BU4093BF-E2 Equivalent & Substitute Parts

Part Overview

The BU4093BF-E2 is a NAND Gate IC with 4 channels and 2 inputs per channel, featuring Schmitt Trigger functionality in a 14-SOP package. Manufactured by Rohm Semiconductor, this component belongs to the 4000B logic series and is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Features	Schmitt Trigger
Voltage Supply Range	3V ~ 16V
Current - Quiescent (Max)	4 µA
Current - Output High/Low	3mA / 3mA
Input Logic Level - Low	1.5V ~ 4V
Input Logic Level - High	4.6V ~ 11V
Max Propagation Delay	40ns @ 15V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.173", 4.40mm Width)
Series	4000B
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the BU4093BF-E2 is determined by strict adherence to the following electrical and mechanical parameters:

Core Functional Requirements:

Logic Type: NAND Gate
Number of Circuits: 4 channels
Number of Inputs: 2 inputs per channel
Features: Schmitt Trigger functionality

Electrical Compatibility Parameters:

Voltage Supply Range: Must encompass or exceed 3V ~ 16V
Quiescent Current: Maximum 4 µA
Output Current Capability: Minimum 3mA for both high and low states
Input Logic Levels: Must accommodate 1.5V ~ 4V (low) and 4.6V ~ 11V (high)
Propagation Delay: Maximum 40ns @ 15V, 50pF

Mechanical & Packaging Parameters:

Package Type: 14-SOIC form factor
Mounting Type: Surface Mount
Physical Dimensions: Compatible with 14-SOIC footprint

Compliance & Environmental:

RoHS3 Compliance required
Moisture Sensitivity Level: 1 (Unlimited)
Operating Temperature: Minimum -40°C ~ 85°C

Substitute parts are grouped into two categories based on their electrical performance characteristics and product status:

Group A - Direct Electrical Equivalents (Schmitt Trigger NAND Gates with Tighter Specifications): HEC4093BT,112, HEC4093BT,118, and HEF4093BT,653 maintain the original input logic level thresholds (1.5V ~ 4V low, 4.6V ~ 11V high) and feature reduced quiescent current (1 µA). These parts are suitable for applications requiring the exact input threshold specifications of the BU4093BF-E2.

Group B - Extended Electrical Range Substitutes (Schmitt Trigger NAND Gates with Broader Supply Voltage): CD4093BM, CD4093BM96, CD4093BMT, CD4093BQM96G4Q1, CD4093BQM96Q1, MC14093BDG, and MC14093BDR2G support an extended supply voltage range (3V ~ 18V) with modified input logic level thresholds (0.9V ~ 4V low, 3.6V ~ 10.8V high). These parts accommodate broader operating conditions while maintaining core NAND gate functionality with Schmitt Trigger characteristics.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits	Inputs	Voltage Supply	Quiescent Current (Max)	Output Current H/L	Input Low Level	Input High Level	Propagation Delay	Temp Range	Package	Status
BU4093BF-E2	Rohm Semiconductor	NAND Gate	4	2	3V ~ 16V	4 µA	3mA / 3mA	1.5V ~ 4V	4.6V ~ 11V	40ns @ 15V, 50pF	-40°C ~ 85°C	14-SOIC	Not For New Designs
CD4093BM	Harris Corporation	NAND Gate	4	2	3V ~ 18V	4 µA	3.4mA / 3.4mA	0.9V ~ 4V	3.6V ~ 10.8V	130ns @ 15V, 50pF	-55°C ~ 125°C	14-SOIC	Active
CD4093BM96	Texas Instruments	NAND Gate	4	2	3V ~ 18V	4 µA	3.4mA / 3.4mA	0.9V ~ 4V	3.6V ~ 10.8V	130ns @ 15V, 50pF	-55°C ~ 125°C	14-SOIC	Active
CD4093BMT	Texas Instruments	NAND Gate	4	2	3V ~ 18V	4 µA	3.4mA / 3.4mA	0.9V ~ 4V	3.6V ~ 10.8V	130ns @ 15V, 50pF	-55°C ~ 125°C	14-SOIC	Discontinued at DiGi Electronics
CD4093BQM96G4Q1	Texas Instruments	NAND Gate	4	2	3V ~ 18V	4 µA	3.4mA / 3.4mA	0.9V ~ 4V	3.6V ~ 10.8V	130ns @ 15V, 50pF	-40°C ~ 125°C	14-SOIC	Active
CD4093BQM96Q1	Texas Instruments	NAND Gate	4	2	3V ~ 18V	4 µA	3.4mA / 3.4mA	0.9V ~ 4V	3.6V ~ 10.8V	130ns @ 15V, 50pF	-40°C ~ 125°C	14-SOIC	Active
HEC4093BT,112	NXP USA Inc.	NAND Gate	4	2	3V ~ 15V	1 µA	3.4mA / 3.4mA	1.5V ~ 4V	4.6V ~ 11V	60ns @ 15V, 50pF	-40°C ~ 125°C	14-SOIC	Active
HEC4093BT,118	NXP USA Inc.	NAND Gate	4	2	3V ~ 15V	1 µA	3.4mA / 3.4mA	1.5V ~ 4V	4.6V ~ 11V	60ns @ 15V, 50pF	-40°C ~ 125°C	14-SOIC	Active
HEF4093BT,653	Nexperia USA Inc.	NAND Gate	4	2	3V ~ 15V	1 µA	3.4mA / 3.4mA	1.5V ~ 4V	4.6V ~ 11V	60ns @ 15V, 50pF	-40°C ~ 125°C	14-SOIC	Active
MC14093BDG	onsemi	NAND Gate	4	2	3V ~ 18V	1 µA	8.8mA / 8.8mA	0.9V ~ 4V	3.6V ~ 10.8V	80ns @ 15V, 50pF	-55°C ~ 125°C	14-SOIC	Active
MC14093BDR2G	onsemi	NAND Gate	4	2	3V ~ 18V	1 µA	8.8mA / 8.8mA	0.9V ~ 4V	3.6V ~ 10.8V	80ns @ 15V, 50pF	-55°C ~ 125°C	14-SOIC	Active

