器件名称: 74LV163PWDH
功能描述: Presettable synchronous 4-bit binary counter; synchronous reset
文件大小: 142.96KB 共14页
简 介:INTEGRATED CIRCUITS
74LV163 Presettable synchronous 4-bit binary counter; synchronous reset
Product specification Supersedes data of 1997 May 15 IC24 Data Handbook 1998 Apr 30
Philips Semiconductors
Philips Semiconductors
Product specification
Presettable synchronous 4-bit binary counter; synchronous reset
74LV163
FEATURES
Optimized for low voltage applications: 1.0 to 3.6 V Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Synchronous counting and loading Two count enable inputs for n-bit cascading Positive-edge triggered clock Synchronous reset Output capability: standard ICC category: MSI
DESCRIPTION
The 74LV163 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT163. The 74LV163 is a synchronous presettable binary counter which features an internal look-head carry and can be used for high-speed counting. Synchronous operation is provided by having all flip-flops Tamb = 25°C Tamb = 25°C
clocked simultaneously on the positive-going edge of the clock (CP). The outputs (Q0 to Q3) of the counters may be preset to a HIGH or LOW level. A LOW level at the parallel enable input (PE) disables the counting action and causes the data at the data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock (providing that the set-up and hold time requirements for PE are met). Pr……
