Description
PRESETTABLE BCD/DECADE UP/DOWN COUNTERS PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS The SN54 / 74LS190 is a synchronous UP/ DOWN BCD Decade (8421) Count.
The LS190 is a synchronous Up / Down BCD Decade Counter and the LS191 is a synchronous Up / Down 4-Bit Binary Counter.
Features
* ditions
VCC = 5.0 V CL = 15 pF
Test Conditions VCC = 5.0 V
DEFINITIONS OF TERMS
SETUP TIME (ts) is defined as the minimu
Applications
* Low Power . . . 90 mW Typical Dissipation
* High Speed . . . 25 MHz Typical Count Frequency
* Synchronous Counting
* Asynchronous Parallel Load
* Individual Preset Inputs
* Count Enable and Up/ Down Control Inputs
* Cascadable
* Inpu
