Texas Instruments CD74HC237M96G4

Overview

CD74HC237M96G4 from Texas Instruments is a high-speed CMOS 3-to-8 line decoder/demultiplexer with address latches, configured for active-high output selection. It features three binary select inputs (A0–A2), dual output enables (OE0, OE1), latch enable (LE), and operates across 2V–6V supply range. With typical propagation delay of 13ns at VCC = 5V/15pF and –55°C to +125°C temperature range, it serves in memory address decoding and data routing within industrial control and instrumentation systems.

For engineers reviewing the CD74HC237M96G4 datasheet, CD74HC237M96G4 pinout, CD74HC237M96G4 application, or CD74HC237M96G4 equivalent, key selection criteria include its active-high decoded outputs, latch-controlled input isolation, SOIC-16 package compatibility, and HC-series noise immunity (NIL/NIH = 30% of VCC at 5V).

Technical Context

The CD74HC237M96G4 implements a 3-bit address latch followed by an active-high 1-of-8 decoder. Latch Enable (LE) controls transparency: low LE passes A0–A2 directly to the decoder; high LE latches prior inputs, freezing output state independent of subsequent address changes.

Demultiplexing is enabled via OE0/OE1 - one acts as data input while the other remains asserted; selected output Y0–Y7 drives high per the latched address. Unlike the '137 variant, this device asserts outputs high on selection, eliminating external inverters in high-active routing paths.

Key Specifications

Pinout & Package

CD74HC237M96G4 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package, 3.9mm width, RoHS-compliant, with NIPDAU/SN lead finish and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-to-8 decoder/demultiplexer applications.

Compared with CD74HC137M96 and CD74HCT237M96, the CD74HC237M96G4 uniquely combines active-high outputs with wide 2V–6V operation - making it optimal for new designs requiring high-true enables and voltage flexibility without level-shifting overhead.

Availability

CD74HC237M96G4 is available at Aetrix Electronics and suitable for industrial control systems, test equipment, and aerospace subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HC237M96G4 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, with decades of heritage in high-reliability logic families.

The CD74HC237M96G4 belongs to TI's High-Speed CMOS (HC) logic portfolio, engineered for low-power, high-noise-immunity digital interfacing in demanding industrial, automotive, and defense applications.

FAQ

What is the function of the Latch Enable (LE) pin on the CD74HC237M96G4?

The Latch Enable (LE) pin on the CD74HC237M96G4 controls whether the A0–A2 address inputs are transparently passed to the decoder or latched. When LE is low, outputs follow real-time changes on A0–A2; when LE is high, the current address is captured and held, isolating outputs from further input changes until LE goes low again. This behavior is essential for glitch-free memory mapping in systems with asynchronous address updates.

Does the CD74HC237M96G4 support 3.3V operation?

Yes, the CD74HC237M96G4 fully supports 3.3V operation as part of its 2V–6V HC-family supply range. At VCC = 3.3V, it maintains guaranteed logic thresholds (VIH ≥ 2.0V, VIL ≤ 1.0V), 10 LSTTL fanout capability, and typical propagation delay under 20ns - making it ideal for modern low-voltage embedded systems interfacing with 3.3V microcontrollers.

How does the CD74HC237M96G4 differ from the CD74HC137M96 in output polarity?

The CD74HC237M96G4 asserts selected outputs high (Yx = HIGH), whereas the CD74HC137M96 asserts them low (Yx = LOW). Both share identical pinout, timing, supply specs, and latch/demux functionality. The polarity difference dictates whether external inverters are required - CD74HC237M96G4 eliminates them in high-true enable architectures, reducing component count and propagation delay.

Can the CD74HC237M96G4 be used for demultiplexing, and how is it configured?

Yes, the CD74HC237M96G4 supports demultiplexing by using one Output Enable (e.g., OE0) as the data input and the other (OE1) as the active-low enable. With OE1 held low and OE0 toggled, the A0–A2 address selects which of Y0–Y7 receives the OE0 signal - effectively routing one input to eight possible destinations. This configuration requires no additional logic and leverages built-in latch control for synchronized data transfer.

What is the maximum output drive strength of the CD74HC237M96G4?

The CD74HC237M96G4 provides ±25mA DC output drive per pin (sink or source) across the full operating temperature range. This allows direct driving of LEDs, small relays, or multiple LSTTL inputs without external buffers. Its 10-LSTTL fanout rating at temperature extremes confirms robust performance in high-load industrial interfaces.