參數資料
型號: HD74LV163A
廠商: Hitachi,Ltd.
元件分類: 通用總線功能
英文描述: Synchronous 4-bit Binary Counter (Synchronous Clear)
中文描述: 同步4位二進制計數器(同步清除)
文件頁數: 1/19頁
文件大?。?/td> 77K
代理商: HD74LV163A
HD74LV163A
Synchronous 4-bit Binary Counter (Synchronous Clear)
ADE-205-265B (Z)
3rd Edition
April 2000
Description
The HD74LV163A is 4-bit binary counters. All flip flops are clocked simultaneously on the low to high to
transition (positive edge) of the clock input waceform. These counters may be preset using the load input.
Presetting of all four flip flops is synchronous to the rising edge of clock. When load is held low counting
is disabled and the data on the A, B, C and D inputs is loaded into the counter on the rising edge clock. If
the load input is taken high before the positive edge of clock the count operation will be unaffected.
Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook
computers), and the low-power consumption extends the battery life.
Features
V
CC
= 2.0 V to 5.5 V operation
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
O
(Max.) = 5.5 V (@V
CC
= 0 V)
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25
°
C)
Typical V
OH
undershoot > 2.3 V (@V
CC
= 3.3 V, Ta = 25
°
C)
Output current
±
6 mA (@V
CC
= 3.0 V to 3.6 V),
±
12 mA (@V
CC
= 4.5 V to 5.5 V)
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