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PDF HD74HC240 Data sheet ( Hoja de datos )
| Número de pieza | HD74HC240 | |
| Descripción | Octal Buffers/Line Drivers/Line Receivers(with inverted 3-state outputs) | |
| Fabricantes | Hitachi Semiconductor | |
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HD74HC240
Octal Buffers/Line Drivers/Line Receivers
(with inverted 3-state outputs)
Description
The HD74HC240 is an inverting buffer and has two active low enables (1G and 2G). Each enable
independently controls 4 buffers. This device does not have schmitt trigger inputs.
Features
• High Speed Operation: tpd = 10 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
GA
HX
LH
LL
H : high level
L : low level
X : irrelevant
Z : off (high-impedance) state of a 3-state output
Output
Y
Z
L
H
1 page  
HD74HC240
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Symbol
Propagation delay tPHL
time
VCC (V)
2.0
4.5
Min Typ Max Min
— — 90 —
— 10 18 —
Max Unit
115 ns
23
6.0 — — 15 — 20
tPLH 2.0 — — 90 — 115 ns
4.5 — 10 18 — 23
6.0 — — 15 — 20
Output enable
time
t ZL
2.0 — — 150 — 190 ns
4.5 — 11 30 — 38
6.0 — — 26 — 33
tZH 2.0 — — 150 — 190 ns
4.5 — 12 30 — 38
6.0 — — 26 — 33
Output disable
time
t LZ
2.0 — — 150 — 190 ns
4.5 — 16 30 — 38
6.0 — — 26 — 33
tHZ 2.0 — — 150 — 190 ns
4.5 — 19 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 HD74HC240.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HD74HC240 | Octal Buffers/Line Drivers/Line Receivers(with inverted 3-state outputs) | Hitachi Semiconductor |
| HD74HC240 | Octal Buffers/Line Drivers/Line Receivers |  Renesas |
| HD74HC241 | Octal Buffers/Line Drivers/Line Receivers(with noninverted 3-state outputs) | Hitachi Semiconductor |
| HD74HC242 | Quad. Bus Transceivers (with 3-state outputs)/Quad. Bus Transceivers (with noninverted 3-state outputs) | Hitachi Semiconductor |
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