Texas Instruments SN74AVCH8T245 8-Bit Noninverting Bus Transceivers

Texas Instruments SN74AVCH8T245 8-Bit Noninverting Bus Transceivers use two separate configurable power-supply rails. The A port is designed to track V_CCA, which accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track V_CCB, which also accepts any supply voltage from 1.2V to 3.6V. This allows universal low-voltage bidirectional translation between 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes.

The Texas Instruments SN74AVCH8T245 is designed for asynchronous communication between data buses. Depending on the logic level at the direction-control (DIR) input, the device transmits data from either the A bus to the B bus or from the B bus to the A bus. The output-enable (OE) input can disable the outputs, effectively isolating the buses.

Features

Control inputs (DIR and OE) V_IH and V_IL levels are referenced to V_CCA voltage
Bus hold on data inputs eliminates the need for external pullup or pulldown resistors
V_CC isolation feature
Fully configurable dual-rail design
I/Os are 4.6V tolerant
I_off supports partial-power-down mode operation

Maximum data rates
- 320Mbps (V_CCA ≥ 1.8V and V_CCB ≥ 1.8V)
- 170Mbps (V_CCA ≤ 1.8V or V_CCB ≤ 1.8V)
Latch-up performance exceeds 100mA per JESD 78, class II
ESD protection exceeds JESD 22
- 8000V human-body model (A114-A)
- 200V machine model (A115-A)
- 1000V charged-device model (C101)