CT2581 Aeroflex Circuit Technology, CT2581 Datasheet - Page 16

• Manufacturer Part Number: CT2581
• Description: Ct2578 / Ct2581 Simple Remote Terminal For Mil-std-1553 / 1760 & Mcair
• Manufacturer: Aeroflex Circuit Technology

1. Rising edge of NCMDSTRB to falling 0.5
2. NSSTRB to next NSSTRB
3. Rising edge of C1MHZ to falling edge
4. Falling edge of C1MHZ to rising edge
5. Falling edge of NSSTRB to data enabled
6. Rising edge of NSSTRB to data disabled
C1MHZ
T0-T15
1. Rising edge of NCMDSTRB to falling 225
2. NDATAST to next NDATAST
3. NDATAST pulse duration
4. Data valid on T0-T15 to NDATAST
5. NDATAST to data invalid on T0-T15 100
T0-T15
T0-T15
1. NRES/NSYNC pulse duration
2. T0-T15 valid to NSYNC
3. NSYNC to T0-T15 invalid
4. NVCR to NRES/NSYNC non bcast
5. NENVW to T0-T15 valid
6. NENVW to T0-T15 invalid
7. NENVW is reset by NVCR
NCMDSTRB
NDATAST
NRES/NSYNC
NENVW
edge of first NSSTRB
of NSSTRB
of NSSTRB
onto T0-T15 from subsystem
onto T0-T15 from subsystem
edge of first NDATAST
NVCR to NRES/NSYNC bcast
SCDCT2578 REV B 3/11/98
2
1
4
5
2
6
1
MIN MAX UNIT
MIN MAX UNIT
MIN MAX UNIT
475
50
250
27.9 28.1
8.9
500
100
1.0 16.0
475 525
225 275
3
10.0
525
9.1
250
275
75
75
75
75
3
5
nS
nS
nS
uS
uS
nS
nS
uS
uS
nS
nS
nS
nS
nS
nS
nS
nS
nS
16
16 MHZ CLOCK REQUIREMENT
TRANSFORMERS
The device requires a 1:2.5 turns ratio for direct coupling and
1:1.79 turns ratio for transformer coupling. The centre tap of the
transformers must be tied to ground.
The suggested transformer are:-
Technitrol 1553-45
Aeroflex
NDATA
NDATA
T
DATA
DATA
25T1553-45
P’
P
MIN
40%
Transformer coupled
1:1.79
1:2.5
Direct coupled
MAX
60%
1:1.4
of cycle
0.75Zo
0.75Zo
0.75Zo
0.75Zo
A’
A
Zo