SN75451BDE4 Equivalent & Substitute Parts

Part Overview

The SN75451BDE4 is a peripheral driver logic IC manufactured by Texas Instruments, designed for 5.25V operation with 2 elements and 2 bits per element in open collector output configuration. This component is packaged in 8-SOIC surface mount format. The SN75451BDE4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Logic
Logic Type	Peripheral Driver
Number of Elements	2
Number of Bits per Element	2
Output Type	Open Collector
Current - Output High, Low	-, 300mA
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN75451BDE4 is determined by strict equivalence across the following critical parameters:

Logic Type: Peripheral Driver
Number of Elements: 2
Number of Bits per Element: 2
Output Type: Open Collector
Current - Output High, Low: -, 300mA
Voltage - Supply: 4.75V ~ 5.25V
Operating Temperature: 0°C ~ 70°C (TA)
Package / Case: 8-SOIC (0.154", 3.90mm Width)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed maintain identical electrical and mechanical specifications across these parameters. Substitutes are grouped by product status: manufacturer-recommended active parts and parametric equivalents currently in active production.

Parameter Comparison

Part Number	Manufacturer	Product Status	Logic Type	Elements	Bits per Element	Output Type	Current Output Low	Supply Voltage	Operating Temp	Package	RoHS Status	Inventory
SN75451BDE4	Texas Instruments	Discontinued	Peripheral Driver	2	2	Open Collector	300mA	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant	1124 Pcs
SN75451BD	Texas Instruments	Active	Peripheral Driver	2	2	Open Collector	300mA	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant	2200 Pcs
SN75452BD	Texas Instruments	Active	Peripheral Driver	2	2	Open Collector	300mA	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant	2080 Pcs
SN75453BD	Texas Instruments	Active	Peripheral Driver	2	2	Open Collector	300mA	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant	2200 Pcs
SN75454BD	Texas Instruments	Active	Peripheral Driver	2	2	Open Collector	300mA	4.75V ~ 5.25V	0°C ~ 70°C	8-SOIC	ROHS3 Compliant	2144 Pcs

Engineering Selection Recommendations

For applications currently using the discontinued SN75451BDE4, the SN75451BD is the manufacturer-recommended substitute. This part maintains active product status with Texas Instruments and carries identical electrical and mechanical specifications. All substitute parts listed—SN75451BD, SN75452BD, SN75453BD, and SN75454BD—are currently in active production and maintain ROHS3 compliance and MSL Level 1 certification.

Selection among the parametric equivalents should be based on inventory availability and supply chain requirements, as all parts satisfy identical functional and compliance criteria for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can SN75452BD, SN75453BD, and SN75454BD be used interchangeably with SN75451BDE4?

A: Yes. All substitute parts maintain identical electrical specifications (peripheral driver logic type, 2 elements, 2 bits per element, open collector output, 300mA output current, 4.75V–5.25V supply voltage, 0°C–70°C operating temperature), mechanical packaging (8-SOIC), and compliance certifications (ROHS3, MSL Level 1).

Q: What is the difference between the SN75451BDE4 and SN75451BD?

A: The primary difference is packaging designation. The SN75451BDE4 is discontinued, while SN75451BD is the active equivalent from Texas Instruments. Both share identical electrical and mechanical specifications and are functionally interchangeable.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts are supplied in 8-SOIC (0.154", 3.90mm Width) surface mount packaging, maintaining identical PCB footprint compatibility.

Q: Do substitute parts meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original SN75451BDE4 specifications.

Q: Which substitute should be selected for new designs?

A: The SN75451BD is the manufacturer-recommended choice for new designs, as it maintains active product status with Texas Instruments and carries the same base product number as the discontinued SN75451BDE4.

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