74F807 - Philips

74F807 Octal shift/count registered transceiver

The 74F807 is a registered transceiver that also has the capability to perform count, shift, and add functions. It is also has the capability to generate a parity bit output. All of this is done within a 28–pin package. The MR input is an overriding asynchronous reset which forces the STATOUT output low as well as the A and B busses. The A and B busses have .

Features

• High speed parallel registers with this device only on the output states. Both OE pins are enabled low. All operating modes, other than clear, 3
  –State, and the two hold modes require the rising edge of the clock. All setup and hold times must be observed for proper functioning. Data on the internal register can be switched on either the A or B ports for output. Depeding on the state of the select inputs (S0, S1, S2), and carry in/ serial in/ clock enable (CI/SI/CE), the 74F807 has nine distinct operating modes: 1. Add mode w/carry in
  – the CI/SI/CE input is used as a carry in signal and the.