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74HC155 PDF даташит

Спецификация 74HC155 изготовлена ​​​​«STMicroelectronics» и имеет функцию, называемую «DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER».

Детали детали

Номер произв 74HC155
Описание DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER
Производители STMicroelectronics
логотип STMicroelectronics логотип 

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74HC155 Даташит, Описание, Даташиты
M54HC155
M74HC155
DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER
. HIGH SPEED
tPD = 12 ns (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH= IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS155
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 15 5F 1R
M 74H C1 55 M1 R
M 74HC 15 5B 1R
M 74H C1 55 C1 R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC155 is a high speed CMOS DUAL 2-
TO-4 LINE DECODER fabricated in silicon gate
C2MOS technology.
It has the same high speed performance of LSTTL
combined with true CMOS low power consumption.
It features dual 1-TO-4 line demultiplexers with indi-
vidual strobe inputs (1G and 2G), individual data in-
puts (1C and 2C) and common binary address
inputs (A and B).
When both decoders are enabled by the strobes, the
inverted output of 1C data and non-inverted output
of 2C data will be brought to the select output pins
of each sections. A 1-TO-8 line demultiplexer can
also be easily built up by providing a data signal to
both 1C and 2C inputs ; the output order from the
msb is 1Y3, 1Y2, 1Y1, 1Y0, 2Y3, 2Y2, 2Y1, 2Y0.
This device can be used as a 2-to-4 line decoder or
a 3-to-8 line decoder when 1C is held high and 2C
is held low.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
December 1992
NC =
No Internal
Connection
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74HC155 Даташит, Описание, Даташиты
M54/M74HC155
INPUT AND OUTPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOL
PIN DESCRIPTION
PIN No SYMBOL
1, 15
1C, 2C
2, 14
1G, 2G
3, 13
B, A
7, 6, 5, 4 1Y0 to 1Y3
9, 10, 11, 12 2Y0 to 2Y3
8 GND
16 VCC
NAME AND FUNCTION
Data Inputs
Strobe Inputs
Common Data Inputs
Outputs
Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INPUTS
OUTPUTS
B A 1G 1C 1Y0 1Y1 1Y2 1Y3
XXHXHHHH
L L LH LHHH
LHLHH LHH
HL LHHHL H
HH L HHHHL
X X X L HHHH
TRUTH TABLE
INPUTS
OUTPUTS
B A 2G 2C 2Y0 2Y1 2Y2 2Y3
X XHXHHHH
L L L L LHHH
LHL LH LHH
HLL LHHLH
HHL
LH
HH
L
X XXHHHHH
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74HC155 Даташит, Описание, Даташиты
LOGIC CIRCUIT
M54/M74HC155
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
V
VI DC Input Voltage
-0.5 to VCC + 0.5
V
VO DC Output Voltage
IIK DC Input Diode Current
-0.5 to VCC + 0.5
± 20
V
mA
IOK DC Output Diode Current
± 20 mA
IO DC Output Source Sink Current Per Output Pin
± 25 mA
ICC or IGND DC VCC or Ground Current
± 50 mA
PD Power Dissipation
500 (*)
mW
Tstg Storage Temperature
-65 to +150
oC
TL Lead Temperature (10 sec)
300 oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
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