SN74CBTLV16800 Series

3.3-V, 1:1 (SPST), 20-channel FET bus switch with precharged outputs

Catalog

3.3-V, 1:1 (SPST), 20-channel FET bus switch with precharged outputs

Part	Voltage Supply Source	Supplier Device Package	Type	Package / Case	Package / Case	Package / Case [custom]	Circuit	Circuit	Independent Circuits	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments SN74CBTLV16800GR	Single Supply	48-TSSOP	Bus Switch	48-TFSOP	0.24 in	6.1 mm	10	1:1	2	2.3 V	3.6 V	Surface Mount	85 °C	-40 °C
Texas Instruments SN74CBTLV16800VR	Single Supply		Bus Switch	48-TFSOP	0.173 in 4.4 mm		10	1:1	2	2.3 V	3.6 V	Surface Mount	85 °C	-40 °C

Catalog

3.3-V, 1:1 (SPST), 20-channel FET bus switch with precharged outputs

Key Features

• Member of the Texas Instruments Widebus™ Family5-Switch Connection Between Two PortsRail-to-Rail Switching on Data I/O PortsIoffSupports Partial-Power-Down Mode OperationB-Port Outputs Are Precharged by Bias Voltage to Minimize Signal Distortion During Live InsertionLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)Widebus is a trademark of Texas Instruments.Member of the Texas Instruments Widebus™ Family5-Switch Connection Between Two PortsRail-to-Rail Switching on Data I/O PortsIoffSupports Partial-Power-Down Mode OperationB-Port Outputs Are Precharged by Bias Voltage to Minimize Signal Distortion During Live InsertionLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)Widebus is a trademark of Texas Instruments.

Description

The SN74CBTLV16800 provides 20 bits of high-speed bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device also precharges the B port to a user-selectable bias voltage (BIASV) to minimize live-insertion noise. The device is organized as dual 10-bit bus switches with separate output-enable (OE\) inputs. It can be used as two 10-bit bus switches or one 20-bit bus switch. When OE\ is low, the associated 10-bit bus switch is on, and port A is connected to port B. When OE\ is high, the switch is open, the high-impedance state exists between the two ports, and port B is precharged to BIASV through the equivalent of a 10-kresistor. 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. 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 SN74CBTLV16800 provides 20 bits of high-speed bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device also precharges the B port to a user-selectable bias voltage (BIASV) to minimize live-insertion noise. The device is organized as dual 10-bit bus switches with separate output-enable (OE\) inputs. It can be used as two 10-bit bus switches or one 20-bit bus switch. When OE\ is low, the associated 10-bit bus switch is on, and port A is connected to port B. When OE\ is high, the switch is open, the high-impedance state exists between the two ports, and port B is precharged to BIASV through the equivalent of a 10-kresistor. 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. 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.