Standard Products ACT4479D Dual Transceiver for H009 Specification www.aeroflex.com/Avionics October 1, 2008 FEATURES ❑ Dual transceiver meets McDonnell Douglas H009 data bus specifications ❑ Low standby power ❑ Low power dissipation at full output power ❑ Operates with ±12V to ±15 and +5V power supplies ❑ Monolithic construction using linear ASICs ❑ Packaging – Low profile metal hermetic - 0.78''W x 1.5''L x 0.180''H ❑ Designed for commercial, industrial and aerospace applications ❑ Aeroflex is a Class H & K MIL-PRF-38534 Manufacturer DESCRIPTION The Aeroflex Plainview transceiver model ACT4479D is a new generation monolithic transceiver which provides compliance with H009 data bus requirements with the lowest standby power consumption available using three DC power supplies operation. The dual channel ACT4479D performs the front-end analog function of inputting and outputting data through a transformer to a H009 data bus. Design of these transceivers reflects particular attention to active filter performance. This results in low bit and word error rate with superior waveform purity and minimal zero crossover distortion. The active filter design provides the required H009 low harmonic distortion waveform without increasing the pulse delay characteristics significantly. Efficient transmitter electrical and thermal design provides low internal power dissipation and heat rise at high and well as low duty cycles. The receiver input threshold is set internally. TRANSMITTER The Transmitter section accepts complementary TTL data at the input, and when coupled to the data bus with a 1:1 transformer, isolated on the transceiver side with two 34 Ohm bus terminating resistors, with the bus terminated by a 175 Ohm resistor, the data bus signal produced is 20VP-P nominal at A-A' (See Figure 5). When both DATA and DATA inputs are held low or high, the transmitter output remains a low impedance and signal is “removed” from the line. In addition, an overriding “INHIBIT" input returns the output to a high impedance state. A logic “1” applied to the “INHIBIT” takes priority over the condition of the data inputs and disables the transmitter (See Transmitter Logic Waveforms - Figure 1). The transmitter utilizes an active filter to suppress harmonics above 1 MHz to meet H009 specifications. The transmitter may be safely operated for an indefinite period at 100% duty cycle into a data bus short circuit. RECEIVER The Receiver section accepts bi-phase differential data at the input and produces two TTL signals at the output. The outputs are DATA and DATA, and represent positive and negative excursions of the input beyond a pre-determined threshold (See Receiver Logic Waveforms - Figure 2). The internal threshold is nominally set to detect data bus signals exceeding 2.0VP-P when used with a 1:1 turns ratio transformer (See Figure 5 for transformer data and typical connection). A low level at the Strobe input inhibits the DATA and DATA outputs (Pin is internally pulled up). SCD4479D Rev A TX DATA IN TX DATA IN TX INHIBIT VL +VCC -VEE GROUND 27 (20) 26 (19) DRIVER OUTPUT STAGE 2 (9) REFERENCE COMP. 5 (12) RECEIVE ACTIVE FILTER COMP. TX/RX TX/RX 25 (18) 24 (17) 28 (21) Channel A (B) 23 (16) 3 (10) 22 (15) 7 (Case) RX DATA OUT Channel A (B) INPUT AMP STROBE 1 (8) TRANSMIT ACTIVE FILTER 6 (13) RX DATA OUT 4 (11) 14 N/C BLOCK DIAGRAM (WITHOUT TRANSFORMER, CHANNEL A SHOWN) CHANNEL A (CHANNEL B) DATA DATA INHIBIT OUTPUT X X H High Z H H L L L L H L L L H L Low Z (No signal) Low Z (Signal) FIGURE 1A – TX OUTPUT TRUTH TABLE SCD4479D Rev A 10/1/08 Aeroflex Plainview 2 Region 1 2 3 4 1 DATA IN DATA IN INHIBIT LINE TO LINE OUTPUT Notes: 1. Data and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them, and in the same state during the off time (both high and low). 