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VSC7937 Datasheet(PDF) 2 Page - Vitesse Semiconductor Corporation |
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VSC7937 Datasheet(HTML) 2 Page - Vitesse Semiconductor Corporation |
2 / 14 page VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet VSC7937 Single Supply 2.5Gb/s Voltage Driver Page 2 G52200-0, Rev 3.0 03/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com Internet: www.vitesse.com Electrical Characteristics Table 1: High-Speed Inputs and ECL Outputs VSS = -5.2V, RL = 50Ω at IOUT pin NOTE: (1) 100mA when RL = 30Ω at (N) OUT pin. Table 2: DC Characteristics Symbol Parameter Min Typ Max Units Conditions VIN Single-Ended Input Voltage Swing 300 — 1500 mVp-p VCM = -2.0V VCM Differential Input Common-Mode Range -2.3 — -1.3 V VSS = -5.2V VOH ECL Output HIGH Voltage -1200 —— mV 50 Ω to -2.0V VOL ECL Output LOW Voltage —— -1600 mV 50 Ω to -2.0V VIN On-Chip Terminations 35 — 65 Ω INOUT Maximum Peak Current (1) 60 —— mA VIP = VSS + 1.4V VIB1 = -5.2V VIB2 = -5.2V DIN = LOW INOUT Maximum Peak Current —— 4mA VIP = -4.1V VIB1 = -5.2V VIB2 = -5.2V DIN = HIGH tR, tF Rise and Fall Times —— 100 ps 20% to 80% VOUT Output Voltage —— -3.0 V VIP = -4.1V VIB1 = -5.2V VIB2 = -5.2V DIN = LOW tSU Set-up Time - Data to CLK 20 50 — ps tH Hold Time — 50 90 ps Symbol Parameter Min Typ Max Units Conditions VSS Power Supply Voltage -5.5 -5.2 -4.75 V IBIAS1, IBIAS2 Maximum Bias Current 30 —— mA VIB1, 2 = VSS + 1.8V VIP = -5.2V VDCC Duty-Cycle Control Voltage VSS — VSS + 3V V VIH HIGH Level Input Voltage -1.15 -0.9 -0.8 V VREF = 1.3V VIL LOW Level Input Voltage — -1.7 -1.45 V VREF = 1.3V VIB1, VIB2 BIAS Control Voltage VSS — VSS +1.8 V VIP Modulation Control Voltage VSS — VSS +1.4 V |
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