54190
SGS-THOMSON
4 BIT SYNCHRONOUS UP/DOWN COUNTERSM54/M74HC190 M54/M74HC191
4 BIT SYNCHRONOUS UP/DOWN COUNTERS
. HIGH SPEED fMAX = 48 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS
54190
Motorola Semiconductors
PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERSPRESETTABLE BCD/DECADE UP/DOWN COUNTERS
PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS
The SN54 / 74LS190 is a synchronous UP/ DOWN BCD Decade (8421) Counter and the SN54/ 74LS191 is a synchronous UP / DOWN Modulo-16 Binary Counter. State changes of the counters ar
54190
National Semiconductor
Synchronous Decade Up/Down CountersMM54HC190 MM74HC190 MM54HC191 MM74HC191
January 1988
MM54HC190 MM74HC190 Synchronous
Decade Up Down Counters with Mode
Control MM54HC191 MM74HC191
Synchronous Binary Up Down Counters
with Mode Control
General Description
These high speed synchronous co