ARX4810 & 4810FP Universal Dual Transceivers for MIL-STD-1553 & MACAIR A3818, A5690, A5232 & A4905 Features • World’s smallest dual "Universal Transceiver" 0.3" X 1.2" Package • Dual transceiver meets military data bus requirements, MIL-STD-1553 and Macair specs • Low power dissipation at full output power • +5 / -15 Volt Power Supply Operation • Voltage source output for higher bus drive power • Monolithic construction using linear ASICs • Processed and screened to MIL-STD-883 specs • MIL-PRF-38534 Compliant Devices Available • DESC SMD (Standard Military Drawing) E X0 L F 1 9 O 4 8837 R X 8 A EA R SAU ARX4810 Dual Universal Transceiver TX/RX TX DATA IN DRIVER SHAPING OUTPUT STAGE REFERENCE COMP. TX DATA IN TX/RX TX INHIBIT +5 V RX DATA OUT CIRCUIT TECHNOLOGY www.aeroflex.com General Description The Aeroflex Circuit Technology Models ARX4810 and ARX4810FP are new generation monolithic transceivers which provide full compliance with MIL-STD-1553 and Macair data bus requirements in the smallest packages with low power consumption and two power supply operation. The dual channel Model ARX4810 and Model ARX4810FP perform the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553 or Macair 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. Efficient transmitter electrical and thermal design provides low internal power dissipation and heat rise at high as well as low duty cycles. Each channel of the dual transceiver is completely separate from the other and fully independent. This includes power leads as well as signal lines. Hence, each channel may be connected to a different data bus with no interaction. Transmitter -15 V to -12V GROUND INPUT AMP ACTIVE FILTER COMP. RX DATA OUT STROBE Block Diagram (without transformer), 1/2 of unit shown The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:1 transformer, isolated on the data bus side with two 52.5 Ohm fault isolation resistors, and loaded by two eroflex Circuit Technology – Data Bus Modules For The Future © SCD4810 REV B 8/12/98 70 Ohm terminations plus additional receivers, the data bus signal produced is 7.5 volts nominal P-P at A-A’. (See Figure 5) When both DATA and DATA inputs are held low or high, the transmitter output becomes a high impedance and is “removed” from the line. In addition, an overriding “INHIBIT input provides for the removal of the transmitter output from the line. A logic “1” applied to the “INHIBIT” takes priority over the condition of the data inputs and disables the transmitter. (See Transmitter Logic Waveform, Figure 1.) The transceiver utilizes an active filter to suppress harmonics above 1 MHz to meet Macair specifications A-3818, A-4905, A-5232 and A-5690. The Transmitter may be safely operated at 100% duty cyclefor an indefinite period into a short circuited, the 1553 or Macair bus. The pre-set internal thresholds will detect data bus signals exceeding 1.150 Volts P-P and reject signals less than 0.6 volts P-P when used with a 1:1 turns ratio transformer. (See Figure 5 for transformer data and typical connection.) 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 Waveform Figure 2). Figure 1 – Transmitter Logic Waveforms 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. 2. DATA and DATA must be in the same state during off time (both high or low). Figure 2 – Receiver Logic Waveforms LINE TO LINE INPUT DATA OUT DATA OUT Note overlap NOTE: Waveforms shown are for normally low devices. For normally high receiver output ,level devices,the receiver outputs are swapped as shown by the dashed lines. Aeroflex Circuit Technology 2 SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 Absolute Maximum Ratings Operating case temperature -55°C to +125°C Storage case temperature -65°C to +150 °C Negative Power supply Voltage -15 V P.S. to -18V MAX Positive Power Supply Voltage -0.3 V to +5.5 V Receiver differential input ±10 V Receiver input voltage (common mode) ±5 V Driver peak output current 300 mA Total package power dissipation over the full operating case temperature rise 4 Watts (Note. Normal operation conditions require one transmitter on and the other off at any given time, with a maximum dissipation of 3.2 watts.) Maximum junction to case temperature rise for the hottest device 6° C Thermal resistance for the hottest device, junction to bottom of case 3° C/W Electrical Characteristics, Driver Section Input Characteristics, TX DATA in or TX DATA in Parameter Condition Symbol Min Typ Max Unit "0" Input Current VIN = 0.4 V IILD -0.25 -0.4 mA "1" Input Current VIN = 2.7 V IIHD 1 40 µA 0.7 V "0" Input Voltage VIHD "1" Input Voltage VIHD 2.0 V Inhibit Characteristics "0" Input Current VIN = 0.4V IILI -0.25 -0.4 mA "1" Input Current VIN = 2.7V IIHI 1.0 40 µA 0.7 V "0" Input Voltage VILI "1" Input Voltage VIHI 2 V Delay from TX inhibit,(0→1) to inhibited output Note 1 tDXOFF 240 350 nS Delay from TX inhibit, (1→0) to active output Note 1 tDXON 210 350 nS VNOI 2 10 mV p-p Differential output noise, inhibit