CD74AC534M96 Equivalent & Substitute Parts

Part Overview

The CD74AC534M96 is an octal D-type flip-flop logic integrated circuit manufactured by Texas Instruments. This device functions as a single-element, 8-bit positive edge-triggered flip-flop with tri-state inverted outputs, housed in a 20-SOIC surface mount package. The component operates across a wide supply voltage range of 1.5V to 5.5V and maintains an active product status within the 74AC logic series. Equivalent and substitute parts are identified to address inventory availability, packaging preferences, or specific application requirements while maintaining functional compatibility within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD74AC534M96
Manufacturer	Texas Instruments
Base Product Number	74AC534
Category	Logic
Type	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Inverted
Trigger Type	Positive Edge
Clock Frequency	125 MHz
Max Propagation Delay @ 5V, 50pF	11.3 ns
Voltage - Supply	1.5V ~ 5.5V
Current - Output High, Low	24 mA, 24 mA
Current - Quiescent (Iq)	8 µA
Input Capacitance	10 pF
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the CD74AC534M96 are identified based on strict compatibility criteria within the 74AC logic series. The primary substitution parameters are:

Mandatory Compatibility Parameters:

Package type: 20-SOIC (0.295", 7.50mm Width)
Logic series: 74AC
Element configuration: 1 element, 8-bit
Trigger mechanism: Positive edge
Mounting type: Surface mount
Output drive capability: 24 mA high and low

Functional Compatibility Considerations: The CD74AC534M96 features tri-state inverted outputs. Substitute parts MC74AC374DWR2G and MC74AC374DWG provide tri-state non-inverted outputs, representing a functional difference in output polarity. The MC74AC377DWR2G provides non-inverted outputs without explicit tri-state designation in the provided data. These substitutes maintain the same package footprint, element count, bit width, and trigger characteristics, enabling direct physical replacement in 20-SOIC socket applications.

Electrical Parameter Variations: Substitute parts operate within different supply voltage ranges (2V ~ 6V versus 1.5V ~ 5.5V) and temperature ranges (-40°C ~ 85°C versus -55°C ~ 125°C). Propagation delays and clock frequencies vary among substitutes, with MC74AC374 variants offering faster performance (9.5 ns at 5V, 50pF; 155 MHz) compared to the CD74AC534M96 (11.3 ns; 125 MHz).

Parameter Comparison

Parameter	CD74AC534M96	MC74AC374DWR2G	MC74AC374DWG	MC74AC377DWR2G
Manufacturer	Texas Instruments	onsemi	onsemi	onsemi
Base Product Number	74AC534	74AC374	74AC374	74AC377
Series	74AC	74AC	74AC	74AC
Type	D-Type	D-Type	D-Type	D-Type
Number of Elements	1	1	1	1
Number of Bits per Element	8	8	8	8
Output Type	Tri-State, Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Non-Inverted
Trigger Type	Positive Edge	Positive Edge	Positive Edge	Positive Edge
Clock Frequency	125 MHz	155 MHz	155 MHz	140 MHz
Max Propagation Delay @ 5V, 50pF	11.3 ns	9.5 ns	9.5 ns	10 ns
Voltage - Supply	1.5V ~ 5.5V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Output High, Low	24 mA, 24 mA	24 mA, 24 mA	24 mA, 24 mA	24 mA, 24 mA
Current - Quiescent (Iq)	8 µA	8 µA	8 µA	8 µA
Input Capacitance	10 pF	4.5 pF	4.5 pF	4.5 pF
Operating Temperature	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain active product status and are manufactured by onsemi, a qualified semiconductor supplier. The MC74AC374DWR2G and MC74AC374DWG variants are RoHS3 compliant and carry MSL 3 (168 Hours) moisture sensitivity ratings. The MC74AC377DWR2G similarly maintains RoHS3 compliance with identical MSL specifications. All substitute parts carry REACH Unaffected status, consistent with the original CD74AC534M96.

