Part Number : SN74AHC245
Function : OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
Maker : Texas Instruments
– One Assembly/Test Site, One Fabrication
Extended Temperature Performance of
–55°C to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
Enhanced Product-Change Notification
Operating Range 2-V to 5.5-V VCC
Latch-Up Performance Exceeds 250 mA Per
ESD Protection Exceeds 1000 V Per
MIL-STD-833, Method 3015; Exceeds 100 V
Using Machine Model (C = 200 pF, R = 0)
The SN74AHC245 octal bus transceiver is designed for asynchronous two-way communication between data
buses. The control-function implementation minimizes external timing requirements.
This device allows 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 effectively are isolated.
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.
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