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Número de pieza | M54HC85 | |
Descripción | 4-BIT MAGNITUDE COMPARATOR | |
Fabricantes | ST Microelectronics | |
Logotipo | ||
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No Preview Available ! M54HC85
M74HC85
4-BIT MAGNITUDE COMPARATOR
. HIGH SPEED
tPD = 22 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
54/74LS85
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HC85F1R
M 74H C8 5M 1R
M 74HC 85 B1 R
M 74H C8 5C 1R
DESCRIPTION
The M54/74HC85 is a high speed CMOS 4-BIT
MAGNITUDE COMPARATOR fabricated in silicon
gate C2MOS technology. It has the same high
speed performance of LSTTL combined with true
CMOS low power consumption. This comparator
compares two 4-bit words and provides a high volt-
age level on one of the A > B out, A = B out and A < B
out outputs. The comparing bit number is easily ex-
panded by cascading several devices as shown in
the typical application. All inputs are equipped with
protection circuits against static discharge and tran-
sient excess voltage.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN CONNECTIONS (top view)
December 1992
NC =
No Internal
Connection
1/11
1 page M54/M74HC85
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
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.
Unit
tTLH Output Transition 2.0
tTHL Time
4.5
30 75
8 15
95 110
19 22 ns
6.0 7 13 16 19
tPLH Propagation
tPHL Delay Time
(A, B-OUT)
2.0
4.5
6.0
96 185 230 280
24 37 46 56 ns
20 31 39 48
tPLH Propagation
2.0
tPHL Delay Time
4.5
(CASCADE-OUT) 6.0
48 95
12 19
10 16
120 145
24 29 ns
20 25
CIN Input Capacitance
5 10 10 10 pF
CPD (*) Power Dissipation
Capacitance
23
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC
SWITCHING CHARACTERISTICS TEST
WAVEFORM
TEST CIRCUIT ICC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHING CHARACTERISTICS TEST.
5/11
5 Page M54/M74HC85
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
© 1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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11/11
11 Page |
Páginas | Total 11 Páginas | |
PDF Descargar | [ Datasheet M54HC85.PDF ] |
Número de pieza | Descripción | Fabricantes |
M54HC85 | 4-BIT MAGNITUDE COMPARATOR | ST Microelectronics |
M54HC85F1R | 4-BIT MAGNITUDE COMPARATOR | ST Microelectronics |
M54HC86 | QUAD EXCLUSIVE OR GATE | ST Microelectronics |
M54HC86F1R | QUAD EXCLUSIVE OR GATE | ST Microelectronics |
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