Standard Products ACT4480-DFI Dual Transceiver for H009 Specification www.aeroflex.com/avionics February 27, 2013 FEATURES □ Dual transceiver meets McDonnell Douglas H009 data bus specifications □ Operates with ±12V to ±15 and +5V power supplies □ Monolithic construction using linear ASICs □ Packaging – Low profile ceramic - 0.60''W x 0.80''L x 0.14''H □ Designed for commercial, industrial and aerospace applications □ Full MIL-PRF-38534 qualification pending DESCRIPTION The Aeroflex Plainview transceiver model ACT4480-DFI is a new generation monolithic transceiver which provides compliance with H009 data bus requirements using three DC power supplies operation. The dual channel ACT4480-DFI 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 2). The transmitter utilizes an active filter to suppress harmonics above 1MHz 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 3). 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). SCD4480-DFI ABSOLUTE MAXIMUM RATINGS Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150°C ± 18V Power Supply Voltages + 7V -0.3V to +5.5V Logic Input Voltage Receiver Differential Input ± 40V Receiver Input Voltage (Common Mode) ± 10V Driver Peak Output Current 15mA 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 1/ 1/ It is recommended this hybrid be heat sunk to lower case temperature so the junction temperature never exceeds 135°C. 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 = 2.7 V 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 - 200 500 nS Delay from TX inhibit, (1→0) to active output - tDXON - 150 400 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 - tR & tF 200 260 300 nS Point A - A' VOS - - ± 260 mV peak - tDTX - 280 400 nS INHIBIT CHARACTERISTICS OUTPUT CHARACTERISTICS Differential output level (175Ω) Rise and Fall Times (10% to 90% of p-p output) Output Offset, Figure 4 5/ Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal 1/ SCD4480-DFI Rev B 2/27/2013 2 Aeroflex Plainview ELECTRICAL CHARACTERISTICS – RECEIVER SECTION 1/ 2/ Parameter Condition Symbol Min Typ Max Unit Differential Voltage Range 3/ Point A - A' VIDR - - 20 VPEAK Common Mode Rejection Ratio 3/ - CMMR 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 Unit POWER SUPPLY CURRENT VCC = +12V to +15V, VEE = -12V to -15V, VL = +5V Duty Cycle Transmitter Standby 50% Condition Symbol Typ Max Point A - A' ZO = 175Ω, VO = 21VP-P ICC IEE IL 12 30 32 20 50 40 Figure 5 ICC IEE IL 52 70 32 66 90 40 ICC IEE IL 95 112 32 120 130 40 100% mA Notes: 1. VCC = +15Volts ± 0.75V, VEE = -15Volts ± 0.75V, VIL = +5 Volts ± 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, 2.5µS after midpoint crossing of the parity bit of the last word. 6. This test is performed while the Transceiver is reading its own transmission. This condition is called "Wraparound". Standard TTL loads applied to RX DATA Outputs. SCD4480-DFI Rev B 2/27/2013 3 Aeroflex Plainview BLOCK DIAGRAM (WITHOUT TRANSFORMER, CHANNEL A SHOWN) CHANNEL A (CHANNEL B) SCD4480-DFI Rev B 2/27/2013 4 Aeroflex Plainview 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 1 – TX OUTPUT TRUTH TABLE 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 2 – TRANSMITTER LOGIC WAVEFORMS SCD4480-DFI Rev B 2/27/2013 5 Aeroflex Plainview FIGURE 3 – RECEIVER LOGIC WAVEFORMS *Offset measured at point A-A’ in Figure 5 FIGURE 4 – TRANSMITTER (TX) OUTPUT OFFSET SCD4480-DFI Rev B 2/27/2013 6 Aeroflex Plainview FIGURE 5 – TYPICAL TRANSFORMER CONNECTION SCD4480-DFI Rev B 2/27/2013 7 Aeroflex Plainview Dimensions shown are in inches. FIGURE 6 – PACKAGE CONFIGURATION OUTLINE SCD4480-DFI Rev B 2/27/2013 8 Aeroflex Plainview Pin# Function Channel 1 A_TXOUT / RXIN A 2 A_TXOUT_L / RXIN_L A 3 VCC - 4 A_RX_STROBE A 5 A_RXOUT A 6 A_RXOUT_L A 7 A_GND A 8 NO CONNECTION - 9 B_DIGITAL_GND B 10 B_TX_INHIBIT B 11 B_TX_IN_L B 12 B_TX_IN B 13 B_TXOUT/RXIN B 14 B_TXOUT_L / RXIN_L B 15 B_RX_STROBE B 16 B_RXOUT B 17 B_RXOUT_L B 18 B_GND B 19 VEE - 20 A_DIGITAL_GND A 21 VL - 22 A_TX_INHIBIT A 23 A_TX_IN_L A 24 A_TX_IN A FIGURE 7 - LEAD NUMBERS & FUNCTIONS SCD4480-DFI Rev B 2/27/2013 9 Aeroflex Plainview ACT4480 Power Dissipation Total Power Input The ACT4480-DFI uses ±15 Volt supplies and a +5 Volt supply. Total Input Power: Channel A transmitting, Channel B in standby Conditions CH_A: Transmitting at 30vpk-pk into a 243Ω load resistance. CH_B: Standby (Receive mode, Transmitter inhibited) Supply Voltages Supply Current (100% Duty Cycle) Power +15 Volts 76mA 1.140 Watts -15 Volts 93mA 1.395 Watts +5 Volts 33mA 0.165 Watts Total Power 2.700 Watts Total Input Power: Channel A and Channel B in standby Conditions CH_A: Standby (Receive mode, Transmitter inhibited) CH_B: Standby (Receive mode, Transmitter inhibited) +15 Volts Supply Current (100% Duty Cycle) 12mA 0.180 Watts -15 Volts 30mA 0.450 Watts +5 Volts 31mA 0.155 Watts Supply Voltages Total Power Power 0.785 Watts Load Power (measured) VSECONDARY: 30.0Vpk-pk, line to line, measured across RLoad RLoad: 34 + 34 + 175 = 243 Ω ISECONDARY: 15.0Vpk / 243 Ohms = 61.73mApk Instantaneous Power: 15.0V * 61.73mA = 926mWatts (960mW measured) Average Power Total Hybrid Power Dissipation: = 569mW 2.7W – 569mW Θjc = 2.131 Watts = 3.02°C/W (Calculated) Junction Temperature Rise over Case CH_A Die Transmitting = 2.131 x 3.02°C/W = 6.40°C Junction Temperature Rise over Case CH_B Die Standby SCD4480-DFI Rev B 2/27/2013 10 = 0.785 x 3.02°C/W = 2.37°C Aeroflex Plainview CONFIGURATIONS AND ORDERING INFORMATION DESC SMD Receiver Data level Model No. Screening ACT4480-DFI-7 Commercial flow, +25°C testing only N/A Normally High Flat Pack ACT4480-DFI Military Temperature, -55°C to +125°C Screened in accordance with the individual Test Methods of MIL-STD-883 for Military Applications. Pending Normally High Flat Pack 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 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. SCD4480-DFI Rev A 2/6/2013 Case Our passion for performance is defined by three attributes represented by these three icons: Solution-minded, performance-driven and customer-focused. 11