參數(shù)資料
型號(hào)： SN54LS569A
廠商： Motorola, Inc.
英文描述： Quad 2-Input Multiplexer with 3-State Output; Package: SOEIAJ-16; No of Pins: 16; Container: Tape and Reel; Qty per Container: 2000
中文描述： 4位向上/向下計(jì)數(shù)器三態(tài)輸出
文件頁數(shù)： 2/8頁
文件大小： 260K
代理商： SN54LS569A
5-574
FAST AND LS TTL DATA
SN54/74LS569A
FUNCTION TABLE
INPUTS
OUTPUTS
CP
D
C
B
A
LOAD
CET
CEP
U/D
ACLR
SCLR
OE
RCO
CCO
YD
YC
YB
YA
↑
↑
↑
↑
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
H
H
H
L
L
H
L
L
L
X
H
H
L
X
X
H
H
H
H
H
H
H
H
L
L
L
L
A/R
A/R
H
A/R
A/R
A/R
H
H
(QT – CP) + 1
(QT – CP) – 1
NC
NC
Count Up
Count Down
Count Inhibit
Count Inhibit
NC
NC
NC
NC
NC
NC
↑
↑
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
H
L
L
H
L
H
X
L
H
X
H
H
H
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
L
L
H
H
H
H
L
L
L
H
H
H
L
L
L
H
H
H
L
L
L
H
H
H
L
L
L
Overflow
Overflow
Overflow Inhibit
Underflow
Underflow
Underflow Inhibit
H
H
↑
↑
H
H
↑
↑
L
X
X
X
X
X
X
X
X
X
H
X
X
X
X
X
X
X
X
X
L
X
X
X
X
X
X
X
X
X
H
X
X
X
X
X
X
X
X
X
L
X
X
X
X
X
X
X
X
X
X
H
L
L
H
X
L
L
H
X
X
X
L
H
X
X
L
H
X
X
X
H
L
L
L
H
L
L
L
X
H
H
H
H
H
L
L
L
L
X
H
L
L
L
L
X
X
X
X
X
L
L
L
L
L
L
L
L
L
H
H
H
L
L
H
H
L
L
H
X
H
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
Load Example
Clear (Synchronous)
Clear (Synchronous)
Clear (Synchronous)
Clear (Synchronous)
Asynchronous Clear
Asynchronous Clear
Asynchronous Clear
Asynchronous Clear
Output Disabled
↑
↑
X
H
H
H
X
X
X
H
H
X
Hi-Z
(QT — CP) = Output state prior to clock edge
NC = No change
A/R = Assumes required output state;
High except during Overflow and Underflow
X = Don’t care
LOGIC DIAGRAM
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