AEROFLEX CT1508-2

CT1508-2
MIL-STD-1397 Type E 10MHz
Serial Manchester 4-Bit SIS / SOS Decoder
Features
Unique Manchester decoder requires no clock
CIRCUIT TECHNOLOGY
4 Bit SIS / SOS output
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Operates with ±5 volt supply
Removes sync, word identifier and parity bits
EX L A
FL
Does both data and SIS / SOS decoding
Detects parity on all received data
Flags received messages with word lengths greater than 4 bits
Accepts self-test inputs for BITE applications
C
Generates one clock edge per received bit for bit counting applications
E
RTIFIED
May be used as a serial decoder for indefinite word lengths
Interfaces directly to the CT1496-2 (Manchester Encoder) and CT1469-2 (Transceiver)
MIL-PRF-38534 compliant devices available
I NC .
ISO
9001
S
A E RO
B
General Description
CT1508-2 is a hybrid microcircuit which incorporates a serial decoder in a single package. The encoder accepts a "N"
Bit (Typically 4, 34 or 35) serial Manchester encoded TTL NRZ signals and outputs a 4 bit SIS / SOS TTL output along
with "N" recovered data Bits/Clocks. Aeroflex Circuit Technology is a 80,000 square foot MIL-PRF-38534 certified
facility in Plainview, N.Y.
Master
Reset
DATAst
DATA
DATA
Data
Reconstruct
Manchester
Decoder / Clock
Regenerator
DATAr
CLOCKr
DATAst
Gnd
-5V
VEE
Transmission
Envelope
Data
VCC
Counter
SIS / SOS
False
Sync
+5V
C/I
4 Bit
SIS / SOS
Register
Bit 4
•
•
•
•
•
•
•
•
•
•
•
•
SIS / SOS Output
TP1 TP1 TP1 TP1
Test Points
Block Diagram
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1ST Data
Bit
2ND Data
Bit
3RD Data
Bit
4TH Data
Bit
5TH Data
Bit
VIH
PW1
RX Data
VIL
T2
T1
VIH
PW2
RX Data
VIL
T3
T5
VOH
Transmission
Envelope
VOL
T6
2
VOH
VOL
DataR
T7
T4
ClockR
VOH
T9
SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700
SIS / SOS
False
T10
T11
VOL
3V
0V
3V
PW3
0V
Master Reset
Figure 1 – Decoder Timing Waveforms
Absolute Maximum Ratings
Parameter
Rating
Units
+7.0
-7.0
V
V
Input Voltage
+0.5 to +5.5
V
Applied Output Voltage
-0.5 to +7.0
V
2.17
W
Storage Temperature Range
-60 to +150
°C
Operating Case Temperature Range
-55 to +100
°C
Supply Voltage
VCC
VEE
Power Dissipation
DC Electrical Characteristics
(VDD = 5V ±10%, TC = -55 °C to +100°C, unless otherwise specified)
SYMBOL
PARAMETER
LIMIT
SIS / SOS False & SIS / SOS Outputs
VOH
Logic High Output Voltage
2.4V min @ IOH = -50µA, VCC = +4.5V
VOL
Logic Low Output Voltage
0.4V max @ IOL = 2mA, VCC = +4.5V
Clockr & Datar
VOH
Logic High Output Voltage
2.4V min @ IOH = -150mA, VCC = +4.5
VOL
Logic Low Output Voltage
0.4V max @ IOL = 6mA, VCC = +4.5V
Transmission Envelope
VOH
Logic High Output Voltage
2.4V min @ IOH = -200mA, VCC = +4.5V
VOL
Logic Low Output Voltage
0.4V max @ IOL = 8mA, VCC = +4.5V
RX DATA, RX DATA, DATAst, DATAst & Master Reset
IIH
Logic High Input Current
50µA max @ VIH = 2.7V, VCC = +5.5V
IIL
Logic Low Input Current
2mA max @ VIL = 0.4V, VCC = +5.5V
DC Supply Currents
ICC
VCC = +5.5V (pin 1)
360mA max
IEE
VEE = -5.5V (pin 9)
35mA max
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3
SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700
Decoder Timing Characteristics
(VCC = 5V ±10%, T C = -55 °C to +100°C, See Figure 1, unless otherwise specified)
Symbol
Parameter / Condition
Min
Typ
Max
Unit
T1
Bit transition 0 - 0, 1 - 1
35
60
65
ns
T2
Bit transition 0 - 1, 1 - 0
90
100
130
ns
T3
Transmission envelope off delay
100
-
250
ns
T4
ClockR low time
35
50
65
ns
T5
Envelope delay time
-
25
40
ns
T6
Data decode delay
-
35
45
ns
T7
Clock low transition delay
-
50
-
ns
T8
Word Parity Delay
-
120
-
ns
T9
ClockR low time
35
50
65
ns
T10
SIS / SOS false delay time
-
40
80
ns
T11
minimum reset disable time
20
-
-
ns
PW1
Half Bit input pulse
20
50
65
ns
PW2
Full Bit input pulse
90
100
130
ns
PW3
Master reset pulse width
60
-
-
ns
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4
SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700
Functional Description and Pinout
Pin
#
Pin Name
1
VCC
+5V ± 10%
-
9
VEE
-5V ± 10%
-
2
RX DATA
Connect to DATA output of RX
1 S Load
4
RX DATA
Connect to DATA output of RX
1 S Load
3
DATAST
Connect to DATAST output of encoder
1 S Load
6
DATAST
Connect to DATAST output of encoder
1 S Load
14
Transmission
Envelope
High within approximately 40nSec of reception
of first half bit; goes low approximately 100nSec
after reception of last half bit (normally low in
inactive state).
