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HD74HC195 の電気的特性と機能

HD74HC195のメーカーはHitachi Semiconductorです、この部品の機能は「4-bit Parallel-Access Shift Register」です。


製品の詳細 ( Datasheet PDF )

部品番号 HD74HC195
部品説明 4-bit Parallel-Access Shift Register
メーカ Hitachi Semiconductor
ロゴ Hitachi Semiconductor ロゴ 




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HD74HC195 Datasheet, HD74HC195 PDF,ピン配置, 機能
HD74HC195
4-bit Parallel-Access Shift Register
Description
This shift register features parallel inputs, parallel outputs, J-K serial inputs, Shift/Load control input, and a
direct overriding clear. This shift register can operate in two modes: Parallel load; shift from QA towards
QD.
Paralle loading is accomplished by applying the four bits of data, and taking the Shift/Load control Input
low. The data is loaded into the associated flip-flops and appears at the outputs after the positive transition
of the clock input. During parallel loading, serial data flow is inhibited. Serial shifting occurs
synchronously when the Shift/Load control input is high. Serial data for this mode is entered at the J-K
inputs. These inputs allow the first stage to perform as a J-K or toggle flip-flop as shown in the function
table.
Features
High Speed Operation: tpd (Clock to Q) = 13 ns typ (CL = 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
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)

1 Page





HD74HC195 pdf, ピン配列
Pin Arrangement
HD74HC195
Clear 1
Serial
Inputs
J2
K3
A4
B5
Parallel
Inputs C 6
D7
GND 8
Timing Diagram
Clock
Clear
Serial
Inputs
J
Shift/Load K
Parallel
Data
Inputs
Outputs
A
B
C
D
QA
QB
QC
QD
Clear
J Clear QA
K QB
A QC
B QD
C QD
D CK
Shift/Load
(Top view)
16 VCC
15 QA
14 QB
13 QC Outputs
12 QD
11 QD
10 Clock
9 Shift/Load
H
L
H
L
Serial Shift
Load
Serial Shift
3


3Pages


HD74HC195 電子部品, 半導体
HD74HC195
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Maximum clock
frequency
Symbol
f max
VCC (V)
2.0
4.5
Min Typ Max Min
——6 —
— — 30 —
Max Unit
5 MHZ
24
6.0 — — 35 — 28
Propagation delay tPHL
time
2.0 — — 140 — 175 ns
4.5 — 13 28 — 35
6.0 — — 24 — 30
tPLH 2.0 — — 140 — 175 ns
4.5 — 13 28 — 35
6.0 — — 24 — 30
tPHL 2.0 — — 150 — 190 ns
4.5 — 15 30 — 38
6.0 — — 26 — 33
Pulse width tw 2.0 80 — — 100 — ns
4.5 16 7 — 20 —
6.0 14 — — 17 —
Setup time
tsu 2.0 100 — — 125 — ns
4.5 20 6 — 25 —
6.0 17 — — 21 —
2.0 100 — — 125 — ns
4.5 20 13 — 25 —
6.0 17 — — 21 —
Hold time
th 2.0 0 — — 0 — ns
4.5 0 –3 — 0 —
6.0 0 — — 0 —
Removal time
t rem
2.0 75 — — 95 — ns
4.5 15 8 — 19 —
6.0 13 — — 16 —
2.0 25 — — 31 — ns
4.5 5 0 — 6 —
6.0 4 — — 5 —
Test Conditions
Clock to Q
Clear to Q
Clock to Clear
A, B, C, D, J, K to Clock
Shift/Load to Clock
Any input except Shift/Load
Shift/Load to Clock
Clear inactive to Clock
6

6 Page



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[ HD74HC195 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。


共有リンク

Link :


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