Texas Instruments CD74HC151M96E4

Overview

CD74HC151M96E4 from Texas Instruments is a high-speed CMOS 8-input digital multiplexer with complementary non-inverting (Y) and inverting (W) outputs, three binary select inputs (A/B/C), and active-low enable (G). It operates from 2 V to 6 V, supports -55°C to +125°C temperature range, and delivers propagation delays as low as 14 ns (typical at VCC = 4.5 V, CL = 15 pF), enabling precise signal routing in industrial control logic and data acquisition systems.

For engineers reviewing the CD74HC151M96E4 datasheet, CD74HC151M96E4 pinout, CD74HC151M96E4 application, or CD74HC151M96E4 equivalent, key selection considerations include its dual-output architecture, wide supply voltage tolerance, LSTTL-compatible fanout (10 loads), balanced transition times, and SOIC-16 packaging for space-constrained PCB layouts.

Technical Context

The CD74HC151M96E4 implements a single 8:1 multiplexing function using standard HC-series CMOS logic. Its three select lines (A, B, C) decode one of eight data inputs (D0–D7) to both Y (non-inverting) and W (inverting) outputs under control of the active-low G enable signal. All inputs are buffered, and outputs drive standard LSTTL loads without external pull-ups.

It features rail-to-rail input voltage compatibility (VIH = 1.5 V min at VCC = 2 V; 3.15 V min at 4.5 V), low input leakage (±1 μA max), and dynamic power dissipation governed by CPD = 59 pF - enabling predictable current draw in mixed-signal timing-critical circuits across extended temperature ranges.

Key Specifications

Pinout & Package

CD74HC151M96E4 is housed in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, with standard JEDEC MS-012AC footprint and RoHS-compliant NiPdAu lead finish. Moisture sensitivity level is Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-input multiplexer applications.

Compared with CD74HC151M96E4, SN74HC151DR offers superior ESD resilience for production-line handling, while MC74HC151ADR2G provides second-source assurance with minor packaging process differences - neither is pin-compatible without verifying board-level thermal and reflow profile alignment.

Availability

CD74HC151M96E4 is available at Aetrix Electronics and suitable for industrial control systems, automotive diagnostics modules, automated test equipment, and legacy system upgrades requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HC151M96E4 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 ICs, with decades of heritage in high-reliability logic families including the 74HC series.

The CD74HC151M96E4 belongs to TI's industry-standard 74HC logic portfolio, designed specifically for robust, low-power digital signal routing in industrial automation, aerospace, and test instrumentation where wide temperature operation and predictable timing are essential.

FAQ

What is the maximum operating frequency supported by CD74HC151M96E4?

The CD74HC151M96E4 does not specify a maximum clock frequency, but its propagation delay (tpd) is 14 ns typical at VCC = 4.5 V and CL = 15 pF. This allows reliable operation up to approximately 35 MHz in well-designed circuits with controlled trace impedance and minimal capacitive loading. Real-world throughput depends on select input stability time and enable assertion timing relative to data validity windows.

Does CD74HC151M96E4 support 3.3 V logic systems?

Yes, CD74HC151M96E4 fully supports 3.3 V operation: its recommended VCC range is 2 V to 6 V, and VIH is guaranteed at 1.8 V (min) when VCC = 3.3 V. Input thresholds meet standard CMOS compatibility, allowing direct interfacing with 3.3 V microcontrollers and FPGAs without level shifters.

How do the Y and W outputs behave when the G (enable) pin is high?

When G is high (disabled), both Y and W outputs enter high-impedance (Hi-Z) state - they are effectively disconnected from the internal logic and present no loading to downstream circuitry. This allows multiple CD74HC151M96E4 devices to share a common bus without contention, provided only one G is asserted low at any time.

Can CD74HC151M96E4 be used with 5 V TTL inputs?

No - CD74HC151M96E4 is an HC-type device and is not TTL-input-compatible. For direct connection to 5 V TTL outputs (VOH ≈ 2.4 V), use the pin-compatible CD74HCT151M96 variant instead, which guarantees VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 4.5–5.5 V. Mixing HC and TTL levels risks unreliable logic detection.

What is the purpose of having both Y and W outputs on CD74HC151M96E4?

The complementary Y (non-inverting) and W (inverting) outputs allow CD74HC151M96E4 to perform dual-path logic operations without external inverters - for example, generating even/odd parity bits, implementing XOR/XNOR functions, or driving differential receivers. This reduces component count, layout area, and propagation skew in timing-critical combinatorial logic blocks.