SN74LS645DW

Description：IC TXRX NON-INVERT 5.25V 20SOIC
Series：74LS
Mfr：Texas Instruments
Package：Tube

SKU:b51d4ec036a2 Category: Buffers, Drivers, Receivers, Transceivers Brand: Texas Instruments

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Product introduction

SN74LS645DW is listed in the Buffers, Drivers, Receivers, Transceivers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC TXRX NON-INVERT 5.25V 20SOIC. Review the specifications below when checking this part for your BOM.

Buffers, Drivers, Receivers, Transceivers specifications for SN74LS645DW

Description：IC TXRX NON-INVERT 5.25V 20SOIC
Series：74LS
Mfr：Texas Instruments
Package：Tube
Logic Type：Transceiver, Non-Inverting
Number of Elements：1
Number of Bits per Element：8
Input Type：-
Output Type：3-State
Current - Output High, Low：15mA, 24mA
Voltage - Supply：4.75V ~ 5.25V
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：20-SOIC (0.295", 7.50mm Width)
Supplier Device Package：20-SOIC
Grade：-
Qualification：-

Buffers, Drivers, Receivers, Transceivers datasheet and documents for SN74LS645DW

SN74LS645DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS645DW is an octal bus transceiver with three-state outputs manufactured by Texas Instruments. It belongs to the SN74LS logic family and operates within a supply voltage range of 4.75 V to 5.25 V. The device features a propagation delay of 15 ns and supports low-level output currents up to 48 mA, while high-level output current reaches -15 mA. Designed for surface-mount applications, it utilizes a 20-pin SOIC package and functions reliably across an operating temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

Provides bidirectional data transfer between two buses using eight non-inverting channels
Features three-state outputs that isolate the device when disabled
Accepts TTL input levels while driving compatible TTL output loads

Buffers, Drivers, Receivers, Transceivers Applications

Memory mapping in computer systems
Signal buffering for I/O circuits
Control bus management in instrumentation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact package type and production status. Ensure compatibility with standard SOIC-20 footprints during PCB layout. Confirm RoHS compliance and lead finish specifications match your assembly requirements before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal data transfer with TTL-compatible interfaces. Verify that the required drive current aligns with the specified low-level and high-level output capabilities. Consider the operating temperature range and power supply constraints to ensure reliable performance within the target application environment.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the SN74LS64x series of octal bus transceivers. It shares functional similarities with other members of the family but differs in output configuration. The SN74LS645 specifically provides three-state outputs, distinguishing it from open-collector variants like the SN74LS642.