SN74AUC245
SN74AUC245 is OCTAL BUS TRANSCEIVER manufactured by Texas Instruments.
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Features
- Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
- Ioff Supports Partial-Power-Down Mode Operation
- Sub-1-V Operable
- Max tpd of 1.7 ns at 1.8 V
- Low Power Consumption, 20-µA Max ICC
- ±8-m A Output Drive at 1.8 V
- Latch-Up Performance Exceeds 100 m A Per
JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
GND B8
SN74AUC245 OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES419A
- JANUARY 2003
- REVISED MARCH 2005
RGY PACKAGE (TOP VIEW)
DIR VCC
A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9
1 10
20 19 OE 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7
DESCRIPTION/ORDERING INFORMATION
This octal bus transceiver is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V VCC operation.
The SN74AUC245 is designed for asynchronous munication between data buses. The device transmits data 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 the buses are effectively isolated.
To ensure the high-impedance state during power up or power down, 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.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered...
