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PDF HD74HC125 Data sheet ( Hoja de datos )
| Número de pieza | HD74HC125 | |
| Descripción | Quad. Bus Buffer Gates (with 3-state outputs) | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74HC125/HD74HC126
Quad. Bus Buffer Gates (with 3-state outputs)
Description
The HD74HC125, HD74HC126 require the 3-state control input C to be taken high to put the output into
the high impedance condition, whereas the HD74HC125, HD74HC126 requires the control input to be low
to put the output into high impedance.
Features
• High Speed Operation: tpd = 8 ns typ (CL = 50 pF)
• High Output Current: Fanout of 15 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
Inputs
C
HC125
HC126
A
HL
X
LH
L
LH
H
X : Irrelevent
Z : Off (high-impedance) state of a 3-state output.
Output Y
HC125
Z
L
H
HC126
Z
L
H
1 page  
HD74HC125/HD74HC126
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Symbol
Propagation delay tPLH
time
t PHL
VCC (V)
2.0
4.5
6.0
Min Typ Max Min
— — 100 —
— 8 20 —
— — 17 —
Max Unit
125 ns
25
21
Output enable
time
t ZH
t ZL
2.0 — — 150 — 190 ns
4.5 — 9 30 — 38
6.0 — — 26 — 33
Output disable
time
t HZ
t LZ
2.0 — — 150 — 190 ns
4.5 — 14 30 — 38
6.0 — — 26 — 33
Output rise/fall
time
t TLH
t THL
2.0 — — 60 — 75 ns
4.5 — 4 12 — 15
6.0 — — 10 — 13
Input capacitance Cin — — 5 10 — 10 pF
Test Conditions
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet HD74HC125.PDF ] | |
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