Integrated Circuits (ICs)

SN3257QDYYRQ1

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AUTOMOTIVE 5-V, 2:1 (SPDT), 4-CHANNEL SWITCH WITH 1.8-V LOGIC AND POWERED-OFF PROTECTION

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Search across all available documentation for this part.

Documents1.8-V Logic for Multiplexers and Signal Switches (Rev. C)SN3257-Q1 Automotive 5-V, Low Propagation Delay, 2:1 (SPDT),4-Channel Switch With 1.8 V Logic datasheet (Rev. D)+11

Integrated Circuits (ICs)

SN3257QDYYRQ1

Active

Texas Instruments

AUTOMOTIVE 5-V, 2:1 (SPDT), 4-CHANNEL SWITCH WITH 1.8-V LOGIC AND POWERED-OFF PROTECTION

Deep-Dive with AI

Documents1.8-V Logic for Multiplexers and Signal Switches (Rev. C)SN3257-Q1 Automotive 5-V, Low Propagation Delay, 2:1 (SPDT),4-Channel Switch With 1.8 V Logic datasheet (Rev. D)+11

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	SN3257QDYYRQ1

-3db Bandwidth	1.2 GHz
Channel Capacitance (CS(off), CD(off)) [custom]	4 pF
Channel Capacitance (CS(off), CD(off)) [custom]	4 pF
Channel-to-Channel Matching (ΔRon)	70 mOhm
Charge Injection	3.5 pC
Current - Leakage (IS(off)) (Max)	900 nA
Grade	Automotive
Mounting Type	Surface Mount
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	1
On-State Resistance (Max) [Max]	5 Ohms
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Qualification	AEC-Q100
Supplier Device Package	16-SOT-23-THIN
Switch Circuit	SPDT
Switch Time (Ton, Toff) (Max) [custom]	35 µs
Switch Time (Ton, Toff) (Max) [custom]	95 ns
Voltage - Supply, Single (V+) [Max]	5.5 V
Voltage - Supply, Single (V+) [Min]	1.5 V

SN3257-Q1 Series

Automotive 5-V, 2:1 (SPDT), 4-channel switch with 1.8-V logic and powered-off protection

Part	Switch Circuit	Switch Time (Ton, Toff) (Max) [custom]	Switch Time (Ton, Toff) (Max) [custom]	Voltage - Supply, Single (V+) [Min]	Voltage - Supply, Single (V+) [Max]	Qualification	Supplier Device Package	Channel Capacitance (CS(off), CD(off)) [custom]	Channel Capacitance (CS(off), CD(off)) [custom]	Mounting Type	On-State Resistance (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	-3db Bandwidth	Number of Circuits	Charge Injection	Grade	Channel-to-Channel Matching (ΔRon)	Current - Leakage (IS(off)) (Max)	Multiplexer/Demultiplexer Circuit
Texas Instruments SN3257QDYYRQ1	SPDT	35 µs	95 ns	1.5 V	5.5 V	AEC-Q100	16-SOT-23-THIN	4 pF	4 pF	Surface Mount	5 Ohms	-40 °C	125 °C	1.2 GHz	1	3.5 pC	Automotive	70 mOhm	900 nA	2:1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.91
		10	$ 0.82
		25	$ 0.78
		100	$ 0.64
		250	$ 0.60
		500	$ 0.53
		1000	$ 0.42
	Digi-Reel®	1	$ 0.91
		10	$ 0.82
		25	$ 0.78
		100	$ 0.64
		250	$ 0.60
		500	$ 0.53
		1000	$ 0.42
	Tape & Reel (TR)	3000	$ 0.39
		6000	$ 0.37
		15000	$ 0.35
Texas Instruments	LARGE T&R	1	$ 0.48
		100	$ 0.37
		250	$ 0.27
		1000	$ 0.20

Description

General part information

SN3257-Q1 Series

The SN3257-Q1 is an automotive grade complementary metal-oxide semiconductor (CMOS) switch that supports high speed signals with low propagation delay. The SN3257-Q1 offers a 2:1 (SPDT) switch configuration with 4-channels making it ideal for multi-lane protocols such as SPI and I2S. The device supports bidirectional analog and digital signals on the source (SxA, SxB) and drain (Dx) pins and can pass signals above supply up to VDDx 2, with a maximum input and output voltage of 5.5 V.

The SN3257-Q1 has an active lowENpin that is used to enable and disable all channels simultaneously. When theENpin is LOW, one of the two switch paths is selected based on the state of SEL pin.

Powered-off protection up to 3.6 V on the signal path of the SN3257-Q1 provides isolation when the supply voltage is removed (VDD= 0 V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.