kaufe MAX3232IDG4 | MAX3232IDG4 Datenblatt | Heisener.com
Kontaktieren Sie uns
SalesDept@heisener.com +86-755-83210559-834
Login/Registrieren
BOM
Wagen 0

MAX3232IDG4

hot MAX3232IDG4

MAX3232IDG4

Nur als Referenz

Teilenummer MAX3232IDG4
Hersteller Texas Instruments
Beschreibung IC DRVR/RCVR MULTCH RS232 16SOIC
Datenblatt
Paket 16-SOIC (0.154", 3.90mm Width)
ECAD
Auf Lager 4.800 piece(s)
Stückpreis $ 1,8428 *
Lieferzeit Sofort lieferbar
Geschatte Leveringstijd Mai 26 - Mai 31 (Kies voor snelle verzending)
Angebot anfordern
Zahlungsarten
Lieferservice
  • Wir bieten MAX3232IDG4 zum günstigen Preis auf dem Weltmarkt, senden Sie uns eine Quote Anfrage Preis bitte. Danke!
  • Um Ihren RFQ verarbeiten, fügen Sie bitte MAX3232IDG4 mit Menge in den BOM. Heisener.com erfordert keine Registrierung, um ein Angebot von MAX3232IDG4 fordern.

MAX3232IDG4 Spezifikationen

HerstellerTexas Instruments
RubrikIntegrierte Schaltungen (ICs) - Schnittstelle - Treiber, Empfänger, Transceiver
Paket16-SOIC (0.154", 3.90mm Width)
ECAD
Serie-
ArtTransceiver
ProtokollRS232
Anzahl der Treiber / Empfänger2/2
DuplexFull
Empfängerhysterese300mV
Datenrate250kbps
Spannungsversorgung3 V ~ 5.5 V
Betriebstemperatur-40°C ~ 85°C
BefestigungsartSurface Mount
Paket / Fall16-SOIC (0.154", 3.90mm Width)
Lieferantengerätepaket16-SOIC

MAX3232IDG4 Packaging

Customized Labels
Sealing
Packing
Insepction

MAX3232IDG4 FAQ

  • 1. How to order MAX3232IDG4 on Heisener?
    Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
  • 2. How does Heisener guarantee that MAX3232IDG4 is from the original manufacturer or authorized agents?
    We have a professional and experienced quality control team to strictly verify and test the MAX3232IDG4. All suppliers must pass our qualification reviews before they can publish their products including MAX3232IDG4 on Heisener; we pay more attention to the channels and quality of MAX3232IDG4 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
  • 3. Are the MAX3232IDG4 price and inventory displayed accurate?
    The price and inventory of MAX3232IDG4 fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
  • 4. What forms of payment are accepted?
    Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.
    Warm Tips: Some orders in certain payment forms may require handling fee.
  • 5. How is the shipping arranged?
    Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.
    Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.
    Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
  • 6. What is the process for return or replacement of MAX3232IDG4?
    All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MAX3232IDG4 we delivered, we will accept the replacement or return of the MAX3232IDG4 only when all of the below conditions are fulfilled:
    (1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
    (2)We are informed of the defect described above within 90 days after the delivery of MAX3232IDG4.
    (3)The PartNo is unused and only in the original unpacked packaging.
    Two processes to return the products:
    (1)Inform us within 90 days
    (2)Obtain Requesting Return Authorizations
  • 7.How to contact us to get technical supports, such as MAX3232IDG4 pin diagram, MAX3232IDG4 datasheet?
    If you need any after-sales service, please do not hesitate to contact us.

