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 www.aeroflex.com 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 eroflex Circuit Technology – Data Bus Modules For The Future © SCDCT1508 REV A 3/22/00 Aeroflex Circuit Technology 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 Aeroflex Circuit Technology 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 Aeroflex Circuit Technology 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. Aeroflex Circuit Technology 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. Aeroflex Circuit Technology 6 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 Aeroflex Circuit Technology 7 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