CD74HCT393M Binary Counter IC Equivalent & Substitute Parts

Part Overview

The CD74HCT393M is a dual 4-bit binary counter logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component functions as a negative edge-triggered counter with asynchronous reset capability, operating at a maximum count rate of 27 MHz within a 4.5 V to 5.5 V supply voltage range. The part is currently discontinued at DiGi Electronics, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Logic Type	Binary Counter
Number of Elements	2
Number of Bits per Element	4
Direction	Up
Trigger Type	Negative Edge
Reset	Asynchronous
Count Rate	27 MHz
Voltage - Supply	4.5 V ~ 5.5 V
Operating Temperature	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74HCT393M is determined by strict equivalence across the following critical parameters:

Logic Function: Binary counter with 2 elements, 4 bits per element, up-counting direction
Trigger Characteristic: Negative edge-triggered operation
Reset Type: Asynchronous reset capability
Electrical Specifications: Supply voltage range 4.5 V to 5.5 V, operating temperature range compatibility
Package Compatibility: 14-SOIC surface mount package with identical pin configuration
Compliance Standards: ROHS3 compliance, MSL Level 1

Substitute parts must maintain identical functional behavior and pin-level compatibility. Variations in packaging format (tube versus tape & reel) and product status (discontinued versus active) do not affect electrical or functional substitutability.

Parameter Comparison

Parameter	CD74HCT393M (Main)	CD74HCT393M96 (Substitute)	74HCT393D,653 (Substitute)
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.
Logic Type	Binary Counter	Binary Counter	Binary Counter
Number of Elements	2	2	2
Number of Bits per Element	4	4	4
Direction	Up	Up	Up
Trigger Type	Negative Edge	Negative Edge	Negative Edge
Reset	Asynchronous	Asynchronous	Asynchronous
Count Rate	27 MHz	27 MHz	107 MHz
Voltage - Supply	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

CD74HCT393M96 is the direct equivalent substitute from Texas Instruments. This part maintains identical electrical specifications, temperature range, and count rate performance while offering active product status and improved supply availability. The packaging format difference (tape & reel versus tube) does not affect functional compatibility.

74HCT393D,653 from Nexperia USA Inc. is a functionally compatible alternative that meets all core substitution criteria. This part offers a higher maximum count rate of 107 MHz, providing performance margin beyond the original specification. The operating temperature range is narrower (-40°C to 125°C versus -55°C to 125°C), which may be a consideration for applications requiring extended low-temperature operation below -40°C. Both parts maintain ROHS3 compliance and MSL Level 1 rating.

For applications with no low-temperature operation below -40°C, either substitute provides equivalent functionality. For designs requiring the full -55°C to 125°C temperature range, CD74HCT393M96 is the preferred selection.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT393M96 be used as a direct replacement for CD74HCT393M?

A: Yes. CD74HCT393M96 is electrically and functionally identical to CD74HCT393M. The only difference is packaging format (tape & reel versus tube). Both parts share the same pin configuration, electrical specifications, and performance characteristics.

Q: What is the difference between CD74HCT393M96 and 74HCT393D,653?

A: Both are functionally compatible substitutes. CD74HCT393M96 maintains identical specifications to the original part, including the -55°C to 125°C operating temperature range. The 74HCT393D,653 offers a higher count rate (107 MHz versus 27 MHz) but operates only to -40°C minimum temperature. Select based on your application's temperature requirements.

Q: Does packaging format affect substitutability?

A: No. Tube and tape & reel packaging formats contain identical die and electrical performance. The packaging difference affects only handling, storage, and automated assembly compatibility. Electrical and functional substitutability is unaffected.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. CD74HCT393M96 and 74HCT393D,653 are both ROHS3 compliant with MSL Level 1 rating, matching the original part's compliance status.

Q: Can I use 74HCT393D,653 in applications requiring -55°C operation?

A: No. The 74HCT393D,653 is rated only to -40°C minimum. For applications requiring operation below -40°C, use CD74HCT393M96, which maintains the full -55°C to 125°C range.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message