MAX3232IDG4 Verwandte Produkte

SIT1602BC-21-18E-77.760000E SIT1602BC-21-18E-77.760000E SiTIME, -20 TO 70C, 3225, 20PPM, 1.8V, 7, -, - Aussicht
M39003/09-0132H M39003/09-0132H Vishay Sprague, CAP TANT 150UF 20% 15V AXIAL, Axial, - Aussicht
24FD3765 24FD3765 Cornell Dubilier Electronics (CDE), CAP FILM 65UF 10% 370VAC QC TERM, Radial, Can, - Aussicht
C336C184G2G5TA C336C184G2G5TA KEMET, CAP CER RAD 180NF 200V C0G 2%, -, - Aussicht
U18MD9AQE U18MD9AQE C&K, SWITCH TOGGLE SPDT 5A 120V, -, - Aussicht
RN65D6191FR36 RN65D6191FR36 Vishay Dale, RES 6.19K OHM 1/2W 1% AXIAL, Axial, - Aussicht
0391001008 0391001008 Molex, LLC, CONN TERM STRIP 8CIRC 0.394", -, - Aussicht
DW-03-14-G-S-275 DW-03-14-G-S-275 Samtec Inc., .025" BOARD SPACERS, -, - Aussicht
305-036-500-204 305-036-500-204 EDAC Inc., CONN EDGE DUAL FMALE 36POS 0.156, -, - Aussicht
120957-2 120957-2 TE Connectivity AMP Connectors, CONN PLUG UNIV PWR MOD R/A 7POS, -, - Aussicht
VE-24L-MY-S VE-24L-MY-S Vicor Corporation, CONVERTER MOD DC/DC 28V 50W, Full Brick, - Aussicht
VE-BTW-IY-F4 VE-BTW-IY-F4 Vicor Corporation, CONVERTER MOD DC/DC 5.5V 50W, Full Brick, - Aussicht

MAX3232IDG4 Garantien

Service Guarantee

Servicegarantien

Wir garantieren 100% Kundenzufriedenheit.

Unser erfahrenes Verkaufsteam und unser technisches Support-Team unterstützen unsere Dienstleistungen, um alle unsere Kunden zufriedenzustellen.

Quality Guarantee

Qualitätsgarantien

Wir bieten 90 Tage Garantie.

Wenn die Artikel, die Sie erhalten haben, nicht in perfekter Qualität sind, sind wir für Ihre Rückerstattung oder den Ersatz verantwortlich. Die Artikel müssen jedoch in ihrem ursprünglichen Zustand zurückgesandt werden.

Globale Lieferketten - Zuverlässige und autorisierte Distributorenressourcen

Teilenummer Hersteller Beschreibung Lager

MAX3232ID

D# V99:2348_07298552

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC Tube

RoHS: Compliant
 0

MAX3232IDRG4

D# V36:1790_07298563

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC T/R

RoHS: Compliant
 0

MAX3232IDB

D# V36:1790_07298553

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SSOP Tube

RoHS: Compliant
 0

MAX3232IDW

D# V99:2348_07298564

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC Tube

RoHS: Compliant
 0
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

D# MAX3232ID

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC Tube - Rail/Tube (Alt: MAX3232ID)

RoHS: Compliant
 0
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

 Texas Instruments

643

MAX3232IDB

 Texas Instruments

28

MAX3232IDW

 Texas Instruments

80
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

D# 52S2229

 Texas Instruments

INTERFACE IC MAX3232ID

 1160
Teilenummer Hersteller Beschreibung Lager

MAX3232IDG4

 Texas Instruments

IC DRVR/RCVR MULTCH RS232 16SOIC

 0

MAX3232ID

 Texas Instruments

- Rail/Tube

 13180

MAX3232IDW

 Texas Instruments

IC, TRANSCEIVER, 16WSOIC

 749

MAX3232IDB

 Texas Instruments

LINE DRIV/RCVR, RS232, 250KBPS, SSOP-16

 1026

MAX3232IDRG4

 Texas Instruments

- Tape and Reel

 26785
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

D# C1S746200541083

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC Tube

RoHS: Compliant
pbFree: Yes
Min Qty: 1
Container: Tube
 11
Teilenummer Hersteller Beschreibung Lager

