SY100E136
FEATURES s 550MHz count frequency s Extended 100E VEE range of
- 4.2V to
- 5.5V s Look-ahead-carry input and output s Fully synchronous up and down counting s Asynchronous Master Reset s Internal 75KΩ input pull-down resistors s Available in 28-pin PLCC package
PIN NAMES
Pin D0- D5 Q0- Q5 S1, S2 MR CLK COUT, COUT CLOUT CIN CLIN VCCO
Function Preset Data Inputs Differential Data Outputs Mode Control Pins Master Reset Clock Input Carry Out Output (Active LOW) Look-Ahead-Carry Output Carry-In Input (Active LOW) Look-Ahead-Carry Input VCC to Output
DESCRIPTION
The SY10/100E136 are 6-bit synchronous, presettable, cascadable universal counters. These devices generate a look-ahead-carry output and accept a look-ahead-carry input. These two features allow for the cascading of multiple E136s for wider bit width counters that operate at very nearly the same frequency as the stand-alone counter.
The CLOUT output will pulse LOW for one clock cycle one count before the E136 reaches terminal count....
