Integrated Circuits (ICs)

SN74CBT3345DW

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Texas Instruments

5-V, 1:1 (SPST), 8-CHANNEL FET BUS SWITCH

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Search across all available documentation for this part.

DocumentsSN74CBT3345 datasheet (Rev. I)

Integrated Circuits (ICs)

SN74CBT3345DW

Active

Texas Instruments

5-V, 1:1 (SPST), 8-CHANNEL FET BUS SWITCH

Deep-Dive with AI

DocumentsSN74CBT3345 datasheet (Rev. I)

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	SN74CBT3345DW

Circuit [custom]	8
Circuit [custom]	1:1
Independent Circuits	1
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	20-SOIC
Package / Case [y]	0.295 in
Package / Case [y]	7.5 mm
Supplier Device Package	20-SOIC
Type	Bus Switch
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V
Voltage Supply Source	Single Supply

SN74CBT3345C Series

5-V, 1:1 (SPST), 8-channel bus switch with –2-V undershoot protection

Part	Supplier Device Package	Voltage Supply Source	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Package / Case [y]	Package / Case	Package / Case [x]	Voltage - Supply [Min]	Voltage - Supply [Max]	Type	Independent Circuits	Circuit [custom]	Circuit [custom]	Package / Case [y]
Texas Instruments SN74CBT3345CPW	20-TSSOP	Single Supply	85 °C	-40 °C	Surface Mount	4.4 mm	20-TSSOP	0.173 in	4.5 V	5.5 V	Bus Switch	1	8	1:1
Texas Instruments SN74CBT3345CPWR	20-TSSOP	Single Supply	85 °C	-40 °C	Surface Mount	4.4 mm	20-TSSOP	0.173 in	4.5 V	5.5 V	Bus Switch	1	8	1:1
Texas Instruments SN74CBT3345CRGYR	20-VQFN (3.5x4.5)	Single Supply	85 °C	-40 °C	Surface Mount		20-VFQFN Exposed Pad		4.5 V	5.5 V	Bus Switch	1	8	1:1
Texas Instruments SN74CBT3345DW	20-SOIC	Single Supply	85 °C	-40 °C	Surface Mount	0.295 in	20-SOIC		4.5 V	5.5 V	Bus Switch	1	8	1:1	7.5 mm
Texas Instruments SN74CBT3345DGVR	20-TVSOP	Single Supply	85 °C	-40 °C	Surface Mount	0.173 in	20-TFSOP		4.5 V	5.5 V	Bus Switch	1	8	1:1	4.4 mm
Texas Instruments SN74CBT3345CDW	20-SOIC	Single Supply	85 °C	-40 °C	Surface Mount	0.295 in	20-SOIC		4.5 V	5.5 V	Bus Switch	1	8	1:1	7.5 mm
Texas Instruments SN74CBT3345DBLE
Texas Instruments SN74CBT3345DBR	20-SSOP	Single Supply	85 °C	-40 °C	Surface Mount		20-SSOP		4.5 V	5.5 V	Bus Switch	1	8	1:1
Texas Instruments SN74CBT3345DWR	20-SOIC	Single Supply	85 °C	-40 °C	Surface Mount	0.295 in	20-SOIC		4.5 V	5.5 V	Bus Switch	1	8	1:1	7.5 mm
Texas Instruments SN74CBT3345CDGVR	20-TVSOP	Single Supply	85 °C	-40 °C	Surface Mount	0.173 in	20-TFSOP		4.5 V	5.5 V	Bus Switch	1	8	1:1	4.4 mm

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	$ 1.39
		10	$ 1.24
		25	$ 1.18
		100	$ 0.97
		250	$ 0.90
		500	$ 0.80
		1000	$ 0.63
		2500	$ 0.59
		5000	$ 0.56
Texas Instruments	TUBE	1	$ 1.14
		100	$ 0.88
		250	$ 0.65
		1000	$ 0.46

Description

General part information

SN74CBT3345C Series

The SN74CBT3345C is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT3345C 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 SN74CBT3345C is organized as an 8-bit bus switch with two output-enable (OE, OE\) inputs. When OE is high or OE\ is low, the bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is low and OE\ is high, the bus switch is OFF and the 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.

Documents

Technical documentation and resources

SN74CBT3345 datasheet (Rev. I)

Data sheet