mh89761 Mitel, mh89761 Datasheet

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mh89761

Manufacturer Part Number
mh89761
Description
T1 Transmit Equalizer Advance Information
Manufacturer
Mitel
Datasheet

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MH89761
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Features
Description
The MH89761 is a programmable transmit equalizer
for use with a T1 line interface, specifically the
MH89760B. The MH89761 contains a three setting
transmit equalizer, and a 6 dB pad for external loop
around. The input and output impedance of the
circuit is 100 . The device is fabricated in thick film
hybrid technology and is 2 inches high by 0.5 inches
wide. The MH89761 is designed to drive 22 gauge
twisted pair from the multiplex equipment to the
crossconnect point.
MH89761 is connected to the transmit side of a T1
interface.
Compatible with the MH89760B
Transmit equalizer and 6dB loop around circuit
6dB pad for easier loopback testing
Programmable for varying degrees of
equalization
MH89760B
OUTA
OUTB
RxR
RxT
+12V
Figure 1 shows how the
C2
L2
1:
1:
1:
1:
TR2
TR1
Figure 1 - Connection Diagram
:0.5
1:
R1
L1
C1
Ordering Information -40 C to 85 C
MH89761
S4
S1
S2
S3
S5
S6
S7
RCHR
RCHT
RCLR
RCLT
TxR
TxT
EIR
SW
EIT
EC
RL
RL
EA
EB
TL
TL
L1
L2
TI
Ri
EIT
EIR
EA
EB
EC
SW
RCLT
RCHT
RCLR
RCHR
Ti
Ri
T1 Transmit Equalizer
MH89761
Pin Connections
ISSUE 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Advance Information
TxR
TxT
20 Pin SIP Hybrid
RL
TL
MH89761
R1 = 150
C1 = .01 F
C2 = .47 F
L1 = 33 H
L2 = 33 H
May 1995
4-93

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mh89761 Summary of contents

Page 1

... The device is fabricated in thick film hybrid technology and is 2 inches high by 0.5 inches wide. The MH89761 is designed to drive 22 gauge twisted pair from the multiplex equipment to the crossconnect point. Figure 1 shows how the MH89761 is connected to the transmit side interface. MH89760B OUTA • +12V ...

Page 2

... MH89761 Applications The MH89761 can be connected to the MH89760B as illustrated in Figure 1. All pins on the MH89761 not shown connected in Figure 1 should be left open. The internal circuit of the equalizer is shown in Figure 2. The MH89761 has two separate circuits; a 6dB pad and an equalizer. Ti and Ri are inputs to the 6dB pad on the device. ...

Page 3

... SHORT 1000K 2000K 5000K 10M Frequency (Hz) MH89761 ...

Page 4

... MH89761 ...

Page 5

... AAAA AA AA AAAA AAAA Pin 1 Side View 0.010 + 0.002 (0.25 + 0.05) 0.2 Max. (5.1 Max.) Notes: 1) Not to scale. 2) Dimensions in inches 3) (Dimensions in millimeters) * Dimension to center of pin 2.00 + 0.02 (50 Front View 1 0.05 0.01 (1.3 0.3) * 0.05 + 0.02 0.020 + 0.005 (1.3 + 0.5) (0.51 + 0.13) Figure 7 - Mechanical Data MH89761 0.40 + 0.02 (10 0.18 + 0.02 (4.6 + 0.5) * 0.10 + 0.01 (2.5 + 0.2) 4-97 ...

Page 6

... MH89761 NOTES: 4-98 Advance Information ...

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