SN74CBT3125C Series

5-V, 1:1 (SPST), 4-channel general-purpose FET bus switch with st&ard '125-type pinout

Catalog

5-V, 1:1 (SPST), 4-channel general-purpose FET bus switch with st&ard '125-type pinout

Part	Independent Circuits	Circuit	Voltage - Supply [Min]	Voltage - Supply [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Type	Mounting Type	Package / Case [x]	Package / Case [y]	Package / Case	Voltage Supply Source	Package / Case [custom]	Package / Case [custom]	Supplier Device Package	Package / Case	Package / Case
Texas Instruments SN74CBT3125D	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount	0.154 in	3.9 mm	14-SOIC	Single Supply
Texas Instruments SN74CBT3125CDE4	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount	0.154 in	3.9 mm	14-SOIC	Single Supply
Texas Instruments SN74CBT3125PWG4	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount			14-TSSOP	Single Supply	0.173 "	4.4 mm	14-TSSOP
Texas Instruments SN74CBT3125DR	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount	0.154 in	3.9 mm	14-SOIC	Single Supply
Texas Instruments SN74CBT3125CPWRE4	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount			14-TSSOP	Single Supply	0.173 "	4.4 mm	14-TSSOP
Texas Instruments SN74CBT3125DGVR	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount	0.173 in 4.4 mm		14-TFSOP	Single Supply
Texas Instruments SN74CBT3125CDGVR	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount	0.173 in 4.4 mm		14-TFSOP	Single Supply
Texas Instruments SN74CBT3125CDBR	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount			14-SSOP	Single Supply			14-SSOP	5.3 mm	0.209 "
Texas Instruments SN74CBT3125CDBQR	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount			16-SSOP	Single Supply			16-SSOP	3.9 mm	0.154 in
Texas Instruments SN74CBT3125CPWR	4	1 x 1:1	4.5 V	5.5 V	85 °C	-40 °C	Bus Switch	Surface Mount			14-TSSOP	Single Supply	0.173 "	4.4 mm	14-TSSOP

Catalog

5-V, 1:1 (SPST), 4-channel general-purpose FET bus switch with st&ard '125-type pinout

Key Features

• Undershoot Protection for Off-Isolation on A and B Ports Up To –2 VBidirectional Data Flow, With Near-Zero Propagation DelayLow On-State Resistance (ron) Characteristics(ron= 3Typical)Low Input/Output Capacitance Minimizes Loading and Signal Distortion(Cio(OFF)= 5 pF Typical)Data and Control Inputs Provide Undershoot Clamp DiodesLow Power Consumption(ICC= 3 µA Max)VCCOperating Range From 4 V to 5.5 VData I/Os Support 0 to 5-V Signaling Levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS OutputsIoffSupports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Performance Tested Per JESD 222000-V Human-Body Model (A114-B, Class II)1000-V Charged-Device Model (C101)Supports Both Digital and Analog Applications: USB Interface, Bus Isolation, Low-Distortion Signal GatingUndershoot Protection for Off-Isolation on A and B Ports Up To –2 VBidirectional Data Flow, With Near-Zero Propagation DelayLow On-State Resistance (ron) Characteristics(ron= 3Typical)Low Input/Output Capacitance Minimizes Loading and Signal Distortion(Cio(OFF)= 5 pF Typical)Data and Control Inputs Provide Undershoot Clamp DiodesLow Power Consumption(ICC= 3 µA Max)VCCOperating Range From 4 V to 5.5 VData I/Os Support 0 to 5-V Signaling Levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS OutputsIoffSupports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Performance Tested Per JESD 222000-V Human-Body Model (A114-B, Class II)1000-V Charged-Device Model (C101)Supports Both Digital and Analog Applications: USB Interface, Bus Isolation, Low-Distortion Signal Gating

Description

The SN74CBT3125C 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 SN74CBT3125C 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 SN74CBT3125C is organized as four 1-bit bus switches with separate output-enable (1OE\, 2OE\, 3OE\, 4OE\) inputs. It can be used as four 1-bit bus switches or as one 4-bit bus switch. When OE\ is low, the associated 1-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE\ is high, the associated 1-bit 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. To ensure the high-impedance state during power up or power down, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN74CBT3125C 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 SN74CBT3125C 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 SN74CBT3125C is organized as four 1-bit bus switches with separate output-enable (1OE\, 2OE\, 3OE\, 4OE\) inputs. It can be used as four 1-bit bus switches or as one 4-bit bus switch. When OE\ is low, the associated 1-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE\ is high, the associated 1-bit 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. To ensure the high-impedance state during power up or power down, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.