SP508E

Rugged 20Mbps, 8 Channel Multi-Protocol Transceiver with Programmable DCE/DTE and Termination Resistor

Description

The SP508E is a monolithic device that supports eight (8) popular serial interface standards for Wide Area Network (WAN) connectivity. The SP508E is fabricated using a low power BiCMOS process technology, and incorporates an Exar regulated charge pump allowing +5V only operation. Exar's patented charge pump provides a regulated output of +5.8V, which will provide enough voltage for compliant operation in all modes. Eight (8) drivers and eight (8) receivers can be configured via software for any of the above interface modes at any time. The SP508E requires no additional external components for compliant operation for all of the eight (8) modes of operation other than four capacitors used for the internal charge pump. All necessary termination is integrated within the SP508E and is switchable when V.35 drivers and V.35 receivers, or when V.11 receivers are used. The SP508E provides the controls and transceiver availability for operating as either a DTE or DCE.

Additional features with the SP508E include internal loopback that can be initiated in any of the operating modes by use of the LOOPBACK pin. While in loopback mode, receiver outputs are internally connected to driver inputs creating an internal signal path bypassing the serial communications controller for diagnostic testing. The SP508E also includes a latch enable pin with the driver and receiver address decoder. The internal V.11 or V.35 receiver termination can be switched off using a control pin (TERM_OFF) for monitoring applications. All eight (8) drivers and receivers in the SP508E include separate enable pins for added convenience. The SP508E is ideal for WAN serial ports in networking equipment such as routers, access concentrators, network muxes, DSU/CSU's, networking test equipment, and other access devices.

Applicable U.S. Patents-5,306,954; and others patents pending.

For technical support or help choosing a product please email Exar’s Serial Technical Support group at:  serialtechsupport@exar.com.

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Features

  • 20Mbps Differential Transmission Rates
  • 15kV ESD Tolerance for Analog I/Os
  • Internal Transceiver Termination Resistors for V.11/V.35
  • Interface Modes:
    • RS-232 (V.28)
    • EIA-530 (V.10 & V.11)
    • X.21 (V.11)
    • EIA-530A (V.10 & V.11)
    • RS-449/V.36 – V.35 (V.10 & V.11)
  • Software Selectable Protocols with 3-Bit Word
  • Eight Drivers and Eight Receivers
  • V.35/V.11 Receiver Termination Network Disable Option
  • Internal Line or Digital Loopback Testing
  • Adheres to NET1/NET2 and TBR-2 Requireme
  • Easy Flow-Through Pinout
  • +5V Only Operation
  • Individual Driver/Receiver Enable/Disable Controls
  • Operates in DTE or DCE Mode

Application

  • Router
  • Frame Relay
  • CSU
  • DSU
  • PBX
  • Secure Communication Terminals

Design Tools

Technical Library

Packaging

Pkg Code Details Quantities Dimensions PDF
LQFP100
  • JEDEC Reference: MS-026
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 45.7ºC/W
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 1000¹
  • Quantity per Tube: n/a
  • Quantity per Tray: 90
  • Reel Size (Dia. x Width x Pitch): 330 x 24 x 20
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 14.00
  • Width: 14.00
  • Thickness: 1.40
  • Lead Pitch: 0.50

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP508ECF-L LQFP100 0 70 Active
SP508EEF-L LQFP100 -40 85 Active
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Distribution Date Description File
03/14/2016 Foundry line qualification. Addition of qualified 6 inch wafer processing line in Silan. PCN 16-0207-04 Silan 6 inch-1033.pdf
12/05/2013 Addition of an alternate qualified assembly site, ASE Chung-Li (Taiwan). Alternate assembly site. PCN_13-0623-03A-1033.pdf
10/03/2013 Qualification of SiO2 5KÅ + SiN 7KÅ passivation to replace PSG 10KÅ passivation. Material & Process Changes. PCN_13-0522-02-1033.pdf
10/03/2013 Addition of an alternate qualified assembly site, ASE Chung-Li (Taiwan). Material change and alternate assembly site. PCN_13-0623-03-1033.pdf
05/06/2013 Change in wafer fabrication foundry and part numbers. Qualification of an alternate qualified wafer foundry, Silan, in addition to the current wafer foundry, Episil Technologies. Process & datasheet changes. PCN_12-0522-04-1033.pdf
03/08/2012 Wafer Fabrication Facility Wafer foundry request. PCAN_12-0206-01-1033.pdf
10/28/2009 Design and datasheet changes. To improve device performance and to center the propagation delay. PCN_091020-01-1033.pdf
01/30/2009 Notice of Last-time Buy and Obsolescence Package Discontinuation Notice PDN_090130-01-1033.pdf
01/08/2008 Change of assembly subcontractor for all Sipex part numbers packaged in the 100 lead LQFP packages from Carsem to Unisem’s Batam plant (formerly AIT), and conversion of all Sipex part number in 80 lead MQFP packages built at Carsem to 80 lead LQFP packages built at Unisem’s Batam plant (formerly AIT). Current subcontractor, Carsem, is discontinuing the packages. pcn07-1102-06a-1033.pdf
06/26/2006 Amendment of PCN transferring certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Episil instead of Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site PCN 06-0130-02a-1033.pdf
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site PCN-06-0130-02-1033.pdf