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HD74HC4520 の電気的特性と機能

HD74HC4520のメーカーはHitachi Semiconductorです、この部品の機能は「Dual BCD Use Converters/Dual Binary Up Converters」です。


製品の詳細 ( Datasheet PDF )

部品番号 HD74HC4520
部品説明 Dual BCD Use Converters/Dual Binary Up Converters
メーカ Hitachi Semiconductor
ロゴ Hitachi Semiconductor ロゴ 




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HD74HC4520 Datasheet, HD74HC4520 PDF,ピン配置, 機能
HD74HC4518/HD74HC4520
Dual BCD Use Converters/Dual Binary Up Converters
Description
The HD74HC4518 dual BCD counter and the HD74HC4520 dual binary counter consist of two identical,
independent, internally synchronous 4-stage counters. The counter stages are type D flip-flops, with
interchangeable Clock and Enable lines for incrementing on either the positive-going or negative-going
transition as required when cascading multiple stages. Each counter can be cleared by applying a high
level on the Reset line. In addition, the HD74HC4518 will count out of all undefined states within two
clock periods. These complementary MOS up counters find primary use in multi-stage synchronous or
ripple counting applications requiring low power dissipation and/or high noise immunity.
Features
High Speed Operation
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)
Function Table
Clock
L
X
H
X
Enable
H
X
L
X
Reset
L
L
L
L
L
L
H
Operation
Increment counter
Increment counter
No change
No change
No change
No change
Q0 to Q3 = L

1 Page





HD74HC4520 pdf, ピン配列
Timing Diagram
Clock
Enable
Reset
Q0
HD74HC4518
Q1
Q2
Q3
Q0
HD74HC4520
Q1
Q2
Q3
HD74HC4518/HD74HC4520
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
12345678901234567890
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 4
3


3Pages


HD74HC4520 電子部品, 半導体
HD74HC4518/HD74HC4520
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
——5 —
— — 27 —
Max Unit Test Conditions
4 MHz
21
6.0 — — 32 — 25
Propagation delay tPLH
time
t PHL
2.0 — — 190 — 240 ns Clock to Q
4.5 — 22 38 — 48
6.0 — — 32 — 41
tPLH 2.0 — — 200 — 250 ns Reset to Q
tPHL 4.5 — 22 40 — 50
6.0 — — 34 — 43
tPLH 2.0 — — 190 — 240 ns Enable to Q
tPHL 4.5 — 17 38 — 48
6.0 — — 32 — 41
Pulse width tw 2.0 80 — — 100 — ns
4.5 16 7 — 20 —
6.0 14 — — 17 —
Output rise/fall
time
t TLH
t THL
2.0 — — 75 — 95 ns
4.5 — — 15 — 19
6.0 — — 13 — 16
Input capacitance Cin — — 5 10 — 10 pF
Removel time
t rem
2.0 0 — — 0 — ns Reset clock
4.5 0 –3 — 0 —
6.0 0 — — 0 —
6

6 Page



ページ 合計 : 10 ページ
 
PDF
ダウンロード
[ HD74HC4520 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 :


部品番号部品説明メーカ
HD74HC4520

Dual BCD Use Converters/Dual Binary Up Converters

Hitachi Semiconductor
Hitachi Semiconductor


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