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HD74HC595のメーカーはHitachi Semiconductorです、この部品の機能は「8-bit Shift Register/Latch (with 3-state outputs)」です。 |
部品番号 | HD74HC595 |
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部品説明 | 8-bit Shift Register/Latch (with 3-state outputs) | ||
メーカ | Hitachi Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHD74HC595ダウンロード(pdfファイル)リンクがあります。 Total 10 pages
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
1 Page 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
3Pages HD74HC595
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) (cont)
Ta = 25°C
Ta = –40 to
+85°C
Item
Hold time
Symbol
th
VCC (V)
2.0
4.5
Min Typ Max Min
5 —— 5
5 1 —5
Max Unit
— ns
—
6.0 5 — — 5 —
Output rise/fall
time
t TLH
t THL
2.0 — — 75 — 95 ns
4.5 — 5 15 — 19
6.0 — — 13 — 16
2.0 — — 60 — 75 ns
4.5 — 4 12 — 15
6.0 — — 10 — 13
Input capacitance Cin
—
— 5 10 — 5
pF
Test Conditions
QH’
Q
6
6 Page | |||
ページ | 合計 : 10 ページ | ||
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PDF ダウンロード | [ HD74HC595 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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