ACT4453 AEROFLEX | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 8

Technical content

Features

  • Single 5 Volt Supply Operation
  • Low Power Dissipation
  • Small Size & Light Weight
  • Dual Transceivers save Space & Cost
  • Outstanding MIL-STD-1553 performance
  • Processed and screened to Mil-STD-883 specs
  • Radiation Hard Dielectric Isolation Monolithic construction for Severe Environments
  • Superior High Frequency Line Transient and Input Ripple Rejection
  • Input and Output TTL Compatible Design MIL-PRF-38534 Compliant Devices Available
  • DESC SMD# 5962-89522 General Description: The Aeroflex Circuit Technology ACT4453 / 4463 series are next generation monolithic transceiver designs which provides full compliance with MIL-STD-1553A/B and 1760 requirements in the smallest packages with low power consumption and single power supply operation. The ACT4453 / 4463 series performs the front-end analog function of inputting and outputting data through a transformer to the MIL-STD-1553 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: The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:2.12 ratio transformer, isolated on the data bus side with two 52.5 Ohm fault isolation resistors, and loaded by Block Diagram (without Transformer) ACTIVE OUTPUT STAGE COMP. COMP.REFERENCE ACTIVE FILTER INPUT AMPLIFIER DRIVER TX DATA IN TX DATA IN TX INHIBIT +5 V RX DATA IN RX DATA IN STROBE TX DATA OUT TX DATA OUT RX DATA OUT RX DATA OUT FILTER +5V RTN ACT 4453 / 4463 SINGLE SUPPLY TRANSCEIVERS FOR MIL-STD-1553/1760

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67002 two 70 Ohm terminations, the data bus signal is typically 7 volts 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 Transmitter may be safely operated for an indefinite period with the bus (point A-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 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 Strobe input inhibits the DATA and DATA outputs. If unused, a 2K pull-up to +5 Volts is recommended 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* Figure 2 — Receiver Logic Waveforms Idealized* Note overlap LINE TO LINE INPUT DATA OUT DATA OUT STROBE * See Figure 8 For Actual Waveforms

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67003 Note 1. Power on or off, measured from 75KHz to 1MHz at point A-A' and transformer self impedance of 3KΩ minimum Absolute Maximum Ratings Operating case temperature -55°C to +125°C Storage case temperature -65°C to +150°C Power supply voltage -0.3 V to +7.0 V Logic input voltage -0.3 V to +5.5 V Receiver differential input ±10 V Receiver input voltage (common mode) ±5 V Driver peak output current 600 mA Total package power dissipation over the full operating case temperature rise

2 Watts

Maximum junction to case temperature 10°C Thermal resistance – junction to case 5°C/W Electrical Characteristics — Driver Section Input Characteristics, TX DATA in or TX DATA in (Notes 2 & 3 apply) Parameter Condition Symbol Min Typ Max Unit "0" Input Current VIN = 0.4 V IILD -0.2 -0.4 mA "1" Input Current VIN = 2.7 V 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 2.0 V Delay from TX inhibit, (0→ 1) to inhibited output tDXOFF 250 350 nS Delay from TX inhibit, (1→ 0) to active output tDXON 150 250 nS Differential output noise, inhibit mode VNOI 2 10 mV P-P Differential output impedance (inhibited) Note 1 ZOI 2K Ω Output Characteristics Differential output level R L=35 Ω VO 6 7.5 9 VP-P Rise and fall times(10% to 90% of P-P output) tr 100 200 300 nS Output offset at point A-A' on Figure 5, 2.5µS after midpoint crossing of the parity bit of the last word of a 660µS message R L=35 Ω VOS ± 90 mV peak Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal tDTX 120 250 nS (Note: Normal operation conditions require one transceiver on and the other off.)

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67004 Note 2: Vcc = 5 Volts ±0.1 V, bypassed by 2.2µF (Tantalum recommended) Capacitor minimum. All measurements & specifications apply over the temperature range of -55°C to +125°C (case temperature) unless otherwise specified. Note 3: When measured at point A-A’ with ± 10 Volt peak, line to ground, DC to 2MHz Note 4: Typical power is measured with Vbus at point A-A’ = 7 VP-P Electrical Characteristics — Receiver Section Parameter Condition Symbol Min Typ Max Unit Differential Receiver Input Voltage Range (See Figure 5, point P–P') TXFMR 2.12:1 VIDR 14 20 VP-P Common Mode Rejection Ratio (Note 3) CMRR 45 dB Strobe Characteristics (Logic "O" Inhibits Output) "0" Input Current VS=0.4 V 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 50 100 nS Threshold Characteristics (Sinewave Input) Input Threshold Voltage (referred to the bus)100KHz–1MHz VTH 0.60 0.82 1.10 V P-P Output Characteristics – RX DATA and RX DATA "1" State IOH = -0.4 mA VOH 2.5 3.7 V "0" State IOL = -4.0 mA VOL 0.35 0.5 V Delay, (average) from Differential Input Zero Crossings to RX DATA and RX DATA Output 50% points tDRX 340 500 nS Power Data Power Supply Currents – Per Channel Transmitter Standby Note 4 ICC 18 30 mA 25% duty cycle 135 195 50% duty cycle 250 345 100% duty cycle 475 650 Power Supply Voltage Operating Power Supply Voltage Range VCC +4.75 +5.00 +5.50 V