mode Differential output impedance (inhibited) Note 2 Ω ZOI 7K VO 6 6.8 7.7 V p-p tR 200 240 300 nS ±90 mV peak 350 nS Note 1. Characteristics guaranteed by design, not production tested . Output Characteristics Differential output level RL = 35Ω Rise and fall times (10% to 90% of p-p output) Output offset at point A-A’ on Fig 5., 2.5 µS after midpoint crossing of the parity bit of the last word of a 660µS message Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal RL = 35Ω VOS Note 1 tDTX 260 Note 2. Measured at 1MHz from bus side of transformer after contribution from transformer is accounted for. Aeroflex Circuit Technology 3 SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 Electrical Characteristics, Receiver Section Parameter Condition Sym Min f = 1MHz ZIN 20K Differential Input Impedance Differential Voltage Range Typ Max Unit Ω VIDR ±4 V peak Input Common Mode Voltage Range Note 1 VICR ±2.5 V peak Common Mode Rejection Ratio Note 3 Note 1 CMRR 40 dB Strobe Characteristics (Logic "O" inhibits output) if not used, a 1K pullup to 5 V is recommended "0" Input Current VS = 0.4 V IIL -0.25 "1" Input Current Vs = 2.7V IIH 1 "0" Input Voltage VIL "1" Input Voltage VIH Strobe Delay (turn-on or turn-off) Note 1 tSD 100KHz-1MHz VTH -0.4 mA +40 µA 0.7 V 2.0 V 10 78 nS 0.60 0.8 1.15 VP-P 2.5 3.4 Threshold Characteristics (Sinewave input ) Input Threshold Voltage (referred to the bus) Output Characteristics, RX DATA and RX DATA "1" State IOH = -0.4 mA VOH "0" State IOL = 4 mA VOL 0.3 0.5 V tDRX 280 450 nS Delay, (average) from differential input zero crossings to RX DATA and RX DATA output 50% points V Power Data Maximum Currents, per channel (Power supplies used are -15V, and +5V) Duty Cycle -V +V and Logic Transmitter Standby 42 mA 48 mA 25% duty cycle, Note 1 85mA 90 mA 105 mA 110 mA 140 mA 145 mA 50% duty cycle 100% duty cycle, Note 1 Power supply Voltages -V -14.25 Volts to -15.75 Volts Logic and +V 4.5 Volts to 5.5 Volts Note 3. Measured at the bus side of the transformer, including the contribution from the transformer. Note 4. Vcc= 5 Volts ±0.1 V, for all measurements unless otherwise specified. Note 5. Specifications apply over the case temperature range of -55°C to +125°C unless otherwise specfied. Note 6. All typical values are measured at +25°C Note 7. A 1uf, 10 Volt capacitor is required on the TX/RX terminal for each transceiver as shown in Figure 5. A Sprague 194D type (.05" W x .10" L x .05" H ) is suggested. Aeroflex Circuit Technology 4 SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 Figure 3 – Transmitter (TX) Output Wave form Figure 4 – Transmitter (TX) Output offset LAST BIT tf* 90% Magnified View * OUTPUT OFFSET 6.5V P-P MIN 8.5V P-P MAX 0 Volts 0 volts * OUTPUT OFFSET 10% 2.5 µsec tr* *Offset measured at point A-A’ in Fig 5 * Rise and fall times measured at point A-A’ in Fig 5 Figure 5 – Typical Transformer connection 70Ω 70Ω 1uf, 10 V + 4.0 52.5Ω N1:N2 B POWER DISSIPATION WATTS TX DATA OUT Figure 6 – Power Dissipation vs. Duty Cycle (per channel) A D.U.T N1:N3 for stub coupling Ctr tap B’ A’ TX DATA OUT 52.5Ω RX DATA IN RX DATA IN 3.5 3.0 2.5 TYPICAL 2.0 1.5 1.0 0.5 Transformer turns ratios: N1:N2 = 1:1 N1:N3 = 1:0.71 Use Aeroflex 25T1553-1 0 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE, PERCENT Configurations and Ordering Information Model No. DESC No. Receiver Data level Case Configuration 5962-TBA Normally High Plug-In Dual ARX4810-201-1 5962-9550501HXC Normally High Flat Pkg (.175 Lead) Dual ARX4810-201-2 5962-9550501HXA Normally High Flat Pkg (.175 Lead) Dual ARX4810-201-3 5962-9550501HXA or C Normally High Flat Pkg (.175 Lead) Dual ARX4810-203-1 5962-9550501HYC Normally High Flat Pkg (.300 Lead) Dual ARX4810-203-2 5962-9550501HYA Normally High Flat Pkg (.300 Lead) Dual ARX4810-203-3 5962-9550501HYA or C Normally High Flat Pkg (.300 Lead) Dual ARX4811 5962-TBA Normally Low Plug-In Dual ARX4811-2 5962-TBA Normally Low Flat Package Dual ARX4810 Aeroflex Circuit Technology 5 SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 CIRCUIT TECHNOLOGY Package Dimensions and Pin Outs Flat Package 1.200 MAX 1.000 10 Equal Spaces @.100 .140 MAX .065 ±.015 .030 ±.010 .310 MAX .175 or .300 MIN MIN .040 .010 ±.002 TYP .018 ±.002 DIP Package .170 MIN 1.200 MAX 1.000 10 Equal Spaces @.100 .140 MAX .310 MAX .300 ±.010 Notes 1. Dimensions shown are in inches Pin Numbers & Functions Pin # Function Channel 1 INHIBIT A 2 TX DATA IN A 3 TX DATA IN A 4 STROBE A 5 GROUND A 6 RX DATA OUT B 7 RX DATA OUT B 8 TX / RX B 9 TX / RX B 10 -15V B 11 +5V B 12 INHIBIT B 13 TX DATA IN B 14 TX DATA IN B 15 STROBE B 16 GROUND B 17 RX DATA OUT A 18 RX DATA OUT A 19 TX / RX A 20 TX / RX A 21 -15V A 22 +5V A Specifications subject to change without notice. Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800) THE-1553 Aeroflex Circuit Technology 35 South Service Road Plainview New York 11830 Aeroflex Circuit Technology 6 SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700