參數(shù)資料
型號(hào): MC74HC161ADR2G
廠商: ON Semiconductor
文件頁(yè)數(shù): 15/15頁(yè)
文件大?。?/td> 0K
描述: IC COUNTER 4BIT PRESET 16SOIC
標(biāo)準(zhǔn)包裝: 2,500
系列: 74HC
邏輯類型: 二進(jìn)制計(jì)數(shù)器
方向:
元件數(shù): 1
每個(gè)元件的位元數(shù): 4
復(fù)位: 異步
計(jì)時(shí): 同步
計(jì)數(shù)速率: 167MHz
觸發(fā)器類型: 正邊沿
電源電壓: 2 V ~ 6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC N
包裝: 帶卷 (TR)
MC74HC161A, MC74HC163A
http://onsemi.com
9
P0
P1
P2
P3
ENABLE
P
ENABLE
T
RESET
T0 R C C LOAD LOAD P0
Q0
Q1
Q2
Q3
RIPPLE CARR
Y
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
Tflip
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
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
Figure 11. 4Bit Binary Counter with Asynchronous Reset (MC74HC161A)
R
C
LOAD
CLOCK
LOAD
9
2
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