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SN74AS645N on a board, in 3D

SN74AS645N

Texas Instruments

0℃~+70℃ 1 123mA 15mA 4.5V~5.5V 64mA 74AS 8 Bidirectional Tri-State PDIP-20 Buffers, Drivers, Receivers, Transceivers ROHS

Extended
DatasheetJLCPCBLCSCti/SN74AS645N
Category
Buffers, Drivers, Receivers, Transceivers
Package
PDIP-20
Pins
20

Overview

The SN74AS645N is a buffers, Drivers, Receivers, Transceiver made by Texas Instruments in a PDIP-20 package with 20 pins. 0℃~+70℃ 1 123mA 15mA 4.5V~5.5V 64mA 74AS 8 Bidirectional Tri-State PDIP-20 Buffers, Drivers, Receivers, Transceivers ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SN74ALS1640AN, from EasyEDA) and its footprint (Package_DIP:DIP-20_W7.62mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1548283).

Symbol

DIR1A12A23A34A45A56A67A78A89GND10B811B712B613B514B415B316B217B118OE#19VCC20
EasyEDA_Cloud:SN74ALS1640ANFrom EasyEDA

Footprint

1234567891011121314151617181920
Package_DIP:DIP-20_W7.62mmFrom KiCad's library

Parameters

11
Channel Type
Bidirectional
Current - Output High(IOH)
15mA
Current - Output Low(IOL)
64mA
Features
Output enable
Logic Family
74AS
Number of Bits per Element
8
Number of Elements
1
Operating Temperature
0℃~+70℃
Quiescent Current
123mA
Voltage - Supply
4.5V~5.5V
output type
Tri-State

Order codes

1

Pinout

20
The pins of the SN74AS645N
PinNameType
1DIRUnspecified
2A1Unspecified
3A2Unspecified
4A3Unspecified
5A4Unspecified
6A5Unspecified
7A6Unspecified
8A7Unspecified
9A8Unspecified
10GNDUnspecified
11B8Unspecified
12B7Unspecified
13B6Unspecified
14B5Unspecified
15B4Unspecified
16B3Unspecified
17B2Unspecified
18B1Unspecified
19OE#Unspecified
20VCCUnspecified

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Questions

Is there a KiCad symbol and footprint for the SN74AS645N?

Yes. The symbol is EasyEDA_Cloud:SN74ALS1640AN and the footprint Package_DIP:DIP-20_W7.62mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the SN74AS645N?

PDIP-20, with 20 pins. Its footprint is drawn on this page.

Where is the SN74AS645N datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the SN74AS645N?

JLCPCB lists it as part C1548283, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74AS645N?

Parts like it in the library: the 74HC541D by GR, the SN74HC240N(XBLW) by XBLW, the SN74HC244N(XBLW) by XBLW and the 74HC245N by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8