MAX3232IDW

 Texas Instruments

transceiver RS232 2/2 250kbps SOIC-16 RS232 ICs RoHS

 220

MAX3232IDRG4

 Texas Instruments

transceiver RS232 2/2 250kbps SOIC-16 RS232 ICs RoHS

 870

MAX3232IDB

 Texas Instruments

Transceiver RS232 2/2 250kbps SSOP-16_208mil RS232 ICs RoHS

 142
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

 Texas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

RoHS: Compliant
 0
Teilenummer Hersteller Beschreibung Lager

MAX3232IDB

 Texas Instruments

RoHS (ship within 1day) - D/C 2010

 784
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

D# 296-47809-1-ND

 Texas Instruments

IC TRANSCEIVER FULL 2/2 16SOIC

 1893

MAX3232ID

D# 296-26158-5-ND

 Texas Instruments

IC TRANSCEIVER FULL 2/2 16SOIC

 1843

MAX3232IDB

D# 296-33388-5-ND

 Texas Instruments

IC TRANSCEIVER FULL 2/2 16SSOP

 137

MAX3232IDW

D# 296-26159-5-ND

 Texas Instruments

IC TRANSCEIVER FULL 2/2 16SOIC

 419

MAX3232IDG4

D# MAX3232IDG4-ND

 Texas Instruments

IC TRANSCEIVER FULL 2/2 16SOIC

 0
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

D# MAX3232IDRG4

 Maxim Integrated Products

Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct

 1220

MAX3232ID

D# MAX3232ID

 Maxim Integrated Products

Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct

 1763

MAX3232IDW

D# MAX3232IDW

 Maxim Integrated Products

Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct

 3806

MAX3232IDB

D# MAX3232IDB

 Maxim Integrated Products

Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct

 3914
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

 Texas Instruments

In stock shipping within 2days

 135

MAX3232IDRG4

 Texas Instruments

In stock shipping within 2days

 121
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

D# 3006987

 Texas Instruments

RS232 TRANSCEIVER, 250KBPS, SOIC-16

RoHS: Compliant
Min Qty: 1
Container: Cut Tape
 1497

MAX3232ID

D# 3121308

 Texas Instruments

IC, TRANSCEIVER, 16-SOIC

RoHS: Compliant
Min Qty: 1
Container: Each
 0

MAX3232IDB

D# 3121309

 Texas Instruments

IC, RS-232 TRANSCEIVER, 5.5V, SSOP-16

RoHS: Compliant
Min Qty: 1
Container: Each
 0

MAX3232IDW

D# 3006988

 Texas Instruments

IC, TRANSCEIVER, 16WSOIC

RoHS: Compliant
Min Qty: 1
Container: Each
 861
Teilenummer Hersteller Beschreibung Lager

