Texas Instruments CD74HC4075E-NG

Overview

CD74HC4075E-NG from Texas Instruments is a triple 3-input OR gate logic IC in PDIP-14 package, performing Y = A + B + C Boolean function per channel with buffered CMOS inputs, 2 V to 6 V supply range, and operation from –55°C to +125°C. It drives up to 10 LSTTL loads and supports fanout-critical industrial control signal combining.

For engineers reviewing the CD74HC4075E-NG datasheet, CD74HC4075E-NG pinout, CD74HC4075E-NG application, or CD74HC4075E-NG equivalent, key selection criteria include guaranteed wide-temperature operation, buffered input noise immunity, propagation delay under 30 ns at 4.5 V, and compatibility with legacy through-hole PCB layouts requiring PDIP-14 footprint.

Technical Context

This device implements three independent positive-logic OR gates using high-speed silicon-gate CMOS technology. Each gate features balanced push-pull outputs capable of sourcing/sinking ±4 mA at 4.5 V while maintaining VOH ≥ 3.98 V and VOL ≤ 0.33 V.

Input structure includes standard CMOS high-impedance terminals with 10 pF typical input capacitance and ±0.1 µA leakage at 6 V. The design incorporates internal clamp diodes for ESD protection (±1000 V HBM) and supports stable operation under fast input transitions (≤500 ns at 4.5 V).

Key Specifications

Pinout & Package

CD74HC4075E-NG uses a 14-pin Plastic Dual In-line Package (PDIP) with 19.30 mm × 6.40 mm body size, through-hole mounting, and industry-standard pin spacing (0.1 inch). Pin 1 is top-left corner when notch faces upward.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-input OR gate applications.

Compared with SN74HC4075N, CD74HC4075E-NG offers identical performance and sourcing flexibility; versus MC74HC4075N, it provides verified extended temperature capability critical for aerospace and automotive under-hood deployments.

Availability

CD74HC4075E-NG is available at Aetrix Electronics and suitable for industrial fault monitoring, power sequencing control, and legacy system signal aggregation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HC4075E-NG 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 company designing analog and embedded processing chips for industrial, automotive, and communications applications.

CD74HC4075E-NG belongs to the CD74HC high-speed CMOS logic family, engineered for reliable operation in harsh environments with emphasis on wide voltage tolerance, extended temperature support, and robust ESD immunity.

FAQ

What logic function does the CD74HC4075E-NG implement?

The CD74HC4075E-NG implements three independent 3-input OR gates, each performing the Boolean function Y = A + B + C in positive logic. All three gates operate simultaneously and electrically isolate their inputs and outputs. This functionality is confirmed in the device description, functional block diagram, and truth table of the official Texas Instruments datasheet SCHS210H.

What is the operating temperature range for CD74HC4075E-NG?

The CD74HC4075E-NG is rated for operation from –55°C to +125°C, as specified in the Recommended Operating Conditions section of the TI datasheet. This extended temperature range is validated for the PDIP (N) package variant and applies across the full 2 V to 6 V supply range, making it suitable for aerospace, automotive under-hood, and industrial control applications.

Does CD74HC4075E-NG require external pull-up or pull-down resistors on unused inputs?

Yes - unused inputs on the CD74HC4075E-NG must be terminated to either VCC or GND to prevent floating states that cause undefined logic behavior and increased power consumption. The datasheet explicitly states this in Section 9.2.1.2 and Figure 11-1, recommending 10-kΩ resistors for default HIGH or LOW biasing depending on functional intent.

What is the maximum capacitive load the CD74HC4075E-NG can drive while meeting specifications?

The CD74HC4075E-NG is characterized for CL = 50 pF in its switching characteristics table, with propagation delay and transition time guaranteed under that condition. While larger loads (e.g., ≤70 pF) may be driven, the datasheet advises limiting capacitive load to ≤70 pF for optimal performance and recommends adding a series resistor if exceeding the 50 pF test condition to avoid excessive output current.

Is CD74HC4075E-NG RoHS compliant?

Yes, CD74HC4075E-NG is RoHS compliant, as confirmed in the Package Option Addendum of the TI datasheet: "RoHS: Yes" and "Lead finish/NIPDAU". It meets lead-free soldering requirements with NiPdAu terminal finish and has no exemptions applied, supporting environmentally compliant manufacturing processes.