SN74F161ADR

同步4位二进制计数器 SYNCHRONOUS 4-BIT BINARY COUNTER

**description**

This synchronous, presettable, 4-bit binary counter has internal carry look-ahead circuitry for use in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable ENP, ENT inputs and internal gating

**Internal Look-Ahead Circuitry for Fast ****Counting**

**Carry Output for N-Bit Cascading**

**Fully Synchronous Operation for Counting**