2. Region 1; no output signal, High Z state, (Receive Mode), Region 2; No Output signal, Low Z state, Region 3; Transmitter signal on, low Z (Transmitter mode), Region 4; No Output signal, Low Z state, (Terminate Mode). FIGURE 1B – TRANSMITTER LOGIC WAVEFORMS LINE TO LINE INPUT Rx DATA OUT Note overlap Rx DATA OUT FIGURE 2 – RECEIVER LOGIC WAVEFORMS SCD4479D Rev A 10/1/08 Aeroflex Plainview 3 ABSOLUTE MAXIMUM RATINGS Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150°C ±18 V Power Supply Voltages +7 V -0.3 V to +5.5 V Logic Input Voltage Receiver Differential Input ±40 V Receiver Input Voltage (Common Mode) ±10V 150 mA Driver Peak Output Current Total Package Power Dissipation over the Full Operating Case Temperature Range 3.6 Watts 18°C Maximum Junction to Case Temperature (100% duty cycle) 5°C/W Junction-Case, Thermal Resistance ELECTRICAL CHARACTERISTICS – DRIVER SECTION 1/ 2/ INPUT CHARACTERISTICS, TX DATA IN OR TX DATA IN Parameter Condition Symbol Min Typ Max Unit "0" Input Current VIN = 0.4V IILD - -0.2 -0.4 mA "1" Input Current VIN = 2.7V IIHD - 1 40 µA "0" Input Voltage - VILD - - 0.7 V "1" Input Voltage - VIHD 2.0 - - V "0" Input Current VIN = 0.4V IILI - -0.2 -0.4 mA "1" Input Current VIN = 2.7V IIHI - 1.0 40 µA "0" Input Voltage - VILI - - 0.7 V "1" Input Voltage - VIHI 2 - - V Delay from TX inhibit, (0➝1) to inhibited output - tDXOFF - 300 500 nS Delay from TX inhibit, (1➝0) to active output - tDXON - 200 400 nS Differential Output Noise, inhibit mode - VNOI - 2 10 mVp-p Differential Output Impedance (inhibited) 4/ ZOI 10K - - Ω Point A - A' VO 16 20 24 V p-p Rise and Fall Times (10% to 90% of p-p output) - tR & tF 200 260 300 nS Output Offset, Figure4 5/ Point A - A' VOS - - ±260 mV peak - tDTX - 280 400 nS INHIBIT CHARACTERISTICS OUTPUT CHARACTERISTICS Differential output level (175Ω) Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal (Note 1) SCD4479D Rev A 10/1/08 Aeroflex Plainview 4 ELECTRICAL CHARACTERISTICS – RECEIVER SECTION 1/ 2/ Parameter Differential Voltage Range 3/ Common Mode Rejection Ratio 3/ Condition Symbol Min Typ Max Unit Point A-A' VIDR - - 20 VPEAK - CMRR 45 - - dB STROBE CHARACTERISTICS (Logic '0' Inhibits Output) (NOTE: If not used, a 1K pullup to 5V is recommended) "0" Input Current VS = 0.4V IIL - -0.2 -0.4 mA "1" Input Current VS = 2.7V IIH - 1 +40 µA "0" Input Voltage - VIL - - 0.7 V "1" Input Voltage - VIH 2.0 - - V Strobe Delay (turn-on or turn-off) - tSD(ON/OFF) - 90 150 nS VTH 1.5 2.0 3.0 VP-P THRESHOLD CHARACTERISTICS (Sinewave Input ) Internal Threshold Voltage, Point A-A' Figure 5 1MHz OUTPUT CHARACTERISTICS, RX DATA AND RX DATA "1" State IOH = -0.4mA VOH 2.5 3.6 - V "0" State IOL = 4mA VOL - 0.35 0.5 V Delay, (average) from differential input zero crossings to RX DATA and RX DATA output 6/ 50% points tDRX - 300 450 nS POWER SUPPLY CURRENT PER CHANNEL 1/ 2/ VCC = +12V to +15V, VEE = -12V to -15V, VL = +5V Duty Cycle Condition Symbol Typ Max Unit Point A - A' ZO = 175Ω, VO = 21VP-P Figure 5 ICC IEE IL 6 15 22 10 25 30 mA 25% ICC IEE IL 25 36 22 35 45 30 50% ICC IEE IL 34 45 22 45 55 30 100% ICC IEE IL 49 60 22 60 70 30 Transmitter Standby Notes: 1. VCC = +15Volts ±0.75V, VEE = -15Volts ±0.75V, VIL = +5Volts ±0.5V, Tc = -55°C to +125°C, unless otherwise specified. 