RS-485 Data Interface Applications
RS-232 Data Interface Applications
1800 VRMS Minimum Isolation
Schematic
"E"
Schematic
"C"
Pulse Transformers
for Maxim "MAX253"
Thru-hole & Surface Mount
Custom Designs and Variations on
electrical data available
Electrical Specifications 1,2 at 25OC
Turns
Ratio
( + 5 % )
ET *
min.
(V-µS)
OCL
min.
( mH )
PRI-SEC
CW/W max.
( pF )
Leakage
LL max.
( µH )
T6-Pkg.
Part
Number
Wide-SMD
Part
Number
Pri. DCR Sec. DCR
Schem.
Style
max.
max.
(Ω )
(Ω )
T-941
T-942
T-943
T-944
T-945
T-971
T-972
T-973
T-974
T-975
1CT:1
1.2
1.2
0.8
1.2
1.2
45
45
35
45
45
0.6
0.6
0.4
0.6
0.6
0.7
0.7
0.6
0.7
0.7
0.7
0.9
1.4
3.5
0.7
20
20
12
20
20
E
C
C
C
C
1CT:1.3CT
1CT:2.1CT
1CT:5CT
1CT:1CT
*
Due to High ET Product, these parts are recommended
for all applications where FS is High, Open, or Low.
1. Primary Pins for all parts listed are pins 1-5.
2. Temp range is -40OC to +85OC
Physical Dimensions
inches (mm)
"T6" Package
T-941 thru T-945
Wide-SMD Package
T-971 thru T-975
.410
(10.41)
MAX.
.410
(10.41)
MAX.
.350
(8.89)
MAX.
.500
(12.70)
MAX.
.260
.250
(6.35)
MAX.
(6.60)
MAX.
.300
.080
(2.03)
(7.62)
MAX.
.120
(3.05)
MIN.
.040
(1.02)
TYP.
.340
(8.64)
.010
(0.25)
TYP.
.020
.100
.510 (12.95)
.480 (12.19)
(0.51) (2.54)
.400
(10.16)
SMD available
on Tape & Reel
TYP.
TYP.
.100
(2.54)
TYP.
.020 DIA.
(0.51)
TYP.
Electrical Specifications 1,2 at 25OC
Turns
OCL
min.
( mH )
PRI-SEC
CW/W max.
( pF )
Leakage
LL max.
( µH )
DIP
SMD
Pri. DCR
max.
(Ω )
Sec. DCR
max.
ET **
min.
(V-µS)
Ratio
Schem.
Style
Part
Part
( + 5 % )
Number
Number
(Ω )
T-1106
T-1107
T-1108
T-1110
T-1106G
T-1107G
T-1108G
T-1110G
1CT:1
1.2
1.2
0.8
1.2
60
60
50
60
0.8
0.8
0.6
0.8
0.8
0.8
0.7
0.8
0.8
1.0
1.6
0.8
12
12
8
E
C
C
C
1CT:1.3CT
1CT:2.1CT
1CT:1CT
12
** Due to lower ET Product, these parts are only recommended
for applications where FS is High or Open.
1. Primary Pins for all parts listed are pins 1-5.
2. Temp range is -40OC to +85OC
6-Pin DIP Package
T-941 thru T-945
6-Pin SMD Package
T-1106G thru T-1110G
SMD available
on Tape & Reel
.285
(7.24)
MAX.
.315
(8.00)
MAX.
.315
(8.00)
MAX.
.270
(6.86)
.205
(5.21)
MAX.
.200
(5.08)
MAX.
.008 R
(0.20)
.010
(0.25)
TYP.
.010
(0.25)
TYP.
.120
(3.05)
MIN.
.012
(0.30)
TYP.
.286
.020
(0.38)
TYP.
.300
(7.27)
(7.62)
.038 .100
(0.96) (2.54)
TYP. TYP.
.050
(1.27)
TYP.
.365
(9.27)
MAX.
.425 (10.80)
.405 (10.29)
.100
(2.54)
TYP.
.020
(0.51)
TYP.
For other values & Custom Designs, contact factory.
Specifications subject to change without notice.
MAXIM - 4/99
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Rhombus
Industries Inc.
35
Tel: (714) 898-0960 • Fax: (714) 896-0971