Standard Products ACT4433 Dual Transceivers for MIL-STD-1553 / MIL-STD-1760 & SAE-AS15531 www.aeroflex.com/Avionics February 18, 2005 FEATURES ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Small size, light weight and low power dissipation dual transceiver Smaller Case Outline then ACT4489D Bipolar supply ±12V, Logic supply +5V Outstanding MIL-STD-1553 / MIL-STD-1760 / SAE-AS15531 performance Monolithic construction Designed for commercial, industrial and aerospace applications MIL-PRF-38534 compliant devices available Aeroflex-Plainview is a Class H & K MIL-PRF-38534 manufacturer GENERAL DESCRIPTION The Aeroflex-Plainview ACT4433 is a next generation monolithic transceiver design which provides full compliance to MIL-STD-1553A/B and 1760 requirements in a small package with lower pin count then the ACT4489D, for those designs with less board space. The dual channel Model ACT4433 performs the front-end analog function of inputting and outputting data through a transformer to the MIL-STD-1553 data bus. Design of this transceiver 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 The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:1 ratio transformer the data bus signal is typically 7 Volts P-P at point 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” signal applied to the “INHIBIT” takes priority over the condition of the data inputs and disables the transmitter (See Transmitter Logic Waveform, Figure 1). The Transmitter may be safely operated for an indefinite period with the 1553 bus (point A) short circuited at 100% duty cycle. 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). The pre-set internal thresholds will detect data bus signals, point A Figure 5, exceeding 1.20 Volts P-P and reject signals less than 0.6 Volts P-P when used with a transformer (See Figure 5 for transformer data and typical connection). A low level at the RX Strobe input inhibits the DATA and DATA outputs. If unused, a 2K pull-up to +5 Volts is recommended. SCD4433D Rev C TX DATA IN TX DATA OUT DRIVER TX DATA IN ACTIVE FILTER OUTPUT STAGE TX DATA OUT REFERENCE COMP. RX DATA OUT ACTIVE FILTER COMP. TX INHIBIT +5 V (VL) +12 V (VCC) -12 V (VEE) GND1 GND2 GND3 RX STROBE IN RX DATA IN RX DATA IN INPUT AMPLIFIER RX DATA OUT CASE BLOCK DIAGRAM (WITHOUT TRANSFORMER) DATA IN DATA IN INHIBIT LINE TO LINE OUTPUT NOTE: DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them, and must be in the same state during off times (both high or low). FIGURE 1 – TRANSMITTER LOGIC WAVEFORMS IDEALIZED LINE TO LINE INPUT STROBE DATA OUT DATA OUT Note overlap FIGURE 2 – RECEIVER LOGIC WAVEFORMS IDEALIZED SCD4433D Rev C 2 ABSOLUTE MAXIMUM RATINGS Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150°C Power Supply Voltages VCC VEE VL -0.3 VDC to +18 VDC +0.3 VDC to -18 VDC -0.3 VDC to +7.0 VDC Logic Input Voltage -0.3 VDC to +5.5 VDC ±40VP-P Receiver Differential Input Receiver Input Voltage (Common Mode) ±10V Driver Peak Output Current 300 mA Total Package Power Dissipation over the Full Operating Case Temperature Range 2.5 Watts (Note: Normal operation conditions require one transmitter on and the other off at any given time) Maximum junction to Case Temperature 10°C Thermal resistance – Junction to Case 4°C/W ELECTRICAL CHARACTERISTICS – DRIVER SECTION 2/ 3/ INPUT CHARACTERISTICS, TX DATA IN OR TX DATA IN Parameter Condition Symbol Min Typ Max Unit "0" Input Current VIN = 0.4V IILD - -0.1 -0.2 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 INHIBIT CHARACTERISTICS "0" Input Current VIN = 0.4V IILI - -0.1 -0.2 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 tDXOFF - 175 225 nS tDXON - 90 150 nS VNOI - 2 10 mVp-p Point B ZOI 2K - - Ω Point C ZOI 1K - - Ω Figure 5, Point A VO 6.5 7.5 9.0 Vp-p Rise and fall times (10% to 90% of Vp-p output) tR / tF 100 160 300 nS Output Offset