Token Ring Transceiver Module
EPT7055AM
E L E C T R O N I C S I N C .
• Optimized for voltage source driving into 150Ω •
• Enhanced Common Mode performance over UTP •
• Robust construction allows for solder reflow processes •
• Complies with or exceeds IEEE 802.5 Requirements •
Electrical Parameters @ 25° C
Impedance
(Ω)
[Xmit/Rcv]
Insertion Loss
Return Loss
(dB Min.)
Common Mode Rejection
Crosstalk
(dB Min.)
(dB Max.)
(dB Min.)
10
MHz
Chip Side
1-16
MHz
32
MHz
36
MHz
1-8
MHz
8-17
MHz
17-24
MHz
1-30
MHz
30-100
MHz
100-200
MHz
200-300
MHz
44
MHz
150
Cable Side Xmit Rcv Xmit Rcv Xmit Rcv
Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv
Xmit Rcv
Xmit Rcv
100
-.6 -.5
-7
-1 -25 -3 -3.5 -3
-18 -23 -12 -20
-8 -10 -57 -40 -35 -35 -30 -29 -20 -17
-50
Schematic
1 : .817
TX1+ 2
14 TXO+
LPF
150Ω
13 TXO-
TX1- 4
9 PHA
UTP
CT- 5
12 RX1+
RX0+ 6
150Ω
11 RX1-
10 PHB
RX0- 8
1 : .817
RXCT 7
Dimensions
Package
(Inches)
Dim. Min. Max. Nom.
(Millimeters)
Min. Max. Nom.
A
A
B
C
D
E
F
G
H
I
1.480 1.500
37.85 38.10
B
.265
.450
.275
.460
6.73
6.99
11.43 11.68
33.02 Typ.
1.300 Typ.
Pin 1 I.D.
.010
.100
.100
.020
.010°
.135
.015
.140
.120
.024
Typ.
.140
.254
3.18
2.54
.508
.254
3.43
.381
3.56
Typ.
.610
Typ.
.356
PCA
EPT7055AM
Date Code
E
C
J
H
F
G
I
D
J
CST7055AMa Rev. A 6/11/97
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
Product performance is limited to specified parameters. Data is subject to change without prior notice.