SN74AHCT00BQAR

Overview

The SN74AHCT00BQAR is a quadruple 2-input positive-NAND gate from the AHCT logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible CMOS inputs with balanced push-pull outputs capable of ±8 mA drive current at 5 V. The device is housed in a 14-pin WQFN (BQA) package measuring 3.00 mm × 2.50 mm. It supports an operating temperature range of -40 °C to +125 °C, consumes a maximum static supply current of 20 µA, and exhibits propagation delays between 1 ns and 9 ns depending on load capacitance.

Feature Summary

• TTL-compatible CMOS inputs designed for direct interfacing with TTL logic devices
• Balanced CMOS push-pull outputs providing symmetric sourcing and sinking capabilities
• Low power consumption with a maximum quiescent current of 10 µA

Applications

• Enabling or disabling digital signals
• Controlling indicator LEDs
• Translation between communication modules and system controllers

Procurement Notes

Verify that the specific BQA ordering suffix corresponds to the WQFN-14 package variant. Confirm the required operating temperature range aligns with the -40 °C to +125 °C specification. Ensure input pins are terminated to valid logic levels during operation to prevent undefined states. Validate that output capacitive loads remain within recommended limits to maintain signal integrity.

Selection Notes

Select this component when TTL-level compatibility is required alongside low-power CMOS performance. The WQFN package offers a compact footprint suitable for space-constrained designs. Verify that the ±8 mA output drive capability meets the requirements of the connected loads. Consider the thermal resistance characteristics if multiple gates are utilized simultaneously.

Part Context

This device belongs to the SNx4AHCT00 series, which provides quadruple 2-input NAND functionality. The AHCT series bridges the gap between standard CMOS and TTL logic families by incorporating TTL-compatible input thresholds. The BQA suffix specifically identifies the WQFN package option within the broader product line.

Replacement Considerations

SN74AHCT00DBR

FAQ

How should unused inputs be handled?

Unused inputs must not be left floating. They should be terminated to either VCC or GND to ensure proper device operation and prevent excessive power consumption.

What is the function performed by each gate?

Each gate performs the Boolean function Y = A • B in positive logic, implementing a 2-input NAND operation.