Part Number : 74ALS651
Function : Octal Bus Transcevier / Register
Package : DIP 24 Pin type
Maker : Philips Electronics
Pinouts : 
Description :
The 74LAS651 and 74ALS652 transceivers/registers consist of bus transceiver circuits with 3-State outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or the internal registers.
Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes High. Output enable (OEAB, OEBA) and select (SAB, SBA) pins are provided for bus management. The 74LAS651-1 and 74ALS652-1 will sink 48mA if the VCCis limited to 5.0V ±0.25V.
Features
• Independent registers for A and B buses
• Multiplexed real-time and stored data
• Choice of non-inverting and inverting data paths
• 3-State outputs
Datasheet PDF Download : 
Others datasheet of same file :
74651, 74ALS651-1, 74ALS651-1D, 74ALS651-1N,74ALS651D