4 S Drives
19
SIS / SOS False
Reset to low state on clear. Goes high
reception of transmission with word length
greater than 4 bits.
1 S Drive
20
21
22
24
SIS / SOS Output
(Pin 24 - LSB)
(Pin 20 - MSB)
Last 4 bits received reside in this register until
cleared. If valid SIS / SOS then register contains
SIS / SOS message.
1 S Drive
17
DataR
Reconstructed Data. Data state to be
considered in conjunction with positive edges of
ClockR.
8
ClockR
Reconstructed Clock (approximately 50% duty
cycle) to be used in conjunction with
Reconstructed Data and maybe used for bit
counting applications.
7
Master Reset
Clears all data registers, bit counter, WORD
PARITY on low. Must be used after each word
to initialize bit counter and parity detector.
11
TP1
Do not connect.
15
TP2
Do not connect.
16
TP3
Do not connect.
13
TP4
Do not connect.
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Function
5
Load or
Drive
SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700
Functional Description and Pinout (con’t)
Pin
#
Pin Name
Function
Load or
Drive
General Notes:
1 S Load: Requires IIL = 2 mA Max. IIH = 50 µA Max. CIN <15pF
1 S Drive: Requires IOH = 50 µA Min. IOL = 2 mA Min.
Thruput Delay - 150 nSec Max to serial outputs
Power Dissipation
1.38 Watts Typ +5V ±10% 250 mA Typ, 360 mA Max.
2.17 Watts Max. -5V ±10% 25 mA Typ, 35 mA Max.
Power Sequence is not required.
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SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700
Pin #’s
Functions
Pin #’s
1
Vcc (+5V)
31
NC
2
DATA
32
NC
3
DATA ST
33
NC
4
DATA
34
NC
5
GND
35
NC
6
DATA ST
36
NC
7
MASTER RESET
37
NC
8
CLOCK R
38
NC
9
VEE (-5V)
39
NC
10
GND
40
NC
11
TP1
41
NC
12
GND
42
NC
13
TP4
43
NC
14
TRANSMISSION ENVELOPE
44
NC
15
TP2
45
NC
16
TP3
46
NC
17
DATA R
47
NC
18
GND
48
NC
19
SIS / SOS FALSE
49
NC
20
BIT 4
50
NC
21
C/I
51
NC
22
DATA (SIS/SOS)
52
NC
23
GND
53
NC
24
SYNC
54
NC
25
NC
55
NC
26
NC
56
NC
27
NC
57
NC
28
NC
58
NC
29
NC
59
NC
30
NC
60
NC
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Functions
SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700
CIRCUIT TECHNOLOGY
Ordering Information
Model Number
Package
CT1508-2
Flat Package
Flat Package Outline
1.590 MAX
1.450
(30 Leads/Side on .050 centers)
.175 MAX
1.015
MAX
Lead 1 & ESD
Designator
.450
MIN
.015 ±.003
.010 ±.002
.050 TYP
Specifications subject to change without notice.
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
Aeroflex Circuit Technology
Telephone: (516) 694-6700
FAX:
(516) 694-6715
Toll Free Inquiries: 1-(800)THE-1553
8
SCDCT1508 REV A 3/22/00 Plainview NY (516) 694-6700