CD74HCT4316M Equivalent & Substitute Parts

Part Overview

The CD74HCT4316M is a 4-circuit IC switch with SPST-NO configuration manufactured by Texas Instruments. This component operates as a 1:1 multiplexer/demultiplexer with 170Ohm on-state resistance in a 16-SOIC surface mount package. The part is designated as Last Time Buy, indicating end-of-life status. Alternative equivalent parts are necessary to ensure continued design support and long-term supply chain reliability for new production runs and design revisions.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer/Demultiplexer Configuration	1:1
On-State Resistance (Max)	170Ohm
Channel-to-Channel Matching (ΔRon)	5Ohm
Supply Voltage - Single (V+)	4.5V ~ 5.5V
Supply Voltage - Dual (V±)	±1V ~ 5V
Switch Time (Ton, Toff) Max	37ns, 37ns
-3dB Bandwidth	200MHz
Channel Capacitance (CS(off), CD(off))	5pF
Leakage Current (IS(off)) Max	100nA
Operating Temperature	-55°C ~ 125°C
Package Type	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HCT4316M is determined by the following critical parameters: switch circuit type (SPST-NO), number of circuits (4), multiplexer configuration (1:1), on-state resistance tolerance, supply voltage compatibility, switching speed, and package form factor. Parts meeting these core functional requirements are classified as direct equivalents. Variations in on-state resistance, bandwidth, or operating temperature range do not disqualify a part from substitution if the application requirements fall within the substitute's specifications. Package differences (SOIC vs. TSSOP) require PCB layout modification but do not affect electrical functionality.

Parameter Comparison

Parameter	CD74HCT4316M (Main)	CD74HC4316PWR	74HCT4316D,118	NLV74HC4316ADR2G
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.	onsemi
Switch Circuit	SPST - NO	SPST - NO	SPST - NO	1:1 Multiplexer
Number of Circuits	4	4	4	4
On-State Resistance (Max)	170Ohm	170Ohm	135Ohm	90Ohm
Channel-to-Channel Matching (ΔRon)	5Ohm	5Ohm	6Ohm	Not specified
Supply Voltage - Single (V+)	4.5V ~ 5.5V	2V ~ 6V	4.5V ~ 5.5V	2V ~ 6V
Supply Voltage - Dual (V±)	±1V ~ 5V	±1V ~ 5V	±1V ~ 5V	±2V ~ 6V
Switch Time (Ton, Toff) Max	37ns, 37ns	37ns, 37ns	42ns, 34ns	Not specified
-3dB Bandwidth	200MHz	200MHz	160MHz	160MHz
Channel Capacitance (CS(off), CD(off))	5pF	5pF	4.6pF	Not specified
Leakage Current (IS(off)) Max	100nA	100nA	100nA	100nA
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C
Package Type	16-SOIC	16-TSSOP	16-SOIC	16-SOIC
Product Status	Last Time Buy	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

CD74HC4316PWR (Texas Instruments) is the primary recommended substitute. It maintains identical electrical specifications (170Ohm on-state resistance, 37ns switching time, 200MHz bandwidth) and operating temperature range (-55°C ~ 125°C). The extended single supply voltage range (2V ~ 6V vs. 4.5V ~ 5.5V) provides greater design flexibility. The 16-TSSOP package requires PCB layout modification but offers improved thermal performance. Product status is Active, ensuring long-term availability and manufacturing support.

74HCT4316D,118 (Nexperia USA Inc.) is a secondary equivalent suitable for applications where lower on-state resistance (135Ohm) is beneficial. Operating temperature range is reduced to -40°C ~ 125°C. Switching time is asymmetrical (42ns/34ns) and -3dB bandwidth is reduced to 160MHz. Package remains 16-SOIC, minimizing layout changes. Product status is Active.

NLV74HC4316ADR2G (onsemi) is not recommended for new designs. Although it offers the lowest on-state resistance (90Ohm), the part is designated Obsolete. The automotive qualification (AEC-Q100) and extended dual supply range (±2V ~ 6V) are not applicable to standard industrial applications. Supply chain continuity cannot be assured.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4316PWR replace CD74HCT4316M without circuit modification? A: Electrical substitution is direct. The 16-TSSOP package requires PCB footprint redesign compared to the 16-SOIC original. Verify PCB layout space availability before implementation.

Q: What is the impact of lower on-state resistance in 74HCT4316D,118? A: Lower on-state resistance (135Ohm vs. 170Ohm) reduces signal attenuation and power dissipation in switch paths. This is advantageous for low-level signal applications. No circuit modification is required; the part is a direct drop-in replacement in 16-SOIC package.

Q: Why is NLV74HC4316ADR2G not recommended? A: The part is designated Obsolete, indicating discontinued manufacturing. New production orders cannot be guaranteed. Automotive qualification is unnecessary for non-automotive applications and does not offset supply chain risk.

Q: Are there supply voltage compatibility concerns between substitutes? A: CD74HC4316PWR and NLV74HC4316ADR2G support extended supply ranges (2V ~ 6V and ±2V ~ 6V respectively), providing broader compatibility than the original CD74HCT4316M (4.5V ~ 5.5V single supply). Verify application supply voltages fall within the selected substitute's rated range.

Q: What is the significance of the Last Time Buy status for CD74HCT4316M? A: Last Time Buy indicates the manufacturer will discontinue production. Existing inventory is limited. Designs must transition to an active substitute part to ensure long-term production viability and supply chain continuity.

Q: Do package differences affect electrical performance? A: No. SOIC and TSSOP packages are functionally equivalent. Package selection is determined by PCB layout constraints, thermal requirements, and manufacturing capabilities. Electrical specifications remain identical across package variants.

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