CY7B951-SXIT

CY7B951 Local Area Network ATM Transceiver Features • SONET/SDH and ATM Compatible • Compatible with PMC-Sierra PM5345 SUNI™ • Clock and data recovery from 51.84- or 155.52-MHz datastream • 155.52-MHz clock multiplication from 19.44-MHz source • 51.84-MHz clock multiplication from 6.48-MHz source • ±1% frequency agility • Line Receiver Inputs: No external buffering required • Differential output buffering • • 100K ECL compatible I/O • No output clock “drift” without data transitions • Link Status Indication • Loopback testing Logic Block Diagram • Single +5V supply • 24-pin SOIC • Compatible with fiber optic modules, coaxial cable, and twisted pair media • No external PLL components • Power down options to minimize power or crosstalk • Low operating current: 0°C VCC – 1.86 VCC – 1.62 V 0.6 V Three-Level Input Pins (MODE) VIHH Three-Level Input HIGH VCC – 0.75 VCC VIMM Three-Level Input MID VCC/2 – 0.5 VCC/2 + 0.5 V VILL Three-Level Input LOW 0.0 0.75 V 30 mA V Operating Current[5] ICCS Static Operating Current ICCR Receiver Operating Current 50 mA ICCT Transmitter Operating Current 13 mA ICCE ECL Pair Operating Current 7.0 mA ICC5 Additional Current 51.84 MHz 7.0 mA ICCO Additional Current LFI = LOW 3 mA Capacitance[6] Parameter CIN Description Input Capacitance Test Conditions TA = 25°C, f0 = 1 MHz, VCC = 5.0V Max. Unit 10 pF Notes 4. Specified only for temperatures below 0°C. 5. Total Receiver operating current (assuming that the Transmitter is not activated) can be found by adding ICCS + ICCR + x * ICCE; where x is 2 if the ROUT± outputs are not activated and 3 if they are activated. Total Transmitter operating current (assuming that the Receiver is not activated) can be found by adding ICCS + ICCT + x * ICCE; where x is 1 if the TOUT± outputs are not activated and 2 if they are activated. Total device power (assuming that the Transmitter and the Receiver are activated) can be found by adding ICCS + ICCR + ICCT + x * ICCE; where x represents the number of ECL output pairs activated. 6. Tested initially and after any design or process changes that may affect these parameters. Document Number: 38-02010 Rev. *A Page 6 of 10 CY7B951 AC Test Loads and Waveforms (a) TTL AC Test Load[7] (b) ECL AC Test Load[7] (c) TTL Input Test Waveform (d) ECL Input Test Waveform Switching Characteristics Over the Operating Range Parameter fREF fB tPE Description Reference Frequency Bit Time[8] Receiver Static Phase Error[6] Min. Max. Unit MODE = LOW 6.41 6.55 MHz MODE = HIGH 19.24 19.64 MHz MODE = LOW 19.5 19.1 ns MODE = HIGH 6.50 6.40 ns MODE = LOW 100 ps MODE = HIGH 200 ps RCLK±)[6] tODC Output Duty Cycle (TCLK±, tRF Output Rise/Fall Time[6] 48 52 % 0.4 1.2 ns tLOCK PLL Lock Time (RIN transition density 25%)[9] tRPWH REFCLK Pulse Width HIGH 10 100 µs ns tRPWL REFCLK Pulse Width HIGH 10 ns tDV Data Valid 3 ns tDH Data Hold 1 tPD Propagation Delay (RIN to ROUT, TSER to TOUT)[10] ns 10 ns Notes 7. Cypress uses constant current (ATE) load configurations and forcing functions. This figure is for reference only. 8. fB is calculated as 1/(fREFX8). 9. tLOCK is the time needed for transitioning from lock to REFCLK X8 to lock to data. 10. The ECL switching threshold is the differential zero crossing (i.e., the place where + and – signals cross). Document Number: 38-02010 Rev. *A Page 7 of 10 CY7B951 Switching Waveforms for the CY7B951 SONET/SDH Serial Transceiver Ordering Information Speed (ns) Ordering Code 25 CY7B951-SC 25 CY7B951-SXC 25 CY7B951-SI 25 CY7B951-SXI Document Number: 38-02010 Rev. *A Package Name S24.3 SZ24.3 S24.3 SZ24.3 Package Type Operating Range 24-Lead (300-Mil) Molded SOIC Commercial 24-Lead (300-Mil) Pb-Free Molded SOIC Commercial 24-Lead (300-Mil) Molded SOIC Industrial 24-Lead (300-Mil) Pb-Free Molded SOIC Industrial Page 8 of 10 CY7B951 Package Diagram Figure 3. 24-Lead (300-Mil) SOIC S24.3/SZ24.3 NOTE : 1. JEDEC STD REF MO-119 PIN 1 ID 2. BODY LENGTH DIMENSION DOES NOT INCLUDE MOLD PROTRUSION/END FLASH,BUT 12 DOES INCLUDE MOLD MISMATCH AND ARE MEASURED AT THE MOLD PARTING LINE. 1 MOLD PROTRUSION/END FLASH SHALL NOT EXCEED 0.010 in (0.254 mm) PER SIDE 3. DIMENSIONS IN INCHES 4. PACKAGE WEIGHT 0.65gms 0.291[7.391] 0.300[7.620] MIN. MAX. * 0.394[10.007] 0.419[10.642] 13 24 PART # S24.3 STANDARD PKG. SZ24.3 LEAD FREE PKG. 0.026[0.660] 0.032[0.812] SEATING PLANE 0.597[15.163] 0.615[15.621] 0.092[2.336] 0.105[2.667] 0.050[1.270] TYP. 0.013[0.330] 0.019[0.482] 0.004[0.101] 0.0118[0.299] * 0.004[0.101] 0.0091[0.231] 0.0125[0.317] 0.015[0.381] 0.050[1.270] * 51-85025-*C SUNI is a trademark of PMC-Sierra, Incorporated. All products and company names mentioned in this document may be the trademarks of their respective holders. Document Number: 38-02010 Rev. *A Page 9 of 10 © Cypress Semiconductor Corporation, 2006. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. CY7B951 Document History Page Document Title: CY7B951 Local Area Network ATM Transceiver Document Number: 38-02010 REV. ECN. Issue Date Orig. of Change ** 105848 03/26/01 SZV Changed from Spec number: 38-00358 to 38-02010 *A 560754 See ECN PCX Added Pb-Free part numbers to ordering information Document Number: 38-02010 Rev. *A Description of Change Page 10 of 10