74F569

Features:

` Synchronous counting and loading
` Lookahead carry capability for easy cascading
` Preset capability for programmable operation
` 3-STATE outputs for bus organized systems


Pinout




Specifications

Storage Temperature                           -65°C to +150°C
Ambient Temperature under Bias         -55°C to +125°C
Junction Temperature under Bias         -55°C to +175°C
V_CC Pin Potential to Ground Pin                  -0.5V to +7.0V
Input Voltage (Note 3)                                -0.5V to +7.0V
Input Current (Note 3)                         -30 mA to +5.0 mA
Voltage Applied to Output
   in HIGH State (with V_CC = 0V)
   Standard Output                                       -0.5V to VCC
   3-STATE Output                                      -0.5V to +5.5V
Current Applied to Output
   in LOW State (Max)                 twice the rated I_OL (mA)


Description

The 74F569 is a fully synchronous, reversible counter with 3-STATE outputs. The 74F569 is a binary counter, featuring preset capability for programmable operation, carry lookahead for easy cascading, and a U/D input to control the direction of counting. For maximum flexibility there are both synchronous and master asynchronous reset inputs as well as both Clocked Carry (CC) and Terminal Count (TC) outputs. All state of the 74F569 changes except Master Reset are initiated by the rising edge of the clock. A HIGH signal on the Output Enable (OE) input forces the output buffers into the high impedance state but does not revent counting, resetting or parallel loading.