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2470 Datasheet(PDF) 1 Page - Allegro MicroSystems

Part # 2470
Description  BUS DRIVER / RECEIVER
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

2470 Datasheet(HTML) 1 Page - Allegro MicroSystems

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2470
BUS DRIVER / RECEIVER
DISCONTINUED
PRODUCT
FOR
REFERENCE
ONL
Y
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Bus Supply Voltage Range,
(VBAT) ......................... -13.5 V to 27 V
Logic Supply Voltage Range,
(VCC) ............................ -0.3 V to 9.0 V
Input Voltage Range,
(VBUS) ........................... -3.0 V to 24 V
Operating Temperature Range,
TA ............................... -40°C to +85°C
Junction Temperature Range,
TJ ................................ -40°C to 150°C
Storage Temperature Range,
TS ................................ -65°C to 150°C
BUS DRIVER / RECEIVER
FUNCTIONAL BLOCK DIAGRAM
Rd
Rd
Td
GND
VCC
VS
REXT
BUS
6
5
4
7
2
1
3
8
CURRENT
LIMIT
22 k
12
25
28 V
The ULQ2470L and ULQ2470M are bi-directional bus driver /
receivers designed specifically for automotive applications. They are
intended to be used as an interface between a microprocessor and a
single-wire multiplex data bus operating from the A-line or battery.
Each device consists of a wave-shaped open-collector driver, a pull-up
resistor, and an input filter and buffer.
Output driver protection circuitry provides output shutdown if
currents in excess of 25 to 30 mA occur. Additionally, over-voltage
shutdown occurs when the bus voltage exceeds approximately
22 volts.
Dwg. FP-039
FEATURES AND BENEFITS
s Over-Voltage Protection
s Diode Isolation from both Ground and Supply
s Reverse-Battery Protection
s Low Supply Current
s High Noise Immunity
s Output Current Limiting
s Low Standby Current—24 mA Max.
s Open-Ground Protection
s Under-Voltage Lockout
2470
ULQ2470M
1
2
3
45
6
7
8
Rd
Rd
Td
GND
VCC
VS
REXT
BUS
Dwg. PP-061
Note that the ULQ2470M (DIP) and the ULQ2470L
(SOIC) are electrically identical and share a
common terminal number assignment.


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