MH88632 Ver la hoja de datos (PDF) - Mitel Networks
Número de pieza
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Lista de partido
MH88632 Datasheet PDF : 18 Pages
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MH88632
Preliminary Information
TIP
1
RING
2
XLA
3
XLB
4
XLC
5
XLD
6
IC
7
GRD
8
IC
9
IC
10
RGND
11
VRLY
12
LRD
13
BRD
14
LRC
15
BRC
16
GRC
17
AGND
18
NATT
19
N1
20
N2
21
Z900
22
Z1
23
Z2
24
TX
25
RX
26
GTX0
27
GTX1
28
GRX0
29
GRX1
30
IC
31
Z600
32
NS
33
TG
34
RL
35
RV
36
FL
37
RG
38
VEE
39
VDD
40
Pin Description
Figure 2 - Pin Connections
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Name
Description
TIP
RING
XLA
XLB
XLC
XLD
IC
GRD
IC
IC
RGND
VRLY
LRD
BRD
LRC
Tip Lead. Connects to the “Tip” or “Ring” lead of Central Office.
Ring Lead. Connects to the “Ring” or “Tip” lead of the Central Office.
Loop Relay Contact A. Connects to XLB through the loop relay (K1) contacts when the
relay is activated. Activates internal active termination circuitry.
Loop Relay Contact B. See XLA for description.
Loop Relay Contact C. Connects to XLD through the loop relay (K1) contacts when the
relay is activated. Activates internal active termination circuitry.
Loop Relay Contact D. See XLC for description
Internal Connection.This pin is internally connected and must be left open.
Ground Relay Lead Relay Drive (Output). Connects to the Ground Ring Lead Relay Coil,
used for Ground Start applications. A logic low activates the relay. An internal clamp diode
from VRLY to GND is provided.
Internal Connection. This pin is internally connected and must be left open.
Internal Connection. This pin is internally connected and must be left open.
Relay Ground. Return path for relay supply voltage.
Relay Positive Supply Voltage. Normally +5V. Connects to the relay coil and the relay
supply voltage
Loop Relay Drive (Output). Connects to the Bias Relay coil. A logic low activates the
relay. An internal clamp diode from VRLY to LRD is provided.
Bias Relay Drive (Output). Connects to the Bias Relay coil, used for Ground start
applications only. A logic low activates the relay. An internal clamp diode from VRLY to BRD
is provided.
Loop Relay Control (Input). A logic high activates the Loop Relay Drive output (LRD). The
Loop Relay activates internal circuitry which provides a DC termination across Tip and
Ring. Used for line seizure and dial pulsing.
2-236
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