2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State OutputsThe ?ALVTH162245 devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for 2.5-V or 3.3-V VCC operation, but with the capability to provide a TTL Interface to a 5-V system environment.
These devices CAN be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the Logic level at the direction-control (DIR) input. The output-enable (OE) input CAN be used to disable the device so that the buses are effectively isolated. The A-port outputs, which are designed to source or sink up to 12 mA, include equivalent 30- series resistors to reduce overshoot and undershoot. These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid Logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. When VCC is between 0 and 1.2 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.2 V, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. By Texas Instruments |
Part | Manufacturer | Description | Datasheet | Samples | |
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SN74ALVTH162245VR | Texas Instruments | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs 48-TVSOP -40 to 85 | |||
SN74ALVTH162245GR | Texas Instruments | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs 48-TSSOP -40 to 85 | |||
SN74ALVTH162245DL | Texas Instruments | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs 48-SSOP -40 to 85 | |||
SN74ALVTH162245LR | Texas Instruments | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs 48-SSOP -40 to 85 |
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SN74ALVTH162245 Pb-Free | SN74ALVTH162245 Cross Reference | SN74ALVTH162245 Schematic | SN74ALVTH162245 Distributor |
SN74ALVTH162245 Application Notes | SN74ALVTH162245 RoHS | SN74ALVTH162245 Circuits | SN74ALVTH162245 footprint |