Texas Instruments CD74HC237M96

Overview

CD74HC237M96 from Texas Instruments is a high-speed CMOS 3-to-8 line decoder/demultiplexer with address latches, featuring active-high outputs, dual output enables (OE0/OE1), and latch enable (LE) for input isolation. It operates from 2V to 6V, delivers 13ns typical propagation delay at 5V/15pF, and supports industrial temperature range (–55°C to +125°C) - used in memory address decoding and data routing in embedded control systems.

For engineers reviewing the CD74HC237M96 datasheet, CD74HC237M96 pinout, CD74HC237M96 application, or CD74HC237M96 equivalent, this page provides verified functional identity, SOIC-16 package mapping, truth-table–confirmed active-high decoding behavior, latch-controlled transparency mode, and validated alternatives for legacy logic upgrades and space-constrained PCB designs.

Technical Context

The CD74HC237M96 implements a 3-bit binary address latch followed by an active-high 1-of-8 decoder. Its LE input controls whether A0–A2 are latched (LE = high) or transparent (LE = low), enabling synchronous address capture. Two independent output enables (OE0, OE1) support cascading and demultiplexing - one enable serves as data input while the other remains asserted.

Unlike the CD74HC137 (active-low outputs), the CD74HC237M96 asserts the selected Y_n output high while holding all others low. Its HC logic family ensures CMOS-level noise immunity (NIL/NIH = 30% of V_CC at 5V), low quiescent current (≤160 µA over full temp range), and compatibility with both LSTTL loads (10 units) and bus drivers (15 units).

Key Specifications

Pinout & Package

CD74HC237M96 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012, 3.9mm body width, 1.75mm height, 1.27mm lead pitch. Pin 1 is marked by a beveled corner or dot; device orientation follows standard SOIC top-view convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD74HC137M96, the CD74HC237M96 eliminates need for output inversion in high-active systems; compared with SN74HC237N, it offers smaller PCB area, better thermal performance in dense layouts, and compatibility with automated SMT assembly.

Availability

CD74HC237M96 is available at Aetrix Electronics and suitable for memory decoding, peripheral selection, sensor multiplexing, and LED display enable applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD74HC237M96 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 over 50 years of innovation in high-reliability logic families.

The CD74HC237M96 belongs to TI's High-Speed CMOS (HC) logic portfolio, designed for low-power, high-noise-immunity digital interfacing in industrial, automotive, and aerospace systems where robustness and wide voltage operation are essential.

FAQ

What is the key functional difference between CD74HC237M96 and CD74HC137M96?

The CD74HC237M96 provides active-high decoded outputs (Y_n = high when selected), whereas CD74HC137M96 provides active-low outputs (Y_n = low when selected). Both share identical pinout, SOIC-16 packaging, latch enable (LE), and dual output enables (OE0/OE1), but their truth tables and output polarity are inverted - making them non-interchangeable without circuit modification. The CD74HC237M96 is optimized for direct driving of high-active loads like LEDs or enable pins.

Does CD74HC237M96 support 3.3V operation, and what are the guaranteed timing specs at that voltage?

Yes, CD74HC237M96 supports 3.3V operation within its specified 2V–6V supply range. At V_CC = 3.3V and T_A = 25°C, propagation delay (A_n to Y_n) is guaranteed ≤45 ns (max) for C_L = 50pF, and ≤60 ns (max) over –55°C to +125°C. Input thresholds scale with V_CC: VIH ≥ 2.0V (min), VIL ≤ 1.0V (max), ensuring reliable interfacing with 3.3V microcontrollers and FPGAs.

Can CD74HC237M96 be used as a demultiplexer, and how is the data input configured?

Yes, CD74HC237M96 can operate as a 1-to-8 demultiplexer. To do so, hold one output enable (e.g., OE0) low to activate the decoder, use the other (OE1) as the data input, and apply the 3-bit address to A0–A2. When OE1 = high, the selected Y_n goes high; when OE1 = low, it stays low - effectively routing the OE1 logic level to the addressed output. This configuration requires no external components and is fully supported by the device's truth table.

What is the maximum fanout capability of CD74HC237M96 into standard LSTTL loads?

CD74HC237M96 guarantees fanout of 10 LSTTL loads over its full operating temperature range (–55°C to +125°C). This is defined as driving ten 74LS-series inputs (each drawing 0.4 mA high, 8 mA low) while maintaining VOH ≥ 3.98 V and VOL ≤ 0.26 V at V_CC = 4.5V. For bus-driver–class loads (e.g., 74ACT), fanout increases to 15 units - verified per manufacturer characterization in the SCHS146F datasheet.

Is CD74HC237M96 RoHS compliant, and what is its moisture sensitivity level (MSL)?

Yes, CD74HC237M96 is RoHS compliant (lead-free, Pb-free) with NiPdAu (NIPDAU) or Sn (SN) lead finish. Its moisture sensitivity level is MSL Level-1, rated for unlimited floor life at ≤30°C/85% RH, with peak reflow temperature of 260°C - permitting standard SMT reflow profiles without baking preconditioning. This is confirmed in TI's Package Option Addendum for orderable part CD74HC237M96.