SN74AHC05PWR

Overview

The SN74AHC05PWR is a hex inverter from the Texas Instruments AHC logic family, housed in a 14-pin TSSOP package. It operates within a supply voltage range of 2 V to 5.5 V and supports an operating temperature range of -40°C to +85°C. The device features six independent inverters with open-drain outputs that require external pull-up resistors for proper operation. Electrical characteristics include low-level output currents up to 8 mA at 5 V and propagation delays ranging from 1 ns to 12 ns depending on load capacitance and supply voltage.

Feature Summary

• Contains six independent inverters performing Boolean inversion functions
• Features open-drain outputs capable of implementing wired-OR or wired-AND configurations
• Provides high ESD protection exceeding specified JESD standards for human-body, machine, and charged-device models
• Includes latch-up performance exceeding 250 mA per JESD 17 requirements

Applications

• Signal inversion in digital logic circuits
• Active-low wired-OR logic implementation
• Active-high wired-AND logic implementation
• Bus interface signal conditioning

Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the tape-and-reel packaging format rather than tube packaging. Confirm the active production status through official Texas Instruments channels, as datasheet addendums indicate potential lifecycle changes for certain variants. Ensure compatibility with standard surface-mount assembly processes for the TSSOP-14 footprint.

Selection Notes

Select this component when open-drain output topology is required for wired logic applications. The AHC series offers improved speed and lower power consumption compared to legacy HC families. Verify that the system design includes appropriate pull-up resistors, as the internal circuitry does not provide them. Check input voltage thresholds against the target supply voltage to ensure valid logic level recognition.

Part Context

This part belongs to the SN74AHC05 family of hex inverters with open-drain outputs. It shares functional similarities with other AHC logic devices but is distinct due to its specific output configuration. The 'PWR' suffix denotes the TSSOP package variant supplied in tape-and-reel format, differentiating it from tube-packaged versions like the SN74AHC05PW.

Replacement Considerations

SN74AHC05PW (Tube version)

FAQ

Why are external components necessary for this device?

The open-drain outputs lack internal pull-up transistors. External pull-up resistors are mandatory to establish a high logic state and enable correct switching functionality.

How does the open-drain output affect wiring capabilities?

Multiple open-drain outputs can be connected to a single common line. This allows the implementation of active-low wired-OR or active-high wired-AND logic functions without additional gates.