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Электронный компонент: 74ACT8244TTR

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74ACT8244
RELAY DRIVER IC
November 1999
s
OPERATES 4 LATCHING RELAIS, 1 SINGLE
SIDE STABLE RELAY AND 1 LED
s
VERY LOW POWER CONSUMPTION
s
TTL COMPATIBLE INPUT THRESHOLDS
s
IMPROVED LATCH-UP IMMUNITY UP TO
300mA
s
TSSOP-20 PACKAGE
DESCRIPTION
The device is a relais driver for line card
application. It is able to operate four latching
relais, one single side stable relay and one LED
connected either to GND or VCC. All the outputs
can be set to LOW with the RST input as shown
in the true table.
LOGIC DIAGRAM
T
(TSSOP Package)
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND F UNCTI ON
1
RST
Master Reset
2
IN1A
Input of 1st latched relay drv
3
IN1B
Input of 1st latched relay drv
4
IN2A
Input of 2nd latched relay drv
5
IN2B
Input of 2nd latched relay drv
6
IN3A
Input of 3rd latched relay drv
7
IN3B
Input of 3rd latched relay drv
8
IN4
Input of 1st relay driver
9
IN5
Input LED driver
10
GND
Ground
11
NC
Not Connected
12
OUT5
Output of LED driver
13
OUT4
Output of 1st relay driver
14
OU3B
Output 3rd latched relay drv
15
OU3A
Output 3rd latched relay drv
16
OU2B
Output 2nd latched relay drv
17
OU2A
Output 2nd latched relay drv
18
OU1B
Output 1st latched relay drv
19
OU1A
Output 1st latched relay drv
20
V
CC
Supply Voltage
ORDER CODES :
74ACT8244TTR
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ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Val ue
Unit
V
CC
Supply Voltage
-0.5 to +7
V
V
I
DC Input Voltage
-0.5 to V
CC
+ 0.5
V
V
O
DC Output Voltage
-0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
50
mA
I
OK
DC Output Diode Current
50
mA
I
O
DC Output Current
100
mA
I
CC
orI
GND
DC V
CC
or Ground Current
400
mA
T
stg
Storage Temperature
-65 to +150
o
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
4.75 to 5.25
V
V
I
Input Voltage
0 to V
CC
V
V
O
Output Voltage
0 to V
CC
V
T
op
Operating Temperature:
-30 to +80
o
C
dt/dv
Input Rise and Fall Time V
CC
= 4.5 to 5.5V (note1)
10
ns/V
1) V
IN
from 0.8 V to 2.0 V
DC SPECIFICATIONS (Electrical characteristics over recommended operating conditions)
Symb ol
Parameter
Test Co ndi ti ons
Value
Un it
Min.
T yp.
Max.
V
IH
High Level Input Threshold
V
O
= 0.1 V or V
CC
- 0.1 V
2.0
1.4
V
V
IL
Low Level Input Threshold
V
O
= 0.1 V or V
CC
- 0.1 V
1.4
0.8
V
V
OH
High Level Output Voltage for
Single Driver
I
OUT
= -35mA
V
CC
-0.68 V
CC
-0.3
V
V
OL
Low Level Output Voltage for
Single Driver
I
OUT
= 35mA
0.25
0.68
V
V
OH
High Level Output Voltage for
Double Relay Driver
I
OUT
= -70mA
V
CC
-0.68 V
CC
-0.3
V
V
OL
Low Level Output Voltage for
Double Relay Driver
I
OUT
= 70mA
0.25
0.68
V
V
OH
High Level Output Voltage for
Single Side Relay or LED
I
OUT
= -50mA
V
CC
-0.8
V
CC
-0.4
V
V
OL
Low Level Output Voltage for
Single Side Relay or LED
I
OUT
= 50mA
0.3
0.8
V
I
I
Input Leakage Current
V
I
= V
CC
or GND
1
A
I
CCT
Max I
CC
/Input
V
I
= V
CC
-2.1 V
0.6
1.5
mA
I
CC
Quiescent Supply Current
V
I
= V
CC
or GND
4
40
A
74ACT8244
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AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, R
L
= 500
, Input t
r
= t
f
=3 ns)
Symb ol
Parameter
T est Cond it ion
Valu e
Un it
Min.
T yp.
Max.
t
PLH
t
PHL
Propagation Delay Time
Over recommended operating
conditions
7.0
11.0
ns
TRUTH TABLE FOR LATCHING RELAY
DRIVER
INPUT
OUT PUT
Co ndi ti on
RST
INn A
INn B
OUnA OUnB
H
X
X
L
L
Storage
L
L
L
L
L
Storage
L
L
H
L
H
Operate
L
H
L
H
L
Release
L
H
H
H
H
Storage
Z = High Impedance
X = Don't Care
n = 1,2,3
TRUTH TABLE FOR SINGLE SIDE RELAY
I NPUT
OUTPUT
IN4
OUT 4
L
H
H
L
TRUTH TABLE FOR LED DRIVER
I NPUT
OUTPUT
IN5
OUT 5
L
H
H
L
OUTPUT CIRCUIT FOR LATCHING RELAY DRIVER
OUTPUT CIRCUIT FOR SINGLE SIDE RELAY
OUTPUT CIRCUIT FOR LED DRIVER
74ACT8244
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Output Characteristics of a Double Relay Driver
N-channel with All Outputs Loaded
Output Characteristics of a Double Relay Driver
P-channel with All Outputs Loaded
Output Characteristics of a Single Side Relay or
Led Driver N-channel with All Outputs Loaded
Output Characteristics of a Single Side Relay or
Led Driver P-channel with All Outputs Loaded
74ACT8244
4/6
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
1.1
0.433
A1
0.05
0.10
0.15
0.002
0.004
0.006
A2
0.85
0.9
0.95
0.335
0.354
0.374
b
0.19
0.30
0.0075
0.0118
c
0.09
0.2
0.0035
0.0079
D
6.4
6.5
6.6
0.252
0.256
0.260
E
6.25
6.4
6.5
0.246
0.252
0.256
E1
4.3
4.4
4.48
0.169
0.173
0.176
e
0.65 BSC
0.0256 BSC
K
0
o
4
o
8
o
0
o
4
o
8
o
L
0.50
0.60
0.70
0.020
0.024
0.028
c
E
b
A2
A
E1
D
1
PIN 1 IDENTIFICATION
A1
L
K
e
TSSOP20 MECHANICAL DATA
74ACT8244
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