74LVQ161 - STMicroelectronics

74LVQ161 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER

The 74LVQ161 is a low voltage CMOS SYNCHRONOUS PRESETTABLE COUNTER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power and low noise 3.3V applications. It is a 4 bit binary counter with Asynchronous Clear. The circuit have four fundamental modes of operation, in order of preference: synchronous Fi.

Features

es of operation, in order of preference: synchronous Figure 1: Pin Connection And IEC Logic Symbols reset, parallel load, count-up and hold. Four control inputs, Master Reset (CLEAR), Parallel Enable Input (PE) and Count Enable Carry Input (TE), determine the mode of operation as shown in the Truth Table. A LOW signal on CLEAR overrides counting and parallel loading and sets all outputs on LOW state. A LOW signal on LOAD overrides counting and allows information on Parallel Data Qn inputs to be loaded into the flip-flops on the next rising edge of CLOCK. With LOAD and CLEAR, PE and TE permit .