74HC595 PDF даташит
Спецификация 74HC595 изготовлена «Hitachi» и имеет функцию, называемую «8-bit Shift Register/Latch (with 3-state outputs)». |
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Детали детали
Номер произв | 74HC595 |
Описание | 8-bit Shift Register/Latch (with 3-state outputs) |
Производители | Hitachi |
логотип |
10 Pages
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HD74HC595
8-bit Shift Register/Latch (with 3-state outputs)
Description
This device each contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage
register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift
register and the storage register. The shift register has a direct-overriding clear, serial input, and serial
output pins for cascading.
Both the shift register and storage register clocks are positive-edge triggered. If the user wishes to connect
both clocks together, the shift register state will always be one clock pulse ahead of the storage register.
Features
• High Speed Operation: tpd (RCK to Q) = 17 ns typ (CL = 50 pF)
• High Output Current: Fanout of 15 LSTTL Loads (QA to QH outputs)
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
Function Table
RCK
X
X
X
SCK
X
X
X
SCLR
X
L
H
H
G
H
X
X
X
Function
QA to QH high impedance
Shift register cleared QH’ = L
Shift register clocked Qn = Qn – 1, QA = SER
Contents of shift register transferred to output latches
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HD74HC595
Pin Arrangement
QB 1
QC 2
QD 3
QE 4
QF 5
QG 6
QH 7
GND 8
(Top view)
16 VCC
15 QA
14 SER
13 G
12 RCK
11 SCK
10 SCLR
9 QH'
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage
Output voltage
Output current
DC current drain per VCC, GND
DC input diode current
DC output diode current
Power dissipation per package
Storage Temperature
Symbol
VCC
VIN
VOUT
I OUT
ICC, IGND
I IK
I OK
PT
Tstg
Rating
–0.5 to +7.0
–0.5 to VCC + 0.5
–0.5 to VCC + 0.5
±35
±75
±20
±20
500
–65 to +150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
2
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Logic Diagram
G
RCK
SER
SCK
SCLR
DQ
R
DQ
R
DQ
R
DQ
R
DQ
R
DQ
R
DQ
R
DQ
R
D
D
D
D
D
D
D
D
HD74HC595
QA
QB
QC
QD
QE
QF
QG
QH
QH'
3
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DataSheet26.com | 2020 | Контакты | Поиск |