ACT4459-201-2 datasheet, PDF - EEWORLD Datasheet

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ACT4459-201-2: DescriptionMIL-STD-1553 Data Bus Transceiver, LCC-28; CategoryWireless rf/communication Telecom circuit; File Size170KB，8 Pages; ManufacturerCobham Semiconductor Solutions

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ACT4459-201-2 Overview

MIL-STD-1553 Data Bus Transceiver, LCC-28

ACT4459-201-2 Parametric

Parameter Name	Attribute value
Maker	Cobham Semiconductor Solutions
Parts packaging code	QLCC
package instruction	QCCN,
Contacts	28
Reach Compliance Code	unknown
Is Samacsys	N
JESD-30 code	S-XQCC-N28
length	11.43 mm
Number of functions	1
Number of terminals	28
Maximum operating temperature	125 °C
Minimum operating temperature	-55 °C
Package body material	UNSPECIFIED
encapsulated code	QCCN
Package shape	SQUARE
Package form	CHIP CARRIER
Certification status	Not Qualified
Filter level	MIL-STD-883
Maximum seat height	2.54 mm
Nominal supply voltage	5 V
surface mount	YES
Telecom integrated circuit types	MIL-STD-1553 DATA BUS TRANSCEIVER
Temperature level	MILITARY
Terminal form	NO LEAD
Terminal pitch	1.27 mm
Terminal location	QUAD
width	11.43 mm
Base Number Matches	1

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Standard Products

ACT4455/4459 Single Supply Transceivers

for MIL-STD-1553/1760 & SAE-AS15531

www.aeroflex.com/Avionics

November 19, 2004

FEATURES

❑

Small size, light weight and low standby power single transceiver

Single +5V power supply

Monolithic construction

Outstanding MIL-STD-1553 / SAE-AS15531 performance

Designed for commercial, industrial and aerospace applications

Processed and screened to MIL-STD-883 specs

MIL-PRF-38534 compliant devices

Aeroflex-Plainview is a Class H & K MIL-PRF-38534 manufacturer

DSCC Standard Microcircuit Drawing (SMD): 5962–96741

GENERAL DESCRIPTION

The Aeroflex-Plainview ACT4455/4459 series are next generation monolithic transceiver designs which provide full

compliance with MIL-STD-1553A /B, MIL-STD-1760 and SAE-AS15531 requirements in the smallest packages

with low power consumption and single power supply operation. The 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.

TRANSMITTER

The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:2.5 ratio

transformer the data bus signal is typically 7.5 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.

SCD4455 Rev B

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