74ABT08DB,112 Equivalent & Substitute Parts

Part Overview

The 74ABT08DB,112 is a 4-channel 2-input AND gate logic IC manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The 74ABT series provides advanced bipolar technology with low propagation delay suitable for high-speed logic applications requiring TTL-compatible switching.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	50 µA
Current - Output High, Low	15mA, 20mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	3.4ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ABT08DB,112 is determined by the following critical parameters:

Logic Function: 4-channel 2-input AND gate configuration
Package Type: 14-SSOP surface mount package with identical physical dimensions (0.209", 5.30mm Width)
Supply Voltage Range: 4.5V ~ 5.5V compatibility
Input/Output Logic Levels: TTL-compatible thresholds (Low: 0.8V, High: 2V)
Operating Temperature Range: -40°C ~ 85°C
Compliance Standards: ROHS3 Compliant, REACH Unaffected

Parts meeting these criteria are classified as parametric equivalents or functional substitutes. The SN74ACT08DBR from Texas Instruments meets all functional and package requirements while maintaining electrical compatibility within the specified parameter ranges.

Parameter Comparison

Parameter	74ABT08DB,112 (Nexperia)	SN74ACT08DBR (Texas Instruments)	74ABT08DB,112 (NXP USA Inc.)
Logic Type	AND Gate	AND Gate	AND Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	50 µA	2 µA	50 µA
Current - Output High, Low	15mA, 20mA	24mA, 24mA	15mA, 20mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	3.4ns @ 5V, 50pF	9ns @ 5V, 50pF	3.4ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SSOP (0.209", 5.30mm Width)	14-SSOP (0.209", 5.30mm Width)	14-SSOP (0.209", 5.30mm Width)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Equivalent: The 74ABT08DB,112 from NXP USA Inc. (Tube packaging) is the direct parametric equivalent with identical electrical characteristics and active product status, providing the most straightforward replacement path for obsolete stock.

Functional Substitute: The SN74ACT08DBR from Texas Instruments is a functional substitute meeting all package and logic requirements. This part is in active production status with enhanced availability. The SN74ACT08DBR exhibits lower quiescent current (2 µA vs. 50 µA) and higher output drive capability (24mA vs. 15mA/20mA), with a trade-off of increased propagation delay (9ns vs. 3.4ns). Both parts maintain TTL-compatible logic levels and identical operating temperature ranges. Selection between these options depends on application timing requirements and power consumption constraints within the specified 4.5V ~ 5.5V supply range.

Both substitute options maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT08DBR directly replace the 74ABT08DB,112 in existing designs?

A: Yes, the SN74ACT08DBR is pin-compatible and functionally equivalent within the 14-SSOP package. Both parts share identical logic configuration (4-channel 2-input AND gate), supply voltage range (4.5V ~ 5.5V), and TTL-compatible input/output logic levels. The primary difference is propagation delay (9ns vs. 3.4ns), which must be evaluated against application timing margins.

Q: What is the difference between the two 74ABT08DB,112 listings?

A: Both are identical parts from the 74ABT series with matching electrical specifications. The distinction is packaging format: one is supplied in Tape & Reel (TR) configuration, the other in Tube. Selection depends on production volume and handling requirements.

Q: Are there any compliance or certification differences between these parts?

A: No. All three parts listed maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent regulatory standing.

Q: How do quiescent current differences affect circuit design?

A: The SN74ACT08DBR operates at 2 µA quiescent current compared to 50 µA for the 74ABT series. In low-power or battery-operated applications, this 25-fold reduction may provide significant power savings. For standard AC-powered applications, this difference is typically negligible.

Q: What packaging considerations apply to these substitutes?

A: All parts use identical 14-SSOP surface mount packages (0.209", 5.30mm Width), requiring no PCB layout modifications. Tape & Reel and Tube packaging formats are interchangeable from an electrical and mechanical standpoint; selection is based on production workflow and component handling systems.

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