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PDF M54HC620 Data sheet ( Hoja de datos )

Número de pieza M54HC620
Descripción OCTAL BUS TRANSCEIVER HC620 3 STATE INVERTING HC623 3 STATE NON INVERTING
Fabricantes ST Microelectronics 
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No Preview Available ! M54HC620 Hoja de datos, Descripción, Manual

M54/74HC620
M54/74HC623
OCTAL BUS TRANSCEIVER
HC620 3 STATE INVERTING HC623 3 STATE NON INVERTING
. HIGH SPEED
tPD = 10 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
15 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 6 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V to 6 V
. PIN AND FUNCTION COMPATIBLE
WITH LS620/623
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
DESCRIPTION
The M54/74HC620/623 are high speed CMOS
OCTAL BUS TRANSCEIVERS fabricated in silicon
gate C2MOS technology. They have the same high
speed performance of LSTTL combined with true
CMOS low power consumption.
These octal bus transceivers are designed for asyn-
chronous two-way communication between data
buses. The control function implementation allows
maximum flexibility in timing.
These devices allow data transmission from the A
bus to B bus or from the B to the A bus depending
upon the logic levels at the enable inputs (GBA and
GAB). The enable inputs can be used to disable the
device so that the buses are effectively isolated.
The dual-enable configuration gives these devices
the capability to store data by simultaneous enabling
of GBA and GAB.
Each output reinforces its input in this transceiver
configuration. Thus, when both control inputs are
enabled and all other data sources to the two sets
of bus lines are at high impedance, both sets of bus
lines (16 in all) will remain at their last states. The 8-
bit codes appearing on the two sets of buses will be
identical for the ’HC623 or complementary for the
’HC620. All inputs are equipped with protection cir-
cuits against static discharge and transient excess
voltage.
October 1992
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
1/11

1 page




M54HC620 pdf
M54/M74HC620/623
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC CL
(V) (pF)
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 50
25 60 75 90
7 12 15 18 ns
6.0 6 10 13 15
tPLH Propagation
tPHL Delay Time
(for HC620)
2.0
4.5 50
6.0
41 100 125 150
12 20 25 30 ns
10 17 21 26
2.0
4.5 150
55 130 165 195
16 26 33 39 ns
6.0 14 22 28 33
tPLH Propagation
tPHL Delay Time
(for HC623)
2.0
4.5 50
6.0
38 85
12 17
10 14
105 130
21 26 ns
18 22
2.0
4.5 150
51 130 165 195
16 26 33 39 ns
6.0 14 22 28 33
tPZL Output Enable
2.0
57 150 190 225
tPZH Time
4.5 50 RL = 1 K
19 30
38
45 ns
6.0 16 26 32 38
2.0 69 180 225 270
4.5 150 RL = 1 K
23 36
45
54 ns
0 20 31 38 46
tPLZ Output Disable
2.0
43 125 155 190
tPHZ Time
4.5 50 RL = 1 K
18 25
31
38 ns
6.0 15 21 26 32
CIN Input Capacitance
5 10 10 10 pF
CPD (*) Power Dissipation
Capacitance
for HC620
for HC623
32
34
pF
CPD isdefined 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
5/11

5 Page





M54HC620 arduino
M54/M74HC620/623
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
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
11/11

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