HD74HC4520 Description
The HD74HC4518 dual BCD counter and the HD74HC4520 dual binary counter consist of two identical, independent, internally synchronous 4-stage counters. The counter stages are type D flip-flops, with interchangeable Clock and Enable lines for incrementing on either the positive-going or negative-going transition as required when cascading multiple stages. Each counter can be cleared by applying a high level on the...
HD74HC4520 Key Features
- High Speed Operation High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Curr
- 0.5 1.35 1.8
- 0.5 1.5 3.15 4.2
- 1.9 4.4 5.9 4.13 5.63
- Output voltage
- 4.4 4.5
- 5.9 6.0
- Input current Quiescent supply current
- 95 19 16 10
- pF ns Reset clock ns ns ns Enable to Q ns Reset to Q ns Clock to Q Unit MHz Test Conditions