74HC4051DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC4051DB,112 is a single-circuit 8:1 multiplexer/demultiplexer IC manufactured by Nexperia USA Inc., designed for analog and digital signal switching applications. This component features an on-state resistance of 120Ohm with 6Ohm channel-to-channel matching, operating across a supply voltage range of 2V to 10V (single supply) or ±1.5V to 5V (dual supply). The device is currently classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit Configuration	8:1
Number of Circuits	1
On-State Resistance (Max)	120Ohm
Channel-to-Channel Matching (ΔRon)	6Ohm
Voltage - Supply, Single (V+)	2V ~ 10V
Voltage - Supply, Dual (V±)	±1.5V ~ 5V
Switch Time (Ton, Toff) (Max)	51ns, 42ns
-3dB Bandwidth	180MHz
Channel Capacitance (CS(off), CD(off))	4.6pF
Current - Leakage (IS(off)) (Max)	400nA
Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HC4051DB,112 is determined by strict equivalence across the following critical parameters:

Multiplexer/Demultiplexer circuit configuration (8:1)
Number of circuits (1)
On-state resistance specification (120Ohm maximum)
Channel-to-channel matching tolerance (6Ohm)
Supply voltage ranges (2V ~ 10V single; ±1.5V ~ 5V dual)
Switch timing characteristics (51ns Ton, 42ns Toff maximum)
Bandwidth performance (-3dB at 180MHz)
Leakage current specification (400nA maximum)
Operating temperature range (-40°C ~ 125°C)
Surface mount packaging requirement
RoHS3 compliance and MSL Level 1 rating

The 74HC4051PW,118 meets all these criteria and qualifies as a direct functional equivalent. The primary distinction between these parts is the package type: the main part uses 16-SSOP (0.209", 5.30mm width) while the substitute uses 16-TSSOP (0.173", 4.40mm width). Both packages are surface-mount configurations with identical pin counts and electrical performance.

Parameter Comparison

Parameter	74HC4051DB,112	74HC4051PW,118
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.
Base Product Number	74HC4051	74HC4051
Multiplexer/Demultiplexer Circuit	8:1	8:1
Number of Circuits	1	1
On-State Resistance (Max)	120Ohm	120Ohm
Channel-to-Channel Matching (ΔRon)	6Ohm	6Ohm
Voltage - Supply, Single (V+)	2V ~ 10V	2V ~ 10V
Voltage - Supply, Dual (V±)	±1.5V ~ 5V	±1.5V ~ 5V
Switch Time (Ton, Toff) (Max)	51ns, 42ns	51ns, 42ns
-3dB Bandwidth	180MHz	180MHz
Channel Capacitance (CS(off), CD(off))	4.6pF	4.6pF
Current - Leakage (IS(off)) (Max)	400nA	400nA
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	16-SSOP (0.209", 5.30mm Width)	16-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The 74HC4051PW,118 is the recommended substitute for the obsolete 74HC4051DB,112. Both parts are manufactured by Nexperia USA Inc. and maintain identical electrical specifications across all functional parameters. The substitute part carries Active product status, ensuring continued availability and manufacturing support.

Both components satisfy ROHS3 compliance requirements and maintain REACH Unaffected status, meeting current environmental and regulatory standards. The MSL Level 1 rating for both parts indicates unlimited shelf life under standard storage conditions.

The primary consideration for implementation is the package transition from 16-SSOP to 16-TSSOP. The TSSOP package is narrower (4.40mm versus 5.30mm), which may require PCB layout modifications. Pin configuration and electrical performance remain identical, allowing for direct functional replacement with appropriate footprint adjustment.

Frequently Asked Questions (FAQ)

Q: Can the 74HC4051PW,118 directly replace the 74HC4051DB,112 without circuit modifications?

A: Electrical functionality is identical. However, the package footprint differs: 16-SSOP versus 16-TSSOP. PCB layout must be updated to accommodate the narrower TSSOP package. Pin assignments and electrical characteristics require no circuit changes.

Q: What is the difference between SSOP and TSSOP packaging?

A: Both are surface-mount small-outline packages with 16 pins. The TSSOP (Thin Small-Outline Package) is narrower at 4.40mm compared to SSOP at 5.30mm. Electrical performance and pin spacing are equivalent; only the package width differs.

Q: Why is the 74HC4051DB,112 listed as obsolete?

A: The part has reached end-of-life status. The 74HC4051PW,118 remains in active production and serves as the current equivalent offering from Nexperia USA Inc.

Q: Are there any compliance differences between these parts?

A: No. Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical MSL Level 1 ratings. Regulatory and environmental certifications are equivalent.

Q: What is the inventory status of the substitute part?

A: The 74HC4051PW,118 has 2100 pieces in stock as new original inventory, available in Cut Tape (CT) and Digi-Reel packaging options.

Q: Do the electrical specifications guarantee interchangeability?

A: Yes, for electrical function. All switching characteristics, voltage ranges, timing parameters, and leakage specifications are identical. Physical package differences require PCB redesign only.

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