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67005 Configurations and Ordering Information Model No. DESC No. Receiver Data level Case Configuration ACT 4453 5962-89522 Normally Low Rx Dual in Line Dual ACT 4463 5962-89522 Normally High Rx Dual in Line Dual ACT 4453-2 5962-89522 Normally Low Rx Flat Package Dual ACT 4463-2 5962-89522 Normally High Rx Flat Package Dual Figure 3 – Transmitter (TX) Output Wave form Figure 4 – Transmitter (TX) Output offset Figure 5 – Typical direct transformer connectionFigure 6 – Power Dissipation vs. Duty Cycle 0 10 20 30 40 50 60 70 80 90 100 1600 1400 1200 1000 800 600 400 200 DUTY CYCLE – PERCENT PO W E R D IS SIPATIO N M ILLIW ATTS 6V P-P MIN 9V P-P MAX 90% 10% tr* tf* * Rise and fall times measured at point A-A' in Figure 5

0 Volts

OUTPUT OFFSET * OUTPUT OFFSET * LAST BIT 2.5 µsec *Offset measured at point A-A' in Figure 5 N1:N2 A A'B' BTX DATA OUT TX DATA OUT RX DATA IN RX DATA IN 70Ω 70Ω 52.5Ω 52.5Ω Center Tap Transformer turns ratios: N1:N2 = 1:2.12 N1:N3 = 1:1.5 Use Technitrol 1553-5 or equiv. N1:N3 for Stub Coupling 0 volts Magnified View (Total hybrid with one channel transmitting Maximum Typical and the other not powered) Note:Vcc=5 Volts,Transformer ratio 1:2.12, Vbus (pt A-A') at 7 Volts P-P P

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67006 TX DATA IN BUS OUT RX DATA OUT RX DATA OUT Figure 8 ACTUAL HYBRID WAVEFORMS* — 25°C TYPICAL START OF WORD – 33 WORD TRANSMISSION Point A–A' See Figure 5 CH 2 CH 1 CH 3 CH 4 END OF WORD – 33 WORD TRANSMISSION TX DATA IN BUS OUT RX DATA OUT RX DATA OUT Point A–A' See Figure 5 * Oscilloscope used is a TEK TDS540 with Probe 6139A. CH 2 CH 1 CH 3 CH 4

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67007 Figure 7 – Pin Numbers & Functions ACT4453/4463 Pin # Function Channel

1 TX DATA OUT A

2 TX DATA OUT A

3 GROUND 1 A

5 RX DATA OUT A

6 STROBE A

7 GROUND 2 A

8 RX DATA OUT A

9 CASE

10 TX DATA OUT B

11 TX DATA OUT B

12 GROUND 1 B

14 RX DATA OUT B

15 STROBE B

16 GROUND 2 B

17 RX DATA OUT B

20 RX DATA IN B

21 RX DATA IN B

22 GROUND 3 B

25 INHIBIT B

26 TX DATA IN B

27 TX DATA IN B

29 RX DATA IN A

30 RX DATA IN A

31 GROUND 3 A

34 INHIBIT A

35 TX DATA IN A

36 TX DATA IN A

Aeroflex Circuit Technology SCD4453 REV A 1/29/98 Plainview NY (516) 694-67008 Aeroflex Circuit Technology

35 South Service Road

Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800)THE-1553 1.70

1.90 MAX

0.78 MAX .097 36 19 Model ACT4453-2/4463-2 Flat Pack 0.600 0.085 0.21MAX 0.24 MIN 0.018 DIA. ±0.002

0.10 Typ

0.015 ±0.002

0.78 MAX

0.097 0.086 R

4 Places

0.40 MIN

2 SIDES

0.175 MAX

0.065 REF 0.010 ±0.002 Notes 1. Dimensions shown are in inches 2. Pins are equally spaced at 0.100±0.002 tolerance, non-cumulative, each row Specifications subject to change without notice. CIRCUIT TECHNOLOGY Model ACT4453/4463 Dual In Line Designator Pin 1 & ESD Designator Pin 1 & ESD