SN74LS640-1N

$2.10

Description：IC TXRX INVERT 5.25V 20DIP
Series：74LS
Mfr：Texas Instruments
Package：Bulk,Tube

SKU:711bf1f474a9 Category: Buffers, Drivers, Receivers, Transceivers Brand: Texas Instruments

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Product introduction

SN74LS640-1N is listed in the Buffers, Drivers, Receivers, Transceivers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC TXRX INVERT 5.25V 20DIP. Review the specifications below when checking this part for your BOM.

Buffers, Drivers, Receivers, Transceivers specifications for SN74LS640-1N

Description：IC TXRX INVERT 5.25V 20DIP
Series：74LS
Mfr：Texas Instruments
Package：Bulk,Tube
Logic Type：Transceiver, Inverting
Number of Elements：1
Number of Bits per Element：8
Input Type：-
Output Type：3-State
Current - Output High, Low：15mA, 48mA
Voltage - Supply：4.75V ~ 5.25V
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Through Hole
Package / Case：20-DIP (0.300", 7.62mm)
Supplier Device Package：20-PDIP
Grade：-
Qualification：-

Buffers, Drivers, Receivers, Transceivers datasheet and documents for SN74LS640-1N

SN74LS640-1N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS640-1N is an octal bus transceiver manufactured by Texas Instruments, belonging to the SN54LS/74LS logic family. It features eight independent bidirectional data channels with three-state outputs and inverting polarity. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. It is housed in a 20-pin PDIP package and is rated for operation from 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

Provides eight independent bidirectional data channels for efficient bus-oriented communication
Features three-state outputs that isolate the device when disconnected from the system bus
Supports inverting polarity for specific signal routing requirements

Buffers, Drivers, Receivers, Transceivers Applications

Memory and memory mapping
Control lines
Bus-oriented circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the active production status and RoHS compliance (Yes) before procurement. Confirm the lead finish is NIPDAU and the operating temperature range matches the application environment. Ensure the 20-pin PDIP tube packaging aligns with assembly requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring high-speed octal data transfer with inverting functionality. Compare against non-inverting variants like the SN74LS645 if polarity requirements differ. Verify compatibility with existing TTL logic families and ensure power supply constraints fit the 4.75 V to 5.25 V specification.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN54LS/74LS series of octal bus transceivers. It shares functional similarities with other members of the SDLS189 datasheet family, such as the SN74LS645, but differs in output polarity. The -1 suffix indicates the inverting configuration distinct from standard non-inverting versions.