PE-68678NLT Datasheet, PDF (8/9 Pages) Pulse A Technitrol Company – T1/Cept/ISDN-PRI Transformers

T1/Cept/ISDN-PRI Transformers
Notes From Tables (pages 1-6):
A. Tolerance leakage inductance:
.30 μH min to .55 μH MAX.
B. OCL (primary inductance) and ^LL
(leakage inductance) are
measured at the primary winding.
Turns ratio is specified primary:
secondary. (CT = Center Tap; CS =
Split Center Tap).
C. To make a 1CT:1 ratio from a 1CT:
2CT ratio, use only one half of
the secondary (2CT) winding.
Part
Number
PE-65839NL
PE-68646NL
PE-65389NL
PE-68826NL
PE-68836NL
Turns
Ratio 1
1:1
1:1.58
1:1
1:1
1:1
Secondary
Pins
3-5
3-5
3-5
2-3
2-3/5-6
Turns
Ratio 2
1:1.26
1:2
1:1.26
1:1.26
1:1.26
Secondary
Pins
1-5
1-5
1-5
1-3
1 3/4 - 6
D. For Reinforced 3 kVrms Dual SMT
Transformers, refer to data sheet
T617. For Octal SMT Transformers,
refer to data sheet T622.
E. Dual Ratio Transformers: These
transformers have tapped
secondary windings to provide
two turns ratios (T/R). Use the
entire primary winding and
connect
F. Standard packaging for surface
mount “AN” and “LA” packages
is ant-static tubes. Optional Tape
& Reel packaging can be ordered
by adding “T” suffix to the part
number (i.e. PE-68864NLT).
G. Safety Agency approvals
pending.
H. The turns ratio of these
devices have been designed, in
conjunction with semiconductor
vendor recommendations, to allow
connections to various terminations
(e.g 75 Ω or 120 Ω with the same
transformer). For 75 Ω termination,
the PEB 2235 requires the following
turns ratio: 1:1.57 (TX) and 1:1.26
(RX) which can be achieved using
pins (1-2):(15-16) for TX and (10-
11):(5-8) for RX. For 120 Ω, the
following turns ratio are required:
1:2 (TX) and 1:1 (RX), which are pins
(1-2):(16-14) for TX and (9-11):(5-8)
for RX.
Electrical Specifications @ 25°C - Operating Temperature 0°C to 70°C
Pulse Part Number
HIGH FREQUENCY COMMON MODE CHOKES, 4-LINES
Turns Ratio (±5%)
OCL (μH MIN)
PE-65554NL
1:1:1:1
24.0
PE-65555NL
1:1:1:1
8.0
PE-65854NL
1:1:1:1
47.0
PE-65857NL
1:1:1:1
24.0
Notes: For additional Common Mode Chokes, refer to data sheet G002
0
-5
PE-65555NL
-10
PE-65554NL
-15
PE-65857NL
-20
PE-65854NL
-25
-30
1 MHz
10 MHz
Frequency
4
Typical common mode attenuation ₃
for high-frequency common mode
chokes based on a 100 Ω system. 2
1
100 MHz
8
pulseelectronics.com
Package/Schematic
IN/1 (ThroughHole)
IN/1 (ThroughHole)
SH/1 (Surface Mount)
LA/2 (Surface Mount)
Schematics
1
2
876 5
5
6
7
8
1 23 4
T608.U (05/12)