Standard Products ACT4435N Transceiver for H009 Specification June 18, 2004 FEATURES ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ACT4435N Transceiver meets H009 data bus specifications Transmitter can be used to drive clock signal line Operates with ±15 Volts to ±12 Volts power supplies Direct replacement for CT1641 and CT1816 devices Voltage source output for higher bus drive power Plug-in and flat package available Monolithic construction using linear ASICs Processed and screened to MIL-STD-883 specs MIL-PRF-38534 compliant devices available Aeroflex is a Class H & K MIL-PRF-38534 Manufacturer X LE F N O 35 R 4 9 E 4 37 A T 8 C -8 A A S U X P LE F F N O 5 9 R 3 7 E 4 3 A T 4 -88 C A A S U ACT4435NFP / 4435N GENERAL DESCRIPTION The Aeroflex Laboratories transceiver model ACT4435N is a new generation monolithic transceiver which provide full compliance with Macair and MIL-STD-1553 data bus requirements The model ACT4435N performs the front-end analog function of inputting and outputting data through a transformer to a H009 data bus. The 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 ACT4435N active filter design has additional high frequency roll-off to provide the required 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. An optional receiver input threshold adjustment can be accomplished by the use of the "External Threshold" terminals. TRANSMITTER 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 transceiver side with two 35 Ohm bus terminating resistors, with the bus terminated by a 170 Ohm resistor the data bus signal produced is 20.0 Volts typical P-P at A-A’ (See Figure 5). When both DATA and DATA inputs are held low or high, the transmitter output becomes 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 1.05 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). This threshold setting can be held by grounding the appropriate pins or modified with the use of external resistors. A low level at the Strobe input inhibits the DATA and DATA outputs. If unused, a 2K Ohm pull-up to +5 Volts is recommended. SCD4435N Rev B TX DATA OUT TX DATA IN DRIVER SHAPING TX DATA IN OUTPUT STAGE TX DATA OUT COMP. RX DATA OUT V+ TX INHIBIT EXT. THRESHOLD DATA DATA SET INTERNAL THRESHOLD DATA EXT. THRESHOLD DATA +5 V -12V or -15V V- RX DATA IN INPUT AMP RX DATA IN ACTIVE FILTER COMP. RX DATA OUT +15V or +12V STROBE BLOCK DIAGRAM (WITHOUT TRANSFORMER) Region 1 2 3 DATA IN DATA IN INHIBIT LINE TO LINE OUTPUT Notes: 1. Data and DATA inputs must be complementry 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, (Terminate Mode), Region 3, Transmitter signal on, low Z. FIGURE 1 – TRANSMITTER LOGIC WAVEFORMS LINE TO LINE INPUT Rx DATA OUT Note overlap Rx DATA OUT 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 FIGURE 2 – RECEIVER LOGIC WAVEFORMS SCD4435N Rev B 2 ABSOLUTE MAXIMUM RATINGS Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150°C Power Supply Voltages ±15VDC P.S. to ±18V DC MAX +5V DC P.S. to +7VDC -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 3.25 Watts 16.25°C Maximum Junction to Case Temperature (100% duty cycle) 5°C/W Junction-Case, Thermal Resistance ELECTRICAL CHARACTERISTICS – DRIVER SECTION INPUT CHARACTERISTICS, TX DATA IN OR TX DATA IN Parameter Condition Symbol Min Typ Max Unit "0" Input Current VIN = 0.4V 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 INHIBIT CHARACTERISTICS "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 Note 1 tDXOFF - 200 500 nS Delay from TX inhibit, (1➝0) to active output Note 1 tDXON - 250 700 nS VNOI - 0.8 10 mV p-p Note2 ZOI 10K - - Ω RL=170 Ω VO 17 21 24 V p-p tr 200 - 300 nS VOS - - ±265 mV peak tDTX - 270 400 nS Differential Output Noise, inhibit mode Differential Output Impedance (inhibited) OUTPUT CHARACTERISTICS Differential output level at point A-A’ on Figure 5 Rise and fall times (10% to 90% of p-p output) Output offset at point A-A’ on Figure 5, 2.5 µS after midpoint crossing of the last bit RL=170 Ω Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal (Note 1) SCD4435N Rev B 3 ELECTRICAL CHARACTERISTICS – RECEIVER SECTION Parameter Condition Symbol Min Typ Max Unit Differential Input Impedance (Note 1) f= 1MHz ZIN 20K - - Ω VIDR - - 40 V p-p Note 1 VICR 10 - - V p-p Point A-A on Figure 5 CMRR 40 - - dB Differential Input Voltage Range Input Common Mode Voltage Range Common Mode Rejection Ratio STROBE CHARACTERISTICS (LOGIC "0" INHIBITS OUTPUT) "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 tSD(ON) - - 150 nS 0.60 1.2 0.80 1.8 1.15 2.3 V P-P V P-P - 4000 - Ω/ V P-P Strobe Delay (turn-on or turn-off) THRESHOLD CHARACTERISTICS (SINEWAVE INPUT ) Internal Threshold Voltage (Referred to the bus) Pins 6 and 11 to GND For 4435N-701 only – Pins 6 and 11 to GND 100KHz-1MHz External Threshold Pins 6 & 11 open, threshold settings resistors from Pin 5 & 12 to ground; For RTH = 3K mimumn to 10K maximum VTH RTH/V TH1 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 50% points tDRX - 275 450 nS POWER SUPPLY CURRENT Duty Cycle Condition Symbol Typ Max Unit Transmitter Standby ICC IEE IL 5 15 18 10 35 30 mA 25% ICC IEE IL 25 35 18 40 60 30 50% ICC IEE IL 45 55 18 60 80 30 100% ICC IEE IL 85 95 18 120 140 30 Notes: 1. Characteristics guaranteed by design, not production tested. 2. Measured at 1mHz at point A-A’, power on or off. 3. Specifications apply over the temperature range of -55°C to +125°C (case temperature) unless otherwise noted. 4. All typical values are measured at +25°C. SCD4435N Rev B 4 LAST BIT tf* 90% Magnified View OUTPUT OFFSET* 17V P-P MIN 24V 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 3 – TRANSMITTER (TX) OUTPUT WAVEFORM TX DATA OUT FIGURE 4 – TRANSMITTER (TX) OUTPUT OFFSET 35Ω N1:N2 4.0 POWER DISSIPATION WATTS A 170Ω A’ TX DATA OUT 35Ω RX DATA IN RX DATA IN 3.5 3.0 (TYPICAL) 2.5 2.0 1.5 1.0 0.5 Transformer turns ratio: N1:N2 = 1:1 Use Aeroflex 25T1553-1 0 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE, PERCENT FIGURE 6 – POWER DISSIPATION VS. DUTY CYCLE FIGURE 5 – TYPICAL TRANSFORMER CONNECTION SCD4435N Rev B 5 CONFIGURATIONS AND ORDERING INFORMATION Model No. ACT4435N DESC No. Receiver Data level Case Specs. To Be Assigned Normally High Plug In H009 Normally High Flat Pack Normally High Plug In ACT4435N-FP - ACT4435N-701 H009 Commercial (0°C - 70°C) PACKAGE CONFIGURATIONS AND PINOUTS PLUG-IN PACKAGE PIN CONNECTIONS 1. TX DATA OUT 2. TX DATA OUT 1.27 MAX 3. TX GND (+5V) 1.10 4. +15V (TX) 5. EXT. DATA THRES 6. INT. DATA THRES 24 13 7. RX DATA OUT 8. STROBE 9. RX GND (+5V) 1.27 10. RXDATA OUT 1.10 MAX 11. INT DATA THRES 12. EXT DATA THRES 13. +15V (RX) 14. N.C. 12 15. RX DATA IN 16. RX DATA IN 17. GND Designator 18. CASE GND Pin 1 & ESD 0.175 19. -15V (RX) MAX 20. +5V 21. TX INHIBIT 22. TX DATA IN 0.24 23. TX DATA IN MIN 24. -15V (TX) 0.018 DIA. 0.100 ±0.002 FLAT PACKAGE 1.27 MAX 0.017 ±0.002 Designator Pin 1 & ESD 1.27 MAX 0.10 Typ 0.400 MAX 2 sides 0.009 ±0.002 0.167 for Low Profile Flat Pack 0.200 for Std Flat Pack 0.080 ±0.015 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. a e ro fl e x. com i nfo- a ms@ a e rofl e x. com 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 SCD4435N Rev B 6