Part Number : SN74ABT640
Function : OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
Package : DIP, SOIC, TSSOP 20 Pin Type
Maker : Texas Instruments
Pinouts : 
Description :
The SN74ABT640 bus transceivers are designed for asynchronous communication between data
buses. These devices transmit inverted data from the A bus to the B bus or from the B bus to the
A bus, depending on the 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.
To ensure the high-impedance state during power up or power down, OEshould be tied to VCC
through a pullup resistor; the minimum value of the resistor is determined by the current-sinking
capability of the driver.
Features
1. State-of-the-Art EPIC-ΙΙB BiCMOS Design
2. Significantly Reduces Power Dissipation
3. ESD Protection Exceeds 2000 V Per
4. MIL-STD-883, Method 3015; Exceeds 200 V
5. Using Machine Model (C = 200 pF, R = 0)
6. Latch-Up Performance Exceeds 500 mA Per
7. Typical Volp(Output Ground Bounce) < 1 V at VCC= 5 V, TA= 25°C
8. High-Drive Outputs (–32-mA IOH,64-mA IOL)
Official Homepage : https://www.ti.com/product/SN74ABT640
Datasheet PDF Download : 
Others datasheet of same file :
74ABT640, SN74ABT640DBLE, SN74ABT640DBR,
SN74ABT640DBRE4, SN74ABT640DBRG4, 74640, SN74640