2. All typical values are measured at +25°C. 3. Characteristics guaranteed by design, not production tested. 4. Power ON/OFF, measured 1MHz at Point A-A' Figure 4. 5. At point A-A' on Figure 4 or 5, 2.5 µS after midpoint crossing of the parity bit of the last word. 6. This test is peformed while the Transceiver is reading its own transmission. This condition is called "Wraparound". Standard TTL loads applied to RX DATA Outputs. SCD4479D Rev A 10/1/08 Aeroflex Plainview 5 Last Bit Magnified View Output Offset* 0 Volts Output Offset* 2.5 µsec *Offset measured at point A-A’ in Figure 5 FIGURE 4 – TRANSMITTER (TX) OUTPUT OFFSET 34Ω N1:N2 TX/RX DATA OUT B A 175Ω B' TX/RX DATA OUT A' 34Ω Transformer: Turns ratio: N1:N2 = 1:1 Use MIL-PRF-21038/27-1 or Technitrol 1553-1 ACT4479D, CH A FIGURE 5 – TYPICAL TRANSFORMER CONNECTION 3.6 POWER DISSIPATION MILLIWATTS 3.2 2.8 2.4 Maximum 2.0 1.6 1.2 Typical .8 .4 0 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE – PERCENT Note: Vcc = +15VDC, VEE = -15VDC, VBUS (Point A-A') at 21VP-P FIGURE 6 – PACKAGE (PWRIN - PWRLOAD) POWER DISSIPATION vs DUTY CYCLE (Total Hybrid with one channel transmitting and the other in standby) SCD4479D Rev A 10/1/08 Aeroflex Plainview 6 FIGURE 7 – LEAD NUMBERS & FUNCTIONS Pin # Function Channel 1 TX DATA OUT/ RX DATA IN A 2 TX DATA OUT/ RX DATA IN A 3 GROUND A 4 RX STROBE A 5 RX DATA OUT A 6 RX DATA OUT A 7 CASE - 8 TX DATA OUT/ RX DATA IN B 9 TX DATA OUT/ RX DATA IN B 10 GROUND B 11 RX STROBE B 12 RX DATA OUT B 13 RX DATA OUT B 14 NC - 15 GROUND B 16 -VEE B 17 VL B 18 TX INHIBIT B 19 TX DATA IN B 20 TX DATA IN B 21 +VCC B 22 GROUND A 23 -VEE A 24 VL A 25 TX INHIBIT A 26 TX DATA IN A 27 TX DATA IN A 28 +VCC A SCD4479D Rev A 10/1/08 Aeroflex Plainview 7 CONFIGURATIONS AND ORDERING INFORMATION Model No. Screening DESC SMD Receiver Data level Case ACT4479-D Military Temperature, -55°C to +125°C Screened in accordance with MIL-PRF-38534, Class H Pending Normally Low Plug-In ACT4479-DI ACT4479-DF Normally High Normally Low ACT4479-DFI Normally High ACT4479-D-7 Commercial flow, +25°C testing only NA Normally Low ACT4479-DI-7 Normally High ACT4479-DF-7 Normally Low ACT4479-DFI-7 Normally High Flat Pack Plug-In Flat Pack PACKAGE CONFIGURATION OUTLINE Flat Package Plug-In Package .180 MAX. .072 1.500 MAX. .015 28 0.780 MAX. 1.480 MAX. 28 15 0.780 MAX. 15 0.600 14 Pin 1 & ESD Designator Lead 1 & ESD Designator 14 0.210 MAX. .250 .400 MIN. .100 .010 .018 .100 1.300 (13 Equal Spaces at .100) 1.300 (13 Equal Spaces at .100) Notes 1. Dimensions shown are in inches 2. Pins are equally spaced at 0.100±0.002 tolerance, non-cumulative, each row PLAINVIEW, NEW YORK Toll Free: 800-THE-1553 Fax: 516-694-6715 INTERNATIONAL Tel: 805-778-9229 Fax: 805-778-1980 NORTHEAST Tel: 603-888-3975 Fax: 603-888-4585 SE AND MID-ATLANTIC Tel: 321-951-4164 Fax: 321-951-4254 WEST COAST Tel: 949-362-2260 Fax: 949-362-2266 CENTRAL Tel: 719-594-8017 Fax: 719-594-8468 www.aeroflex.com [email protected] Aeroflex Microelectronic Solutions reserves the right to change at any time without notice the specifications, design, function, or form of its products described herein. All parameters must be validated for each customer's application by engineering. No liability is assumed as a result of use of this product. No patent licenses are implied. Our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused SCD4479D Rev A 10/1/08 8