SN74AHC138PWR-P

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC138PWR is a 3-line to 8-line decoder/demultiplexer from the Texas Instruments AHC logic family. It operates within a supply voltage range of 2V to 5.5V and supports an operating temperature range of -40°C to 85°C. The device features three enable inputs (one active-high, two active-low) to simplify cascading and data reception. It is housed in a 16-pin TSSOP package with a body size of 5.00mm x 4.40mm. Designed for high-speed memory decoders and data-transmission systems, it incorporates latch-up performance exceeding 250mA per JESD 17.

Signal Switches, Multiplexers, Decoders Feature Summary

• Designed specifically for high-speed memory decoders and data-transmission systems requiring short propagation-delay times.
• Incorporates three enable inputs to simplify cascading and/or data reception without external gates or inverters.
• Provides ESD protection exceeding JESD 22 standards for both Human-Body Model and Charged-Device Model.

Signal Switches, Multiplexers, Decoders Applications

• High-performance memory decoding
• Data-routing applications
• Data-transmission systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-16 package and tape-and-reel carrier configuration as documented in the Package Option Addendum. Confirm that the RoHS status and lead finish match project requirements, noting that the datasheet indicates NIPDAU finishes for this variant. Ensure compatibility with the specified -40°C to 85°C operating temperature range for the intended environment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when system design requires a 3-to-8 line decoding function with low power consumption and high speed. The AHC series offers performance comparable to LS-TTL but with CMOS power advantages. Verify that the 2V to 5.5V supply voltage range aligns with the system's power rails. Consider the TSSOP package dimensions if board space is constrained relative to other available packages like SOIC or VQFN.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SNx4AHC138 family of 3-line to 8-line decoders/demultiplexers manufactured by Texas Instruments. The family includes variants such as SN74AHC138RGYR (VQFN) and SN74AHC138DR (SOIC). The SN74AHC138PWR specifically denotes the commercial grade version in the TSSOP-16 package, distinct from the military-grade SN54AHC138 or automotive-qualified SN74AHC138-Q1.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHC138PW

Signal Switches, Multiplexers, Decoders FAQ

How many enable inputs does the SN74AHC138PWR have?

The device incorporates three enable inputs: one active-high (G1) and two active-low (G2A, G2B).

What is the maximum supply voltage for this decoder?

The recommended operating conditions specify a maximum supply voltage (VCC) of 5.5V.