SN74AHC4066DGVR Equivalent & Substitute Parts

Part Overview

The SN74AHC4066DGVR is a 4-circuit SPST-NO analog switch IC manufactured by Texas Instruments, designed for signal routing and switching applications in interface circuits. This device features 75Ohm on-state resistance and operates across a 2V to 5.5V single supply voltage range. The part is classified as Last Time Buy, indicating discontinued production. Identifying equivalent and substitute parts is essential for design continuity, inventory management, and long-term product support.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74AHC4066DGVR
Manufacturer	Texas Instruments
Category	Interface
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	75Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm
Voltage - Supply, Single (V+)	2V ~ 5.5V
Switch Time (Ton, Toff) (Max)	12ns, 12ns
-3dB Bandwidth	50MHz
Channel Capacitance (CS(off), CD(off))	0.5pF, 5.5pF
Current - Leakage (IS(off)) (Max)	100nA
Crosstalk	-45dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	14-TFSOP (0.173", 4.40mm Width)
Supplier Device Package	14-TVSOP
Base Product Number	74AHC4066
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution of the SN74AHC4066DGVR is determined by strict equivalence across the following critical parameters:

Switch circuit topology: SPST - NO (Single Pole Single Throw - Normally Open)
Number of circuits: 4
Multiplexer/Demultiplexer configuration: 1:1
On-state resistance: 75Ohm maximum
Channel-to-channel matching: 2Ohm maximum
Supply voltage range: 2V ~ 5.5V
Switch timing: 12ns maximum for both Ton and Toff
Bandwidth: 50MHz minimum (-3dB)
Leakage current: 100nA maximum
Operating temperature range: -40°C ~ 85°C
Mounting type: Surface Mount
RoHS and REACH compliance status

Substitute parts are grouped into two categories: MFR Recommended (same electrical specifications with different packaging) and Parametric Equivalent (identical electrical performance with alternative package options).

Parameter Comparison

Parameter	SN74AHC4066DGVR (Main)	SN74AHC4066PWR (MFR Recommended)	SN74LV4066ADGVR (Parametric Equivalent)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Switch Circuit	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	4	4	4
Multiplexer/Demultiplexer	1:1	1:1	1:1
On-State Resistance (Max)	75Ohm	75Ohm	75Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm	2Ohm	2Ohm
Voltage - Supply, Single (V+)	2V ~ 5.5V	2V ~ 5.5V	2V ~ 5.5V
Switch Time (Ton, Toff) (Max)	12ns, 12ns	12ns, 12ns	12ns, 12ns
-3dB Bandwidth	50MHz	50MHz	50MHz
Channel Capacitance (CS(off), CD(off))	0.5pF, 5.5pF	0.5pF, 5.5pF	0.5pF, 5.5pF
Current - Leakage (IS(off)) (Max)	100nA	100nA	100nA
Crosstalk	-45dB @ 1MHz	-45dB @ 1MHz	-45dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-TFSOP	14-TSSOP	14-TFSOP
Supplier Device Package	14-TVSOP	14-TSSOP	14-TVSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Last Time Buy	Last Time Buy	Last Time Buy

Engineering Selection Recommendations

All three parts listed—SN74AHC4066DGVR, SN74AHC4066PWR, and SN74LV4066ADGVR—maintain identical electrical specifications and are ROHS3 compliant with REACH Unaffected status. Selection between these parts is determined by packaging and inventory availability rather than functional performance.

SN74AHC4066PWR is the MFR Recommended substitute, offering the same electrical performance in a 14-TSSOP package format with higher current inventory (5601 Pcs) compared to the main part (5021 Pcs). This option is suitable for designs where the TSSOP package footprint is compatible with existing PCB layouts.

SN74LV4066ADGVR is the Parametric Equivalent, maintaining the original 14-TFSOP package format with 2690 Pcs in stock. This option provides direct package compatibility for existing designs without PCB modification.

All parts share Last Time Buy status, indicating production discontinuation. Long-term availability should be confirmed with the manufacturer or authorized distributors.

Frequently Asked Questions (FAQ)

Q: Can SN74AHC4066PWR be used as a direct replacement for SN74AHC4066DGVR?

A: Yes. Both parts are electrically identical with all critical parameters matching: 75Ohm on-state resistance, 2V to 5.5V supply voltage, 12ns switching time, 50MHz bandwidth, and 100nA maximum leakage current. The primary difference is packaging: SN74AHC4066PWR uses 14-TSSOP format while SN74AHC4066DGVR uses 14-TFSOP format. PCB layout compatibility must be verified before substitution.

Q: What is the difference between SN74AHC4066DGVR and SN74LV4066ADGVR?

A: Both parts maintain identical electrical specifications and the same 14-TFSOP package format. The base product numbers differ (74AHC4066 versus 74LV4066), but all measured parameters—resistance, voltage range, timing, bandwidth, and leakage—are equivalent. Selection depends on inventory availability and design requirements.

Q: Are these parts suitable for high-frequency signal routing applications?

A: Yes. All three parts support 50MHz bandwidth with -45dB crosstalk at 1MHz, making them suitable for signal routing in interface circuits within this frequency range. Channel capacitance values (0.5pF off-state, 5.5pF off-state) and 12ns switching time support high-speed switching applications.

Q: What packaging considerations apply when substituting between these parts?

A: SN74AHC4066DGVR and SN74LV4066ADGVR both use 14-TFSOP (0.173", 4.40mm width) and are directly interchangeable at the PCB level. SN74AHC4066PWR uses 14-TSSOP format with the same width but different pin configuration. PCB footprint verification is required before substituting SN74AHC4066PWR into designs originally specified for TFSOP packages.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. All three parts are ROHS3 compliant and REACH Unaffected, meeting environmental and regulatory requirements for industrial and commercial applications.

Q: What is the significance of Last Time Buy status for these parts?

A: Last Time Buy indicates that production has been discontinued. Current inventory levels are the final available stock. For long-term product support and future production runs, alternative parts or design modifications may be necessary. Inventory status should be confirmed with authorized distributors.

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