XRT5793ES-TQFP Exar, XRT5793ES-TQFP Datasheet

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XRT5793ES-TQFP

Manufacturer Part Number
XRT5793ES-TQFP
Description
Peripheral Drivers & Components - PCIs 4 CH E1 AFE
Manufacturer
Exar
Datasheet

Specifications of XRT5793ES-TQFP

Product Category
Peripheral Drivers & Components - PCIs
Rohs
yes
FEATURES
GENERAL DESCRIPTION
The XR-T5793 is an optimized line interface unit, built
using low power CMOS technology. This device contains
four independent E1 channels for primary rate, PCM
applications up to 2.048Mbps. Each channel performs
the driver and receiver functions necessary to convert
bipolar signals to TTL/CMOS compatible logic levels and
vice versa. The device supports single ended or balanced
line interfaces on each channel, thereby providing the
user an option of reducing system cost and board space
by replacing the transformer with a capacitor.
Each of the four drivers can be independently disabled,
allowing
management.
compliant. Moreover, the return loss is at least 18dB over
a frequency range of 51kHz to 3.072MHz.
The slicing circuit in the receive path is able to tolerate a
maximum of 12dB of cable loss with a minimum input
ORDERING INFORMATION
Meets CCITT G.703 Pulse Mask Template for
2.048Mbps (E1) Rates
Transmitter and Receiver Interfaces Can Be:
– Single Ended, 75
– Balanced, 100 or 120 Transformer Coupled
Minimum Return Loss is 20dB (Receive) and 18dB
(Transmit), Exceeds G.703 and ETSI 300 166
Specifications
Bipolar Outputs Can Be Disabled Individually (High
Z Outputs)
System Interface is TTL Compatible on Digital Input
and TTL/CMOS Compatible on Digital Output Pins
Rev. 2.00
1995
Coupled
maximum
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538
Output pulses are fully CCITT G.703
XR-T5793IV
XR-T5793IJ
Part No.
flexibility
Capacitive or Transformer
...the analog plus company
in
system
80 Lead TQFP (14 x 14 x 1.4 mm)
68 Lead PLCC
power
Package
1
APPLICATIONS
sensitivity of 600mV over the operating temperature
range. Return loss on the receive interfaces is minimum
20dB from 51kHz to 3.072MHz.
Local and remote loopbacks can be performed on any of
the four channels.
detection circuitry and a LOS pin is provided for each
input.
The XR-T5793 is targeted for multi-line E1 line card
applications
consumption are critical. Also, the device may be used in
T1 applications (1.544Mbps) which do not require
meeting the DSX-1 cross connect pulse template. The
XR-T5793 is pin compatible with the XR-T5794, which
supports a fifth channel.
redundancy and dedicated monitoring on any of the eight
bipolar paths.
TM
Individual Channel Loss of Signal Detection, Local
and Remote Digital Loopback
Low Power, CMOS Technology
Over-Temperature Protection
Multi-Line E1 Interface Cards
E1 Network Equipment
– Multiplexers
– Cross Connects
– Switching Systems
Fault Tolerant Systems
(510) 668-7000
where
Temperature Range
A separate loss of signal (LOS)
real
-40 C to +85 C
-40 C to +85 C
FAX (510) 668-7017
Operating
estate
Line Interface Unit
The fifth channel is for
XR-T5793
and
Quad E1
low
June 1997-3
power

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XRT5793ES-TQFP Summary of contents

Page 1

... ORDERING INFORMATION Part No. XR-T5793IJ XR-T5793IV Rev. 2.00 1995 EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 TM Individual Channel Loss of Signal Detection, Local and Remote Digital Loopback Low Power, CMOS Technology Over-Temperature Protection APPLICATIONS Multi-Line E1 Interface Cards E1 Network Equipment – ...

Page 2

XR-T5793 BLOCK DIAGRAM 75 Unbalanced (Without Transformer) TIP Impedance Selectable Receivers. Return Loss Exceeds G7.03. TIP 120 Balanced RX INPUT (or 100 ) RING Impedance PE-65834 Selectable TTI-7148 Tristate Drivers Return LOS Threshold Based on G.775 Loss Exceeds ETSI 300 ...

Page 3

PIN CONFIGURATION AV TXCLK4 TXPOS4 TXNEG4 TXCLK3 TXPOS3 TXNEG3 LOOPEN4 LOOPEN3 GND V RXPOS3 RXNEG3 RXPOS4 RXNEG4 TXEN2 TXEN1 TXOUT1 TXOUT2 AGND AGND TXOUT3 ...

Page 4

XR-T5793 PIN DESCRIPTION PLCC SQFP Pin # Pin # Symbol Type AGND GND 4 74 TXOUT3 TXOUT4 8 ...

Page 5

PIN DESCRIPTION (CONT’D) PLCC SQFP Pin # Pin # Symbol Type 27 21 LPMOD4 28 22 LPMOD3 29 23 RXIN4 30 24 LOS4 31 25 LOS3 32 26 RXIN3 29, 30 RGND GND ...

Page 6

XR-T5793 PIN DESCRIPTION (CONT’D) PLCC SQFP Pin # Pin # Symbol Type 51 49 LOOPEN1 52 50 LOOPEN2 53 51 TXNEG1 54 52 TXPOS1 55 53 TXCLK1 56 54 TXNEG2 57 55 TXPOS2 58 56 TXCLK2 59 57,58, ...

Page 7

DC ELECTRICAL CHARACTERISTICS Test Conditions - all V A Symbol Parameter DC Parameters Supply Positive Supply Negative SS Inputs V High Level Input IH ...

Page 8

XR-T5793 AC ELECTRICAL CHARACTERISTICS Test Conditions - all V A Symbol Parameter AC PARAMETERS V Output Pulse Amplitude TXOUT ( Output Pulse Amplitude TXOUT (120 ) V Output Pulse ...

Page 9

T 3 TXCLK( TXPOS(n) TXNEG(n) Figure 2. Transmit Timing Diagram RXIN RXPOS RXNEG Figure 3. Receive Timing Diagram Rev. 2. ...

Page 10

XR-T5793 Transmit Interface 51kHz to 102kHz 102kHz to 2.048MHz 2.048MHz to 3.072MHz Receive Interface 51kHz to 102kHz 102kHz to 2.048MHz 2.048MHz to 3.072MHz Note The return loss has been measured on the evaluation board coupled via a capacitor and terminated ...

Page 11

SYSTEM DESCRIPTION This device is a quad E1 transceiver which provides electrical interface for 2.048Mbps applications. Its unique architecture includes four receiver circuits that convert CCITT G.703 compliant bipolar signals to TTL compatible logic levels. Likewise, in the other direction, ...

Page 12

XR-T5793 Output Transformer Selection The 1:1.265 ratio output transformer is recommended for the XR-T5793 because this ratio gives the best possible transmitter output return loss for 120 service. However, other transformers may provide an adequate return loss for many applications. ...

Page 13

V = 100% 10% 20% 50% 10% 0% 10% Note: V corresponds to the nominal peak value Figure 7. CCITT G.703 Pulse Template Rev. 2.00 XR-T5793 269 ns (244 + 25) Nominal pulse 194 ns (244 – 50) ...

Page 14

XR-T5793 68 LEAD PLASTIC LEADED CHIP CARRIER SYMBOL Note: The control dimension is the inch column Rev. ...

Page 15

LEAD THIN QUAD FLAT PACK ( 1.4 mm, TQFP Seating Plane A 1 SYMBOL Note: The control ...

Page 16

... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...

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