Catalog
16-Bit Bus Transceiver With 3-State Outputs
Key Features
• Member of the Texas Instruments Widebus™FamilyOperates From 1.65 V to 3.6 VMax tpdof 3 ns at 3.3 V±24-mA Output Drive at 3.3 VBus Hold on Data Inputs Eliminates the Need forExternal Pullup or Pulldown ResistorsLatch-Up Performance Exceeds 250 mA PerJESD 17ESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)Member of the Texas Instruments Widebus™FamilyOperates From 1.65 V to 3.6 VMax tpdof 3 ns at 3.3 V±24-mA Output Drive at 3.3 VBus Hold on Data Inputs Eliminates the Need forExternal Pullup or Pulldown ResistorsLatch-Up Performance Exceeds 250 mA PerJESD 17ESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)
Description
AI
This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCCoperation.
The SN74ALVCH16245 device is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic high or low level applied to prevent excess ICCand ICCZ.
To ensure the high-impedance state during power up or power down,OEshould be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCCoperation.
The SN74ALVCH16245 device is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic high or low level applied to prevent excess ICCand ICCZ.
To ensure the high-impedance state during power up or power down,OEshould be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
