Texas Instruments CD74HC173M96G4

Overview

CD74HC173M96G4 from Texas Instruments is a high-speed CMOS quad D-type flip-flop with three-state outputs, shared clock (CP), master reset (MR), and dual data enable (E1/E2) and output enable (OE1/OE2) controls. It operates from 2 V to 6 V, delivers 15 LSTTL load drive capability, and supports industrial temperature range (–55°C to 125°C). It is used in bus-oriented digital systems for synchronized data latching and controlled bus interfacing.

For engineers reviewing the CD74HC173M96G4 datasheet, CD74HC173M96G4 pinout, CD74HC173M96G4 application, or CD74HC173M96G4 equivalent, key selection criteria include its 16-pin SOIC package, three-state bus-driving capability, propagation delay of 43 ns (max at 6 V), input leakage ≤1 µA, and compatibility with HC logic family voltage thresholds.

Technical Context

The CD74HC173M96G4 integrates four edge-triggered D-type flip-flops sharing CP, MR, E1, E2, OE1, and OE2 control lines. Its synchronous operation on the positive clock edge enables precise data capture across all four channels simultaneously.

Three-state output control is implemented via independent OE1/OE2 pins-either high disables all Q outputs to high-impedance-while internal feedback paths maintain state during data disable (E1/E2 = high). The device uses silicon-gate CMOS technology, delivering low ICC (≤160 µA at 6 V) and high noise immunity (NIL/NIH = 30% of VCC at 5 V).

Key Specifications

Pinout & Package

CD74HC173M96G4 is supplied in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, with standard JEDEC MO-153 footprint and 1.27 mm pitch. Pin 1 is located at the top-left corner adjacent to the index area.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad D-type flip-flop applications.

Compared with CD74HC173M96 and SN74HC173N, CD74HC173M96G4 offers identical core functionality but adds RoHS-compliant NiPdAu lead finish, Level-1 MSL rating for standard reflow, and optimized SOIC packaging for automated SMT lines-making it the preferred choice for volume industrial manufacturing.

Availability

CD74HC173M96G4 is available at Aetrix Electronics and suitable for industrial bus interface, programmable logic control, test equipment data capture, and avionics signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HC173M96G4 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 experience in high-reliability industrial and aerospace components.

CD74HC173M96G4 belongs to TI's CDx4HC173 logic family-designed specifically for robust, low-power, bus-oriented synchronous data latching in extended-temperature industrial and defense systems.

FAQ

What is the supply voltage range for CD74HC173M96G4?

The CD74HC173M96G4 operates from 2 V to 6 V DC. This wide range supports interoperability with both 3.3 V and 5 V logic domains. Operation outside this range risks permanent damage per absolute maximum ratings (–0.5 V to 7 V). At 2 V, propagation delay increases to 250 ns max; at 6 V, it drops to 43 ns max under full temperature range.

Does CD74HC173M96G4 support true three-state outputs?

Yes, CD74HC173M96G4 provides true three-state outputs via two independent active-high output enable pins (OE1 and OE2). Either pin driven high places all Q0–Q3 outputs in high-impedance mode, with leakage ≤±10 µA. This enables safe bus sharing without external pull-ups or direction control logic.

How does the data enable (E1/E2) function differ from output enable (OE1/OE2) in CD74HC173M96G4?

In CD74HC173M96G4, E1/E2 are active-low data enables that control whether D inputs propagate to flip-flop internals-when either is high, Q is fed back to D, freezing state. OE1/OE2 are active-high output controls that disconnect Q outputs from the bus. These functions operate independently: data can be held while outputs remain active, or outputs disabled while internal state updates.

Is CD74HC173M96G4 pin-compatible with CD74HCT173M96?

Yes, CD74HC173M96G4 is pin-compatible with CD74HCT173M96, sharing identical SOIC-16 footprint and pin assignments. However, HCT version uses TTL-compatible input thresholds (VIH = 2 V min, VIL = 0.8 V max) and operates only from 4.5 V to 5.5 V-making it unsuitable for 3.3 V or 2 V systems where CD74HC173M96G4 remains functional.

What is the maximum clock frequency supported by CD74HC173M96G4 at 5 V?

At VCC = 5 V and TA = 25°C, CD74HC173M96G4 supports a maximum clock frequency (fMAX) of 60 MHz. Under full temperature range (–55°C to 125°C), fMAX reduces to 24 MHz (at 4.5 V) and 20 MHz (at 6 V), per recommended operating conditions. Setup time (tSU) is 15 ns min at 5 V, requiring clean, monotonic clock edges.