CD74HC193MT Equivalent & Substitute Parts

Part Overview

The CD74HC193MT is a 4-bit binary up/down counter IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This logic component is designated as Last Time Buy, indicating discontinued production with limited availability. The part operates across a wide supply voltage range (2V to 6V) and temperature range (-55°C to 125°C), making it suitable for legacy and new designs requiring asynchronous reset and synchronous counting operations. Finding equivalent or substitute parts is necessary due to the Last Time Buy status and to ensure long-term design continuity.

Key Parameters

Parameter	Value
Logic Type	Binary Counter
Number of Bits per Element	4
Direction	Up, Down
Reset Type	Asynchronous
Timing	Synchronous
Count Rate	29 MHz
Trigger Type	Positive Edge
Voltage - Supply	2V ~ 6V
Operating Temperature	-55°C ~ 125°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Base Product Number	74HC193

Substitute Part Grouping Explanation

Substitution for the CD74HC193MT is determined by strict equivalence across the following critical parameters:

Logic Type: Binary Counter
Number of Bits per Element: 4
Direction: Up/Down capability
Reset Type: Asynchronous
Timing: Synchronous
Trigger Type: Positive Edge
Voltage Supply Range: 2V ~ 6V minimum
Package / Case: 16-SOIC form factor
Base Product Number: 74HC193 series

Substitute parts must maintain identical functional specifications and package dimensions to ensure direct replacement without circuit redesign. The following parts meet these criteria based on provided specifications.

Parameter Comparison

Parameter	CD74HC193MT (Main)	CD74HC193M96	74HC193D,652	74HC193D,653
Manufacturer	Texas Instruments	Harris Corporation	Nexperia USA Inc.	NXP USA Inc.
Logic Type	Binary Counter	Binary Counter	Binary Counter	Binary Counter
Number of Bits per Element	4	4	4	4
Direction	Up, Down	Up, Down	Up, Down	Up, Down
Reset Type	Asynchronous	Asynchronous	Asynchronous	Asynchronous
Timing	Synchronous	Synchronous	Synchronous	Synchronous
Count Rate	29 MHz	29 MHz	49 MHz	49 MHz
Trigger Type	Positive Edge	Positive Edge	Positive Edge	Positive Edge
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Last Time Buy	Obsolete	Obsolete	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

74HC193D,653 (NXP USA Inc.) is the primary recommended substitute. This part is currently Active in production status, ensuring ongoing availability and supply chain continuity. It maintains full functional equivalence with the CD74HC193MT across all critical parameters, including 4-bit binary counter operation, up/down direction capability, asynchronous reset, and synchronous timing. The part operates within the required 2V to 6V supply range and supports the full 16-SOIC package form factor. While the operating temperature range is narrower (-40°C to 125°C versus -55°C to 125°C), this is acceptable for most applications. The higher count rate of 49 MHz provides additional performance margin.

74HC193D,652 (Nexperia USA Inc.) is a secondary option. This part is Obsolete but maintains ROHS3 compliance and identical functional specifications to 74HC193D,653. The narrower operating temperature range (-40°C to 125°C) applies equally to this variant.

CD74HC193M96 (Harris Corporation) is functionally equivalent but is marked Obsolete and RoHS non-compliant, making it unsuitable for new designs or applications requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can 74HC193D,653 directly replace CD74HC193MT without circuit modification?

A: Yes. Both parts are 4-bit binary up/down counters with identical logic functionality, asynchronous reset, synchronous timing, positive edge triggering, and 16-SOIC package dimensions. Pin-to-pin compatibility is maintained.

Q: What is the difference between the 29 MHz and 49 MHz count rates?

A: The count rate specification indicates the maximum frequency at which the counter can operate. The 49 MHz variants (74HC193D,652 and 74HC193D,653) support higher clock frequencies than the 29 MHz CD74HC193MT. This difference does not affect compatibility; the higher-rated parts will function correctly in applications designed for 29 MHz operation.

Q: Does the narrower operating temperature range of 74HC193D,653 affect compatibility?

A: The 74HC193D,653 operates from -40°C to 125°C, compared to the CD74HC193MT range of -55°C to 125°C. If your application requires operation below -40°C, the CD74HC193MT or CD74HC193M96 would be necessary. For standard industrial and commercial temperature ranges, the narrower specification is not a limiting factor.

Q: Why is 74HC193D,653 recommended over CD74HC193M96?

A: 74HC193D,653 is currently Active in production, ensuring long-term availability and supply security. CD74HC193M96 is Obsolete and RoHS non-compliant, presenting supply risk and regulatory concerns for new designs.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message