MAX4670 Просмотр технического описания (PDF) - Maxim Integrated
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Компоненты Описание
производитель
MAX4670 Datasheet PDF : 20 Pages
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PIN
—
1
2
3
4
5
6
7
8
9, 32
10
11
12
13
14
15
16
17
18
19
20
21
Integrated T1/E1/J1 Short-Haul and
Long-Haul Protection Switch
NAME
N.C.
INB
COM3
COM4
GND
INC
COM5
COM6
SWITCH
V+
IND
COM7
COM8
NO8
NC8
NO7
NC7
NO6
NC6
NO5
NC5
NO4
Pin Description
FUNCTION
No Connection. Not internally connected.
Transmitter 1 Logic Control. Drive INB high to connect NC3 and NC4. INB logic is ignored
when SWITCH asserts low.
Common Terminal 3. Transmitter 1 positive differential terminal. Connect COM3 to the transmit
interface transformer.
Common Terminal 4. Transmitter 1 negative differential terminal. Connect COM4 to the
transmit interface transformer.
Ground
Transmitter 2 Logic Control. Drive INC high to connect NC5 and NC6. INC logic is ignored
when SWITCH asserts low.
Common Terminal 5. Transmitter 2 positive differential terminal. Connect COM5 to the transmit
interface transformer.
Common Terminal 6. Transmitter 2 negative differential terminal. Connect COM6 to the
transmit interface transformer.
Protection Switch Control. Assert SWITCH low to connect all switches to protection bus. When
SWITCH asserts low, SWITCH overrides all IN_ inputs. Assert SWITCH high to enable all
switches and let the respective IN control the switches.
Positive Supply Voltage. Bypass V+ to ground with a 0.1µF ceramic capacitor.
Receiver 2 Logic Control. Drive IND high to connect NC7 and NC8. IND logic is ignored when
SWITCH asserts low.
Common Terminal 7. Receiver 2 positive differential terminal. Connect COM7 to the receive
interface transformer.
Common Terminal 8. Receiver 2 negative differential terminal. Connect COM8 to the receive
interface transformer.
Normally Open Terminal 8. Receiver 2 differential protection terminal. Connect NO8 to the
protection bus.
Normally Closed Terminal 8. Receiver 2 differential terminal. Connect NC8 to LIU receiver.
Normally Open Terminal 7. Receiver 2 differential protection terminal. Connect NO7 to the
protection bus.
Normally Closed Terminal 7. Receiver 2 differential terminal. Connect NC7 to LIU receiver.
Normally Open Terminal 6. Transmitter 2 differential protection terminal. Connect NO6 to the
protection bus.
Normally Closed Terminal 6. Transmitter 2 differential terminal. Connect NC6 to LIU receiver.
Normally Open Terminal 5. Transmitter 2 differential protection terminal. Connect NO5 to the
protection bus.
Normally Closed Terminal 5. Transmitter 2 differential terminal. Connect NC5 to LIU receiver.
Normally Open Terminal 4. Transmitter 1 differential protection terminal. Connect NO4 to the
protection bus.
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