Packaging Considerations: MC74AC374DWR2G is supplied in Tape & Reel (TR) packaging with 3699 pieces in stock. MC74AC374DWG is supplied in Tube packaging with 878 pieces in stock. MC74AC377DWR2G is supplied in Tape & Reel (TR) packaging with 1655 pieces in stock. The original CD74AC534M96 is available with 732 pieces in stock.

Output Polarity Differences: The CD74AC534M96 provides inverted outputs, while MC74AC374 variants provide non-inverted outputs. The MC74AC377DWR2G provides non-inverted outputs. Applications requiring inverted logic must account for this functional difference through circuit design modifications or signal inversion stages.

Electrical Performance: Substitute parts offer improved propagation delay characteristics (9.5 ns to 10 ns versus 11.3 ns) and higher clock frequency ratings (140 MHz to 155 MHz versus 125 MHz). However, substitute parts operate within a reduced temperature range (-40°C ~ 85°C versus -55°C ~ 125°C) and narrower low-end supply voltage range (2V minimum versus 1.5V minimum).

Frequently Asked Questions (FAQ)

Q: Can MC74AC374DWR2G directly replace CD74AC534M96 in a 20-SOIC socket?

A: MC74AC374DWR2G shares the identical 20-SOIC (0.295", 7.50mm Width) package footprint and pin count, enabling direct physical socket replacement. However, the output polarity differs: CD74AC534M96 provides inverted outputs while MC74AC374DWR2G provides non-inverted outputs. Circuit-level compatibility depends on whether the application logic accounts for this output inversion difference.

Q: What are the key electrical differences between CD74AC534M96 and MC74AC377DWR2G?

A: Both devices operate as 8-bit positive edge-triggered D-type flip-flops in 20-SOIC packages with identical output drive capability (24 mA). MC74AC377DWR2G offers faster propagation delay (10 ns versus 11.3 ns) and higher clock frequency (140 MHz versus 125 MHz). The CD74AC534M96 supports a wider supply voltage range (1.5V ~ 5.5V versus 2V ~ 6V) and extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C).

Q: Are all substitute parts RoHS compliant?

A: Yes. MC74AC374DWR2G, MC74AC374DWG, and MC74AC377DWR2G are all RoHS3 compliant. All parts carry REACH Unaffected status.

Q: What is the moisture sensitivity level of substitute parts?

A: MC74AC374DWR2G, MC74AC374DWG, and MC74AC377DWR2G all carry MSL 3 (168 Hours) moisture sensitivity ratings. The original CD74AC534M96 has vendor-undefined MSL.

Q: Which substitute part offers the best availability?

A: MC74AC374DWR2G provides the highest inventory level with 3699 pieces in stock, compared to 1655 pieces for MC74AC377DWR2G and 878 pieces for MC74AC374DWG.

Q: Can I use MC74AC374DWG as a substitute if I require Tape & Reel packaging?

A: MC74AC374DWG is supplied in Tube packaging, not Tape & Reel. For Tape & Reel packaging, use MC74AC374DWR2G or MC74AC377DWR2G.

Q: What is the functional difference between MC74AC374 and MC74AC377 variants?

A: Both are 8-bit D-type flip-flops in 20-SOIC packages with identical element configuration and trigger characteristics. MC74AC374 variants provide tri-state non-inverted outputs, while MC74AC377DWR2G provides non-inverted outputs. MC74AC377DWR2G operates at 140 MHz with 10 ns propagation delay, compared to MC74AC374 variants at 155 MHz with 9.5 ns propagation delay.

Q: Does the reduced operating temperature range of substitute parts affect my application?

A: Substitute parts operate from -40°C to 85°C, compared to CD74AC534M96 range of -55°C to 125°C. Applications requiring operation below -40°C or above 85°C must use the original CD74AC534M96 or identify alternative parts with extended temperature specifications.

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