74HC112DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC112DB,112 is a dual JK-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., housed in a 16-SSOP package. This component functions as a Set/Preset and Reset element with complementary outputs, operating across a 2V to 6V supply voltage range. The part is classified as Obsolete, making equivalent substitute parts necessary for ongoing design work and production requirements. Substitute parts must maintain functional equivalence through matching logic type, output configuration, electrical performance, and compliance certifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC112DB,112
Manufacturer	Nexperia USA Inc.
Base Product Number	74HC112
Category	Logic
Type	JK Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Negative Edge
Clock Frequency	71 MHz
Max Propagation Delay @ 6V, 50pF	30 ns
Voltage - Supply	2V ~ 6V
Current - Output High, Low	5.2 mA, 5.2 mA
Current - Quiescent (Iq)	4 µA
Input Capacitance	4.6 pF
Operating Temperature	-40°C ~ 125°C
Package / Case	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 74HC112DB,112 are qualified based on the following criteria:

Functional Equivalence: All substitute parts must be JK-type flip-flops with 2 elements, 1 bit per element, complementary outputs, and negative edge triggering.

Electrical Performance: Supply voltage range (2V ~ 6V), output current (5.2 mA high/low), quiescent current (4 µA), and propagation delay (30 ns @ 6V, 50pF) must be maintained or exceeded.

Logic Series: All parts belong to the 74HC logic family, ensuring compatibility with existing 74HC-based designs.

Compliance: RoHS3 compliance and MSL Level 1 certification are required for all substitutes.

Package Compatibility: While the main part uses 16-SSOP packaging, substitute parts in 16-TSSOP packaging are functionally equivalent due to identical pin configurations and electrical characteristics, though physical dimensions differ slightly (4.40mm vs. 5.30mm width).

Parameter Comparison

Parameter	74HC112DB,112 (Nexperia)	CD74HC112PW (TI)	CD74HC112PWR (TI)	CD74HC112PWT (TI)
Type	JK Type	JK Type	JK Type	JK Type
Number of Elements	2	2	2	2
Number of Bits per Element	1	1	1	1
Output Type	Complementary	Complementary	Complementary	Complementary
Trigger Type	Negative Edge	Negative Edge	Negative Edge	Negative Edge
Clock Frequency	71 MHz	60 MHz	60 MHz	60 MHz
Max Propagation Delay @ 6V, 50pF	30 ns	30 ns	30 ns	30 ns
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Output High, Low	5.2 mA, 5.2 mA	5.2 mA, 5.2 mA	5.2 mA, 5.2 mA	5.2 mA, 5.2 mA
Current - Quiescent (Iq)	4 µA	4 µA	4 µA	4 µA
Input Capacitance	4.6 pF	10 pF	10 pF	10 pF
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	16-SSOP (0.209", 5.30mm)	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Discontinued at DiGi Electronics	Active	Discontinued at DiGi Electronics
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

CD74HC112PWR (Texas Instruments) is the primary recommended substitute. This part maintains Active product status, ensuring long-term availability and supply chain stability. It is supplied in Tape & Reel packaging, suitable for automated assembly processes. All electrical parameters match the original specification, and RoHS3 compliance with MSL Level 1 certification is maintained.

CD74HC112PW (Texas Instruments) and CD74HC112PWT (Texas Instruments) are secondary alternatives. Both are functionally equivalent but carry Discontinued at DiGi Electronics status, which may impact future procurement. CD74HC112PW is supplied in Tube packaging, while CD74HC112PWT is supplied in Tape & Reel format.

Package Consideration: All Texas Instruments substitutes use 16-TSSOP packaging instead of the original 16-SSOP. While pin configurations are identical, PCB layout adjustments may be required due to the 0.9mm difference in package width. Verify PCB footprint compatibility before design implementation.

Operating Temperature Range: Texas Instruments substitutes extend the lower operating temperature limit to -55°C compared to the original -40°C specification. This provides enhanced performance margin for applications requiring extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can CD74HC112PWR be used as a direct replacement for 74HC112DB,112?

A: CD74HC112PWR is functionally equivalent in logic operation, electrical performance, and compliance certifications. However, the package change from 16-SSOP to 16-TSSOP requires PCB footprint verification. Pin assignments are identical, so schematic-level substitution is valid.

Q: What is the difference between CD74HC112PW, CD74HC112PWR, and CD74HC112PWT?

A: All three parts are identical in electrical specifications and logic function. The differences are packaging format: CD74HC112PW is supplied in Tube, CD74HC112PWR in Tape & Reel (TR), and CD74HC112PWT in Tape & Reel (TR). Product status varies: CD74HC112PWR is Active, while the other two are Discontinued at DiGi Electronics.

Q: Why do the Texas Instruments substitutes have higher input capacitance (10 pF vs. 4.6 pF)?

A: Input capacitance differences between manufacturers do not affect functional compatibility. Both values are within acceptable ranges for 74HC logic family operation. This parameter does not impact substitution validity.

Q: Are there any temperature range limitations when substituting?

A: The original part operates from -40°C to 125°C. Texas Instruments substitutes extend to -55°C to 125°C, providing a wider operating range. If your application requires only -40°C to 125°C operation, both specifications are compatible.

Q: What should I verify before implementing a package change from SSOP to TSSOP?

A: Verify PCB footprint compatibility, solder pad spacing, and trace routing clearances. The 16-TSSOP package is narrower (4.40mm vs. 5.30mm width), which may affect board layout. Consult PCB design guidelines for both package types to ensure manufacturability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (CD74HC112PW, CD74HC112PWR, CD74HC112PWT) are RoHS3 compliant with MSL Level 1 certification, matching the original part's compliance status.

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