Integrated Circuits (ICs)

SN74CBT3257D

Obsolete

Texas Instruments

5-V, 2:1 (SPDT), 4-CHANNEL GENERAL-PURPOSE ANALOG SWITCH

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Integrated Circuits (ICs)

SN74CBT3257D

Obsolete

Texas Instruments

5-V, 2:1 (SPDT), 4-CHANNEL GENERAL-PURPOSE ANALOG SWITCH

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DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	SN74CBT3257D

Circuit [custom]	4
Circuit [custom]	2:1
Independent Circuits	1
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Type	Multiplexer/Demultiplexer
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V
Voltage Supply Source	Single Supply

SN74CBT3257C Series

5-V, 2:1 (SPDT), 4-channel FET bus switch with –2-V undershoot protection

Part	Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Voltage Supply Source	Supplier Device Package	Package / Case [x]	Package / Case	Package / Case [y]	Circuit [custom]	Circuit [custom]	Independent Circuits	Package / Case	Package / Case	Package / Case [custom]	Package / Case [custom]
Texas Instruments SN74CBT3257CPWRG4	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-TSSOP	0.173 in	16-TSSOP	4.4 mm	4	2:1	1
Texas Instruments SN74CBT3257DBQRE4	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SSOP		16-SSOP		4	2:1	1	0.154 in	3.9 mm
Texas Instruments SN74CBT3257CDRG4	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SOIC	0.154 in	16-SOIC	3.9 mm	4	2:1	1
Texas Instruments SN74CBT3257CD	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SOIC	0.154 in	16-SOIC	3.9 mm	4	2:1	1
Texas Instruments SN74CBT3257RGYRG4	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-VQFN (4x3.5)		16-VFQFN Exposed Pad		4	2:1	1
Texas Instruments SN74CBT3257D	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SOIC	0.154 in	16-SOIC	3.9 mm	4	2:1	1
Texas Instruments SN74CBT3257DBR	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SSOP		16-SSOP		4	2:1	1			0.209 in	5.3 mm
Texas Instruments SN74CBT3257CRGYR	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-VQFN (4x3.5)		16-VFQFN Exposed Pad		4	2:1	1
Texas Instruments SN74CBT3257CDR	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SOIC	0.154 in	16-SOIC	3.9 mm	4	2:1	1
Texas Instruments SN74CBT3257DR	Multiplexer/Demultiplexer	4.5 V	5.5 V	85 °C	-40 °C	Surface Mount	Single Supply	16-SOIC	0.154 in	16-SOIC	3.9 mm	4	2:1	1

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.03
		10	$ 0.92
		40	$ 0.87
		120	$ 0.72
		280	$ 0.67
		520	$ 0.59
		1000	$ 0.47
Texas Instruments	TUBE	1	$ 0.76
		100	$ 0.58
		250	$ 0.43
		1000	$ 0.31

Description

General part information

SN74CBT3257C Series

The SN74CBT3257C is a high-speed TTL-compatible FET multiplexer/demultiplexer with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT3257C provides protection for undershoot up to –2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state.

The SN74CBT3257C is a 4-bit 1-of-2 multiplexer/demultiplexer with a single output-enable (OE\) input. The select (S) input controls the data path of the multiplexer/demultiplexer. When OE\ is low, the multiplexer/demultiplexer is enabled and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE\ is high, the multiplexer/demultiplexer is disabled and a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Iofffeature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

Documents

Technical documentation and resources