MAX3232IDW

 TEXAS INSTRUMENTS

OEM/CM QUOTES ONLY | NO BROKERS

 1123

MAX3232IDG4

 Texas Instruments

OEM/CM QUOTES ONLY | NO BROKERS

 35

MAX3232IDRG4

 Texas Instruments

OEM/CM QUOTES ONLY | NO BROKERS

 2932

MAX3232ID

 Texas Instruments

OEM/CM QUOTES ONLY | NO BROKERS

 5800

MAX3232IDB

 Texas Instruments

OEM/CM QUOTES ONLY | NO BROKERS

 944
Teilenummer Hersteller Beschreibung Lager

MAX3232IDB

 Texas Instruments

OEM/CM ONLY

 190

MAX3232IDG4

 Texas Instruments

OEM/CM ONLY

 861

MAX3232ID

 Texas Instruments

OEM/CM ONLY

 207

MAX3232IDRG4

 Texas Instruments

OEM/CM ONLY

 529

MAX3232IDW

 Texas Instruments

OEM/CM ONLY

 869
Teilenummer Hersteller Beschreibung Lager

MAX3232IDW

 Texas Instruments

In stock

 80
Teilenummer Hersteller Beschreibung Lager

MAX3232IDW

D# C362436

 Texas Instruments

220

MAX3232IDRG4

D# C354120

 Texas Instruments

870
Teilenummer Hersteller Beschreibung Lager

MAX3232IDG4

 Texas Instruments

in stock - can ship the same day

 30
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

D# 595-MAX3232ID

 Texas Instruments

RS-232 Interface IC 3-5.5V Multichannel Line Drvr/Rcvr

RoHS: Compliant
 1258

MAX3232IDRG4

D# 595-MAX3232IDRG4

 Texas Instruments

RS-232 Interface IC 3-5.5V Multich RS- 232 Line Drvr/Rcvr

RoHS: Compliant
 3795

MAX3232IDB

D# 595-MAX3232IDB

 Texas Instruments

RS-232 Interface IC 3-5.5V Multichannel Line Drvr/Rcvr

RoHS: Compliant
 275

MAX3232IDW

D# 595-MAX3232IDW

 Texas Instruments

RS-232 Interface IC 3-5.5V Multichannel Line Drvr/Rcvr

RoHS: Compliant
 869

MAX3232IDG4

D# 595-MAX3232IDG4

 Texas Instruments

RS-232 Interface IC 3-5.5V Multich RS- 232 Line Drvr/Rcvr

RoHS: Compliant
 8
Teilenummer Hersteller Beschreibung Lager

MAX3232IDB

D# 26AJ7490

 Texas Instruments

IC, RS-232 TRANSCEIVER, 5.5V, SSOP-16, D

RoHS: Compliant
Min Qty: 1
Container: Bulk
 0

MAX3232IDW

D# 75C1008

 Texas Instruments

RS-232 TRANSCEIVER, 5.5V, SOIC-16, Device Type:RS232 Transceiver, IC Interface Type:RS232, No. of Drivers:2Drivers, No. of Receivers:2Receivers, Supply Voltage Min:3V, Supply Voltage Max:5.5V, Driver Case Style:SOIC, Product Range:- RoHS Compliant: Yes

RoHS: Compliant
Min Qty: 320
Container: Bulk
 31

MAX3232ID

D# 33AH4347

 Texas Instruments

IC, TRANSCEIVER, 16-SOIC, Device Type:RS232 Transceiver, IC Interface Type:RS232, No. of Drivers:2Drivers, No. of Receivers:2Receivers, Supply Voltage Min:3V, Supply Voltage Max:5.5V, Driver Case Style:SOIC, No. of Pins:16Pins, RoHS Compliant: Yes

RoHS: Compliant
Min Qty: 1
Container: Bulk
 0

MAX3232IDRG4

D# 53AH7108

 Texas Instruments

RS232 TRANSCEIVER, 250KBPS, SOIC-16, Device Type:RS232 Transceiver, IC Interface Type:RS232, No. of Drivers:2Drivers, No. of Receivers:2Receivers, Supply Voltage Min:3V, Supply Voltage Max:5.5V, Driver Case Style:SOIC, No. of RoHS Compliant: Yes

RoHS: Compliant
Min Qty: 1
Container: Cut Tape
 1497
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

D# NS-MAX3232IDRG4

 Texas Instruments

OEM/CM ONLY

 3320

MAX3232IDW

D# NS-MAX3232IDW

 Texas Instruments

OEM/CM ONLY

 5434

MAX3232IDB

D# NS-MAX3232IDB

 Texas Instruments

OEM/CM ONLY

 3992

MAX3232IDG4

D# NS-MAX3232IDG4

 Texas Instruments

OEM/CM ONLY

 3886

MAX3232ID

D# NS-MAX3232ID

 Texas Instruments

OEM/CM ONLY

 3056
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

 Texas Instruments

DUAL LINE TRANSCEIVER, 16 Pin Plastic SOP

 71

MAX3232IDG4

 Texas Instruments

DUAL LINE TRANSCEIVER, PDSO16

 11

MAX3232IDB

 Texas Instruments

Line Transceiver, 2-Driver, 2-Receiver, 16 Pin, Plastic, SSOP

 627
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

D# MAX3232ID

 Texas Instruments

Inventory R

 22
Teilenummer Hersteller Beschreibung Lager

MAX3232IDW

D# 6608732P

 Texas Instruments

Texas Instruments MAX3232IDW Line Transceiver, 16-Pin SOIC W, TU

Min Qty: 5
Container: Tube
 885

MAX3232ID

D# 0527851

 Texas Instruments

Texas Instruments MAX3232ID Line Transceiver, 16-Pin SOIC, PK

Min Qty: 5
Container: Package
 160
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

 Texas Instruments

MAX3232 3-V to 5.5-V multichannel RS-232 line driver & receiver

RoHS: Compliant
 2

MAX3232IDW

 Texas Instruments

MAX3232 3-V to 5.5-V multichannel RS-232 line driver & receiver

RoHS: Compliant
 3164
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

 Texas Instruments

OEM/CM ONLY

 959

MAX3232IDB

 Texas Instruments

OEM/CM ONLY

 800

MAX3232IDG4

 Texas Instruments

OEM/CM ONLY

 52

MAX3232ID

 Texas Instruments

OEM/CM ONLY

 726

MAX3232IDW

 Texas Instruments

OEM/CM ONLY

 220
Teilenummer Hersteller Beschreibung Lager

MAX3232IDB

 Texas Instruments

45
Teilenummer Hersteller Beschreibung Lager

MAX3232IDB

 Texas Instruments

3- to 5.5-V dual channel 250kbps RS-232 line driver/receiver with +/-15-kV ESD protection

