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M54HC147 Datasheet دیتاشیت PDF دانلود

دیتاشیت - ST Microelectronics - 10 TO 4 LINE PRIORITY ENCODER

شماره قطعه M54HC147
شرح مفصل 10 TO 4 LINE PRIORITY ENCODER
تولید کننده ST Microelectronics 
آرم ST Microelectronics 


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M54HC147 شرح
M54HC147
M74HC147
10 TO 4 LINE PRIORITY ENCODER
. HIGH SPEED
tPD = 15 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 54/74LS147
DESCRIPTION
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 14 7F 1R
M 74H C1 47 M1 R
M 74HC 14 7B 1R
M 74H C1 47 C1 R
The M54/74HC147 is a high speed CMOS 10 TO 4
LINE PRIORITY ENCODER fabricated in silicon
gate C2MOS technology. It has the same high
speed performance of LSTTL combined with true
CMOS low power consumption.
This device features priority encoding of the inputs
to ensure that only the highest order data line is en-
coded. Nine input lines are encoded to a four line
BCD output. The implied decimal zero condition re-
quires no input condition as zero is encoded when
all nine data lines are at high logic level. All data input
and outputs are active at the low logic level. All in-
puts are equipped with protection circuits against
static discharge and transient excess voltage.
PIN CONNECTIONS (top view)
INPUT AND OUTPUT EQUIVALENT CIRCUIT
October 1992
NC =
No Internal
Connection
1/10

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