SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

2-V to 6-V VCC Operation (’HC190, 191) 4.5-V to 5.5-V VCC Operation (’HCT191) Wide Operating Temperature Range of −55°C to 125°C Synchronous Counting and Asynchronous Loading Two Outputs for n-Bit Cascading Look-Ahead Carry for High-Speed Counting Balanced Propagation Delays and Transitio

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

2-V to 6-V VCC Operation (’HC190, 191) 4.5-V to 5.5-V VCC Operation (’HCT191) Wide Operating Temperature Range of −55°C to 125°C Synchronous Counting and Asynchronous Loading Two Outputs for n-Bit Cascading Look-Ahead Carry for High-Speed Counting Balanced Propagation Delays and Transitio

Presettable synchronous BCD decade up/down counter

The 74HC/HCT190 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT190 are asynchronously presettable up/down BCD decade counters. They contain four master/slave flip-flops

Presettable synchronous BCD decade up/down counter

The 74HC/HCT190 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT190 are asynchronously presettable up/down BCD decade counters. They contain four master/slave flip-flops

Presettable synchronous BCD decade up/down counter

The 74HC/HCT190 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT190 are asynchronously presettable up/down BCD decade counters. They contain four master/slave flip-flops

Presettable synchronous BCD decade up/down counter

The 74HC/HCT190 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT190 are asynchronously presettable up/down BCD decade counters. They contain four master/slave flip-flops

Presettable synchronous BCD decade up/down counter

The 74HC/HCT190 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT190 are asynchronously presettable up/down BCD decade counters. They contain four master/slave flip-flops