Token Ring Transceiver Module
EPT7045GM
E L E C T R O N I C S I N C .
• Optimized for Texas Instrument’s TMS38054 •
• Supports both UTP and STP Transmission •
• Overvoltage Protection Circuit •
• Complies with or exceeds IEEE 802.5 Requirements •
Electrical Parameters @ 25° C
Impedance
Insertion Loss
Return Loss
Common Mode Rejection
Crosstalk
(dB Max.)
(dB Min.)
(dB Min.)
(dB Min.)
[Xmit/Rcv]
Chip Side
600/150
1-30
MHz
1-16
MHz
32
36
MHz
1-6
MHz
6-17
MHz
17-25
MHz
1-30
MHz
30-100
MHz
100
MHz
200-300
MHz
44
MHz
MHz
Cable Side Xmit Rcv Xmit Rcv Xmit Rcv
Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv
Xmit Rcv
Xmit Rcv
150/100
-.8 -.8
-7
-1 -25 -1 -35 -1 -15 -20 -15 -20 -10 -15 -70 -70 -35 -30 -45 -45 -20 -20
-35
Schematic
Ph- 13
Ph+ 14
Tx+ 12
15 Ts+
16 Ts-
Vcc 2 11
Impedance
Matching
Network
Xmit
Filter
CMF
17 Tu-
Tx- 10
18 Tu+
Gnd 2
9
19 Ch Gnd
Gnd 1
Rx+
3
2
23 Rs-
22 Rs+
CMF
Vcc 1 1
21 Ru+
20 Ru-
Rx-
4
PhRet B 5
PhRet A 6
Package
Dimensions
N
A
(Inches)
(Millimeters)
Dim.
Min. Max. Nom.
Min. Max. Nom.
Pin 1
I.D.
PCA
P
A
B
C
D
E
F
G
H
I
1.290 1.310
32.77 33.27
14.60 14.86
Pad
Q
EPT7045GM
Date Code
B
E
.575
.300
.585
.320
Layout
7.62
28.19
0.076
2.54
8.13
Typ.
.508
Typ.
1.110 Typ.
.003
.100
.780
.015
.008
.090
0°
.020
Typ.
.800
.021
.012
Typ.
8°
19.81 20.32
M
D
H
.381
.203
2.28
0°
.533
.305
Typ.
8°
J
C
J
K
K
L
M
N
P
Q
.025
.045
.635
1.14
.030
.100
.092
.800
.762
2.54
L
F
I
2.34
G
20.32
CST7045GMa Rev. - 10/5/96
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.