 593

MAX3232IDW

 Texas Instruments

3- to 5.5-V dual channel 250kbps RS-232 line driver/receiver with +/-15-kV ESD protection

 5

MAX3232IDRG4

 Texas Instruments

3- to 5.5-V dual channel 250kbps RS-232 line driver/receiver with +/-15-kV ESD protection

 11

MAX3232ID

 Texas Instruments

3- to 5.5-V dual channel 250kbps RS-232 line driver/receiver with +/-15-kV ESD protection

 6
Teilenummer Hersteller Beschreibung Lager

MAX3232IDB

 Texas Instruments

shipping today

 265

MAX3232ID

 Texas Instruments

shipping today

 16
Teilenummer Hersteller Beschreibung Lager

MAX3232IDW

D# 35133513

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC Tube

RoHS: Compliant
 0

MAX3232ID

D# 47188915

 Texas Instruments

Dual Transmitter/Receiver RS-232 16-Pin SOIC Tube

RoHS: Compliant
 0
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

 Texas Instruments

RFQ

 10919

MAX3232IDB

 Texas Instruments

RFQ

 9617

MAX3232IDG4

 Texas Instruments

RFQ

 11252

MAX3232IDW

 Texas Instruments

RFQ

 12826
Teilenummer Hersteller Beschreibung Lager

MAX3232ID

 Texas Instruments

IC DRVR/RCVR MULTCH RS232 16SOIC

 3000
Teilenummer Hersteller Beschreibung Lager

MAX3232IDRG4

D# 3006987

 Texas Instruments

RS232 TRANSCEIVER, 250KBPS, SOIC-16

RoHS: Compliant
Min Qty: 1
Container: Cut Tape
 1697

MAX3232ID

D# 3121308

 Texas Instruments

IC, TRANSCEIVER, 16-SOIC

RoHS: Compliant
Min Qty: 1
Container: Each
 0

MAX3232IDB

D# 3121309

 Texas Instruments

IC, RS-232 TRANSCEIVER, 5.5V, SSOP-16

RoHS: Compliant
Min Qty: 1
Container: Each
 0

MAX3232IDW

D# 3006988

 Texas Instruments

IC, TRANSCEIVER, 16WSOIC

RoHS: Compliant
Min Qty: 1
Container: Each
 918

Quick Inquiry

MAX3232IDG4

Zertifizierte Qualität

Das Qualitätsversprechen von Heisener hat unsere Prozesse für Beschaffung, Prüfung, Versand und jeden Schritt dazwischen geprägt. Diese Grundlage liegt jeder Komponente zugrunde, die wir verkaufen.

ISO9001:2015, ICAS, IAF, UKAS

Zertifikate anzeigen

Kontaktieren Sie uns

Haben Sie Fragen zu MAX3232IDG4 haben?

MAX3232IDG4 QRCode

Scannen, um diese Seite anzuzeigen

Ausgewählte Produkte

C8051F120-GQR

IC MCU 8BIT 128KB FLASH 100TQFP

LTST-S326KGJRKT

LED GREEN/RED CLEAR 2SMD R/A

1746540-4

CONN SKT SODIMM 200POS R/A SMD

SS14-E3/61T

DIODE SCHOTTKY 40V 1A DO214AC

XC6SLX100-3CSG484I

IC FPGA 338 I/O 484CSBGA

NUP2105LT1G

TVS DIODE 24VWM 44VC SOT23

MIC5365-3.3YC5-TR

IC REG LINEAR 3.3V 150MA SC70-5

MC33074DR2G

IC OPAMP GP 4.5MHZ 14SOIC

L6201

IC MOTOR DRIVER PAR 20SOIC

MBR0540-TP

DIODE SCHOTTKY 40V 500MA SOD123

Mehr anzeigen »

MAX3232IDG4 Tags

  • MAX3232IDG4
  • MAX3232IDG4 PDF
  • MAX3232IDG4 Datenblatt
  • MAX3232IDG4 Spezifikation
  • MAX3232IDG4 Bild
  • Texas Instruments
  • Texas Instruments MAX3232IDG4
  • MAX3232IDG4 kaufen
  • MAX3232IDG4 Preisgestaltung
  • MAX3232IDG4 Verteiler
  • MAX3232IDG4 Lieferant
  • MAX3232IDG4 Großhandel

MAX3232IDG4 ist erhältlich