MH88634BV-4 데이터 시트보기 (PDF) - Mitel Networks
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MH88634BV-4 Datasheet PDF : 13 Pages
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MH88634B
Advance Information
TIP
1
21
RING
2
20
XLA
3
19
XLD
4
18
XLB
5
17
XLC
6
16
IC
7
15
IC
8
14
IC
9
13
SHK
10
12
RX
11
11
VEE
12
10
TX
13
9
RV
14
8
FL
15
RL
16
VCC
17
AGND
18
7
6
5
4
LRC
19
VRLY
20
3
2
LRD
21
1
Pin Description
Figure 2 - Pin Connections
Pin # Name
Description
1
TIP Tip Lead. Connects to the "Tip" lead of a Telephone Line.
2
RING Ring Lead. Connects to the "Ring" lead of a Telephone Line.
3
XLA Loop Relay Contact A. Connects to XLB through the Loop relay (K1) contacts when the
relay is activated.
4
XLD Loop Relay Contact D. Connects to XLC through the loop relay (K1) contacts, when the
relay is activated.
5
XLB Loop Relay Contact B. Connects to XLA through the loop relay (K1) contacts, when the
relay is activated.
6
XLC Loop Relay Contact C. Connects to XLD through the loop relay (K1) contacts, when the
relay is activated.
7-9
IC Internal Connection. No connection should be made to this pin.
10
SHK Switch Hook (Output). A logic 0 indicates the presence of forward or reverse battery
voltage when LRC is logic 0 and the presence of forward or reverse loop current when LRC
is logic 1.
11
RX Receive (Input). 4-Wire ground (AGND) referenced analog input.
12
VEE Negative Supply Voltage. -5V DC
13
TX Transmit (Output). 4-Wire ground (AGND) referenced analog output.
14
RV Ringing Voltage Detect (Output). A logic low indicates that ringing voltage is across the Tip
and Ring leads.
15
FL Forward Loop Detect (Output). In the on-hook state, a logic 0 output indicates that
forward loop battery is present. In the off-hook state, a logic 0 indicates that forward loop
current is present.
16
RL Reverse Loop Detect (Output). In the on-hook state, a logic 0 output indicates that
reverse loop battery is present. In the off-hook state, a logic 0 output indicates that reverse
loop current is present.
17
VCC Positive Supply Voltage. +5V DC
2-266
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