SCES584B JUNE 2005 – November 2014 SN74LVC8T245
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74LVC8T245 is optimized to operate with VCCA and VCCB set at 1.65 V to 5.5 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes.
The SN74LVC8T245 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 ICC and ICCZ.
The SN74LVC8T245 is designed so that the control pins (DIR and OE) are supplied by VCCA.
|PART NUMBER||PACKAGE||BODY SIZE (NOM)|
|SN74LVC8T245||SSOP (24)||8.20 mm x 5.30 mm|
|SSOP (24)||8.65 mm x 3.90 mm|
|TSSOP (24)||7.80 mm x 4.40 mm|
|TVSOP (24)||5.00 mm x 4.40 mm|
|VQFN (24)||5.50 mm x 3.50 mm|