參數(shù)資料
型號: MC74HC163
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: Presettable Counters
中文描述: 可預置計數(shù)器
文件頁數(shù): 9/16頁
文件大?。?/td> 144K
代理商: MC74HC163
M
h
9
P0
P1
P2
P3
ENABLE P
ENABLE T
RESET
T0
R
C
C
LOAD
LOAD
P0
Q0
Q0
Q1
Q2
Q3
RIPPLE
CARRY
OUT
V
CC= PIN 16
GND = PIN 8
14
The flip–flops shown in the circuit diagrams are Toggle–Enable flip–flops. A Toggle–
Enable flip–flop is a combination of a D flip–flop and a T flip–flop. When loading data from
Preset inputs P0, P1, P2, and P3, the Load signal is used to disable the Toggle input (Tn) of
the flip–flop. The logic level at the Pn input is then clocked to the Q output of the flip–flop
on the next rising edge of the clock.
A logic zero on the Reset device input forces the internal clock (C) high and resets the Q
output of the flip–flop low.
Q0
Q1
Q1
Q2
Q2
Q3
T1
R
C
C
LOAD
LOAD
P1
T2
R
C
C
LOAD
LOAD
P2
T3
R
C
C
LOAD
LOAD
P3
13
12
11
15
3
4
5
6
7
10
1
F
R
C
C
LOAD
LOAD
CLOCK
LOAD
9
2
相關PDF資料
PDF描述
MC74HC163ADR2 Presettable Counters
MC74HC163ADT Presettable Counters
MC74HC163ADTR2 Presettable Counters
MC74HC163A Presettable Counters
MC74HC163AN Presettable Counters
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