Texas Instruments SN74HC7001DR

Overview

SN74HC7001DR from Texas Instruments is a quadruple 2-input AND gate IC with Schmitt-trigger inputs, designed for noise-immune digital signal conditioning in industrial control and power management systems. It operates across 2 V to 6 V supply, supports –40°C to +85°C ambient, delivers propagation delay ≤28 ns at 6 V, and provides hysteresis up to 2.5 V for robust input noise rejection.

For engineers reviewing the SN74HC7001DR datasheet, SN74HC7001DR pinout, SN74HC7001DR application, or SN74HC7001DR equivalent, key selection criteria include Schmitt-trigger input thresholds (VT+ = 2.1–4.2 V, VT− = 1.2–3.2 V), output drive capability (±5.2 mA at 6 V), SOIC-14 package compatibility, and fanout support for up to 10 LSTTL loads.

Technical Context

This device implements four independent positive-logic AND gates (Y = A ● B) using balanced CMOS push-pull outputs capable of sourcing and sinking matched currents. Each channel features Schmitt-trigger inputs with programmable hysteresis (ΔVT = 0.5–2.5 V), enabling reliable operation with slow-rising or noisy signals without external filtering.

The SN74HC7001DR integrates clamping diodes on all I/O pins for ESD protection and operates within strict thermal limits (RθJA = 133.6 °C/W for SOIC-14). Its design eliminates input transition rate requirements and allows direct termination of unused inputs to VCC or GND without increased static current draw.

Key Specifications

Pinout & Package

SN74HC7001DR uses a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm with standard JEDEC outline and moisture sensitivity level 1 (260°C reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input AND gate with Schmitt-trigger input applications.

Compared with SN74HC7001DR, SN74HCS7001DR reduces supply current by >90% with identical timing and noise immunity, while CD74HC7001M provides identical performance with alternate manufacturing traceability-both retain full SOIC-14 pin compatibility and Schmitt-trigger functionality.

Availability

SN74HC7001DR is available at Aetrix Electronics and suitable for industrial power sequencing, motor controller reset logic, sensor interface conditioning, and programmable logic glue applications requiring stable component supply and long-term manufacturability.

Supply support for SN74HC7001DR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The SN74HC7001DR belongs to TI's HC logic family, engineered for high-noise environments where Schmitt-trigger inputs and wide supply tolerance are essential for reliable digital signal conditioning in real-world systems.

FAQ

What is the maximum capacitive load the SN74HC7001DR can drive while maintaining specified timing?

The SN74HC7001DR is characterized for optimal performance with ≤70 pF total load capacitance, including probe and PCB trace contributions. Exceeding this value increases propagation delay and transition time; for larger loads, add a series current-limiting resistor to keep output current within ±5.2 mA absolute maximum ratings. The SN74HC7001DR datasheet specifies tpd and tt values only up to 50 pF test conditions.

Can unused inputs on the SN74HC7001DR be left floating?

No, unused inputs on the SN74HC7001DR must be terminated to either VCC or GND to prevent undefined logic states and excessive current draw. Unlike standard CMOS, Schmitt-trigger inputs do not increase static power when held at intermediate voltages-but floating pins cause oscillation and EMI. TI recommends direct connection or 10-kΩ pull-up/down resistors based on required default state.

Does the SN74HC7001DR support 3.3 V operation with guaranteed timing performance?

Yes, the SN74HC7001DR is fully specified for 3.3 V operation: propagation delay is ≤33 ns (max), hysteresis is ≥0.4 V, and output drive is ≥3.98 V VOH at –4 mA. All electrical characteristics in Section 6.4 and 6.5 of the datasheet include 3.3 V (4.5 V nominal column applies to 3.3 V systems per TI's HC family conventions), confirming robust interoperability with 3.3 V microcontrollers and FPGAs.

How does the Schmitt-trigger input architecture improve noise immunity in the SN74HC7001DR?

The SN74HC7001DR uses asymmetric input thresholds (VT+ and VT−) to create hysteresis (ΔVT), meaning a higher voltage is required to switch from LOW to HIGH than to switch back. At 6 V supply, ΔVT reaches 2.5 V, allowing the SN74HC7001DR to reject noise spikes up to ±1.25 V peak-to-peak without false triggering-critical for industrial reset and enable signals exposed to EMI or slow-rising sensor outputs.

Is the SN74HC7001DR pin-compatible with older 74LS7001 or 74F7001 devices?

No, the SN74HC7001DR is not pin-compatible with bipolar 74LS7001 or 74F7001 devices despite identical logic function and SOIC-14 footprint. Those parts use different pinouts (e.g., VCC/GND locations differ), lack Schmitt-trigger inputs, and require separate decoupling strategies due to higher supply current. Always verify pin mapping against TI's SN74HC7001DR functional diagram-not legacy TTL layouts-before PCB reuse.