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PDF M54HCT258 Data sheet ( Hoja de datos )
| Número de pieza | M54HCT258 | |
| Descripción | HCT257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE HCT258 QUAD 2 CHANNEL MULTIPLEXER 3-STATE / INVERTING | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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M54/M74HCT257
M54/M74HCT258
HCT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
HCT258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING)
. HIGH SPEED
tPD = 16 ns (TYP.) at VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 °C
. COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
. OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 6 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS257/258
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCTXXXF1R M74HCTXXXM1R
M74HCTXXXB1R M74HCTXXXC1R
DESCRIPTION
The M54/74HCT257 and the M54/74HCT258 are
high speed CMOS MULTIPLEXERs fabricated with
silicon gate C2MOS technology.
They have the same high speed performance of
LSTTL combined with true CMOS low power con-
sumption.
These IC’s are composed of an independent 2-
channel multiplexer with common SELECT and EN-
ABLE INPUT.
The M54/74HCT258 is an inverting multiplexer
while the M54/74HCT257 is a non-inverting multi-
plexer. When the ENABLE INPUT is held ”High”,
outputs of both IC’s become high-impedance state.
If SELECT INPUT is held ”Low”, ”A” data is selected,
when SELECT INPUT is high ”H”, ”B” data is
chosen.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
This integrated circuit has input and output charac-
teristics that are fully compatible with 54/74 LSTTL
logic families. M54/74HCT devices are designed to
directly interface HSC2MOS systems with TTL and
NMOS components. They are also plug in replace-
PIN CONNECTIONS (top view)
H CT 2 57
HCT258
February 1993
1/12
1 page  
M54/M74HCT257/258
DC SPECIFICATIONS
Symbol
Parameter
VIH High Level Input
Voltage
VIL Low Level Input
Voltage
VOH High Level
Output Voltage
VOL Low Level Output
Voltage
IOZ 3-State Output
Off State Current
II Input Leakage
Current
ICC Quiescent Supply
Current
∆ICC Additional worst
case supply
current
Test Conditions
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
Value
-40 to 85 oC
74HC
Min. Max.
-55 to 125 oC
54HC
Min. Max.
4.5 2.0 2.0 2.0
to
5.5
4.5 0.8 0.8 0.8
to
5.5
VI = IO=-20 µA 4.4
4.5
VIH
or IO=-4.0 mA 4.18
VIL
4.5
4.31
4.4
4.13
4.4
4.10
VI = IO= 20 µA
4.5
VIH
or IO= 4.0 mA
VIL
0.0 0.1
0.17 0.26
0.1
0.33
0.1
0.4
5.5 VI = VCC or GND
±0.5 ±5 ±10
5.5 VI = VCC or GND
±0.1 ±1
±1
5.5 VI = VCC or GND
1 10 20
5.5 Per Input pin
VI = 0.5V or
VI = 2.4V
Other Inputs at
VCC or GND
2.0 2.9 3.0
Unit
V
V
V
V
µA
µA
µA
mA
5/12
5 Page 
DIM.
A
B
D
d1
d2
E
e
e3
F
G
M
M1
M54/M74HCT257/258
MIN.
9.78
8.89
4.2
7.37
PLCC20 MECHANICAL DATA
mm
TYP.
2.54
0.56
1.27
5.08
0.38
1.27
1.14
MAX.
10.03
9.04
4.57
MIN.
0.385
0.350
0.165
8.38 0.290
0.101
inch
TYP.
0.100
0.022
0.050
0.200
0.015
0.050
0.045
MAX.
0.395
0.356
0.180
0.330
0.004
P027A
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet M54HCT258.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| M54HCT257 | HCT257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE HCT258 QUAD 2 CHANNEL MULTIPLEXER 3-STATE / INVERTING | ST Microelectronics |
| M54HCT257F1R | HCT257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE HCT258 QUAD 2 CHANNEL MULTIPLEXER 3-STATE / INVERTING | ST Microelectronics |
| M54HCT258 | HCT257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE HCT258 QUAD 2 CHANNEL MULTIPLEXER 3-STATE / INVERTING | ST Microelectronics |
| M54HCT258F1R | HCT257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE HCT258 QUAD 2 CHANNEL MULTIPLEXER 3-STATE / INVERTING | ST Microelectronics |
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