at point A on Figure 3, 2.5µS after midpoint crossing of the parity bit of the last word of a 660µS message. VOS - - ±90 mVpeak Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal tDTX - 100 200 nS Delay from TX inhibit, (0➝1) to inhibited output Delay from TX inhibit, (1➝0) to active output From mid pt inhibit to ±1.2V Figure 5, Point B Differential Output Noise, inhibit mode Differential Output Impedance (inhibited) Note 1. See Figure 5 OUTPUT CHARACTERISTICS Differential output level SCD4433D Rev C 3 ELECTRICAL CHARACTERISTICS – RECEIVER SECTION Parameter Differential Voltage Range, Figure 5 Point B Condition Symbol Min Typ Max Unit TXFMR 1:1 VIDR - - 40 VPK CMRR 45 - - dB Common Mode Rejection Ratio (Note 3) "1" State – Rx Data or Rx Data Output IOH = -0.4 mA VOH 2.5 3.7 - V "0" State – Rx Data or Rx Data Output IOI = 4 mA VOL - 0.35 0.5 V tDXT - 270 400 nS VTH 0.60 0.75 1.15 VP-P Delay (average) from Differential Input Zero Crossings to RX DATA and RX DATA Output 50% points Input Threshold Voltage (referred to the bus) 100KHz–1MHz STROBE CHARACTERISTICS (LOGIC "0" INHIBITS OUTPUT) "0" Input Current VS = 0.4V IIL - -0.1 -0.2 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 - 50 100 nS POWER DATA POWER SUPPLY CURRENTS – PER CHANNEL – SEE FIGURE 4 Transmitter Standby ICC IEE IL - 0 12 18 1 16 30 25% duty cycle ICC IEE IL - 58 12 18 63 20 30 50% duty cycle ICC IEE IL - 115 12 18 125 20 30 100% duty cycle ICC IEE IL - 230 12 18 250 20 30 mA POWER SUPPLY VOLTAGES ±12V Operating Power Supply Voltage Range VCC VEE +11.40 +12.00 +12.60 -11.40 -12.00 -12.60 V V +5V Operating Power Supply Voltage Range) VL +4.75 V +5.00 +5.25 Notes: 1. Power on or off, measured from 75KHz to 1MHz at point A and transformer self impedance of 3KΩ minimum at 1MHz. 2. Power Supplies: +12 Volts ±0.60 V & +5 Volts ±0.5V, bypassed by 10 µF (Tantalum recommended) Capacitor minimum. All measurements & specifications apply over the temperature range of -55°C to +125°C (Case temperature) unless otherwise specified. 3. When measured as shown per Figure 5 with ± 10 Volt peak, line to ground, DC to 2MHz 4. Typical power is measured with VBUS at point A = 7.5 VP-P SCD4433D Rev C 4 LAST BIT Magnified View OUTPUT OFFSET * OUTPUT OFFSET * 0 Volts Transformer Coupled Stub 2.5 µS 70Ω ACT4433 TX DATA OUT *Offset measured at point A in Figure 5 2 FIGURE 3 – TRANSMITTER (TX) OUTPUT OFFSET TX DATA OUT 1:1.4 52.5Ω 1:0.707 7 3 C A 1 5 T1553-1 52.5Ω RX DATA IN Zoi VCM RX DATA IN Direct Coupled Stub ACT4433 3600 TX DATA OUT 3200 3.0W 2 POWER DISSIPATION MILLIWATTS 2800 2400 TX DATA OUT 1.9W 1600 RX DATA IN 1200 RX DATA IN 800 B A 4 1 T1553-1 52.5Ω Zoi Typical Hybrid Dissipation 400 0 0 8 Typical Hybrid Input Power 2000 0.270 52.5Ω 1:1 3 10 20 30 40 50 60 70 80 Transformer Model use Technitrol Part# 1553-1 or equivalent 90 100 DUTY CYCLE – PERCENT Note: VCC = +12V, VEE = -12V, VL = +5V, Transformer ratio 1:1, VBUS (point A) at 7VP-P. FIGURE 5 – TYPICAL 1553 BUS CONNECTION FIGURE 4 – POWER DISSIPATION VS. DUTY CYCLE (Total hybrid with one channel transmitting and the other not powered) SCD4433D Rev C 5 70Ω FIGURE 6 – 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 A 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 B 15 GROUND B 16 -VEE B 17 VL B 18 TX INHIBIT B 19 TX DATA IN B 20 TX DATA IN B 21 +V 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 SCD4433D Rev C 6 CONFIGURATIONS AND ORDERING INFORMATION Model No. Receiver Data level DESC SMD ACT4433-D Normally Low Pending ACT4433-DI Normally High ACT4433-DF Normally Low ACT4433-DFI Normally High Case Configuration Plug-In Package Dual Flat Package PACKAGE CONFIGURATION OUTLINE Flat Package Plug-In Package .180 MAX. .072 1.500 MAX. .015 28 1.480 MAX. 28 15 0.780 MAX. 15 0.780 MAX. 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 SCD4433D Rev C 7