Engineering Selection Recommendations

For Direct Replacement with Matched Input Thresholds: HEC4093BT,112, HEC4093BT,118, and HEF4093BT,653 are the preferred substitutes when the original input logic level specifications (1.5V ~ 4V low, 4.6V ~ 11V high) must be maintained. These parts are manufactured by NXP USA Inc. and Nexperia USA Inc., both with Active product status and full RoHS3 compliance. HEC4093BT,112 and HEC4093BT,118 offer improved propagation delay (60ns versus 40ns) and reduced quiescent current (1 µA versus 4 µA), providing enhanced performance characteristics. HEF4093BT,653 from Nexperia provides equivalent specifications with high inventory availability (2256 pcs).

For Extended Operating Range Applications: CD4093BQM96G4Q1 and CD4093BQM96Q1 from Texas Instruments are recommended for applications requiring automotive-grade qualification (AEC-Q100) with extended temperature range (-40°C ~ 125°C). Both parts maintain Active product status, full RoHS3 compliance, and support the broader supply voltage range (3V ~ 18V). CD4093BQM96G4Q1 is available in Cut Tape & Digi-Reel packaging, while CD4093BQM96Q1 is supplied in Tape & Reel format.

For High Current Output Applications: MC14093BDR2G and MC14093BDG from onsemi provide significantly higher output current capability (8.8mA versus 3mA), making them suitable for applications requiring greater drive capability. MC14093BDR2G offers the highest inventory availability (105200 pcs) with Active status and full compliance certifications. Both parts support the extended supply voltage range (3V ~ 18V) and wide operating temperature (-55°C ~ 125°C).

For General-Purpose Substitution: CD4093BM96 from Texas Instruments provides a balance of availability (65200 pcs), Active product status, and standard electrical specifications. This part is suitable for applications where the extended supply voltage range (3V ~ 18V) and modified input thresholds (0.9V ~ 4V low, 3.6V ~ 10.8V high) are acceptable.

Frequently Asked Questions (FAQ)

Q: Can I use CD4093BM96 as a direct replacement for BU4093BF-E2?

A: CD4093BM96 is functionally compatible as a NAND gate with 4 channels and Schmitt Trigger features in the same 14-SOIC package. However, the input logic level thresholds differ: CD4093BM96 accepts 0.9V ~ 4V (low) and 3.6V ~ 10.8V (high), while BU4093BF-E2 requires 1.5V ~ 4V (low) and 4.6V ~ 11V (high). If your circuit operates within the CD4093BM96 input threshold range, substitution is valid. If your circuit relies on the specific BU4093BF-E2 thresholds, use HEC4093BT,112, HEC4093BT,118, or HEF4093BT,653 instead.

Q: What is the difference between HEC4093BT,112 and HEF4093BT,653?

A: Both parts are Schmitt Trigger NAND gates with identical electrical specifications and the same 14-SOIC package. HEC4093BT,112 is manufactured by NXP USA Inc., while HEF4093BT,653 is manufactured by Nexperia USA Inc. (formerly part of NXP). Both maintain the original input logic level thresholds (1.5V ~ 4V low, 4.6V ~ 11V high) and are Active products with full RoHS3 compliance. Selection between them depends on supplier availability and procurement preferences.

Q: Why does MC14093BDR2G have higher output current than the original BU4093BF-E2?

A: MC14093BDR2G is specified with 8.8mA output current capability (high and low) compared to 3mA for BU4093BF-E2. This higher drive capability is a characteristic of the onsemi MC14093 series design. If your application requires only 3mA output current, the higher capability does not create a compatibility issue. However, if your circuit design depends on the specific 3mA output impedance characteristics, verify that the higher drive capability does not cause signal integrity problems in your application.

Q: Can I use automotive-grade CD4093BQM96G4Q1 in a non-automotive application?

A: Yes. CD4093BQM96G4Q1 is AEC-Q100 qualified for automotive use, but this qualification does not restrict its use in non-automotive applications. The part meets all standard electrical specifications and RoHS3 compliance requirements. Automotive-grade parts typically undergo more rigorous testing and screening, making them suitable for any application requiring high reliability. Use of automotive-grade components in non-automotive designs is a valid engineering practice.

Q: What is the significance of the propagation delay difference between BU4093BF-E2 (40ns) and CD4093BM96 (130ns)?

A: Propagation delay is the time required for a logic gate output to respond to an input change. BU4093BF-E2 has a faster propagation delay (40ns) compared to CD4093BM96 (130ns). If your circuit operates at frequencies where this timing difference is critical, verify that the slower CD4093BM96 does not violate setup/hold time requirements or introduce unacceptable phase shifts. For most general-purpose logic applications operating at standard digital frequencies, the 90ns difference is not problematic. For high-speed or precision timing applications, use HEC4093BT,112 or HEF4093BT,653, which offer 60ns propagation delay as a compromise.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the environmental compliance profile of the original BU4093BF-E2. All parts carry REACH Unaffected status and are classified under ECCN EAR99 for export control purposes.

Q: What packaging options are available for these substitute parts?

A: All substitute parts are supplied in 14-SOIC surface mount packages with identical footprints. Packaging format variations include Cut Tape (CT) & Digi-Reel, Tape & Reel (TR), and Tube. These packaging differences affect handling and automated assembly processes but do not impact electrical or mechanical compatibility. Select packaging based on your procurement and assembly requirements.

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