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ICS85311 Dataheets PDF



Part Number ICS85311
Manufacturers ICST
Logo ICST
Description ECL/LVPECL Fanout Buffer
Datasheet ICS85311 DatasheetICS85311 Datasheet (PDF)

www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS85311 Low Skew, 1-to-2 Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer FEATURES • 2 differential 2.5V/3.3V LVPECL / ECL outputs • 1 CLK, nCLK input pair • CLK, nCLK pair can accept the following differential input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL • Maximum output frequency up to 1GHz • Translates any single ended input signal to 3.3V LVPECL levels with resistor bias on nCLK input • Output skew: 15ps (maximum) • Part-to-part ske.

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www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS85311 Low Skew, 1-to-2 Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer FEATURES • 2 differential 2.5V/3.3V LVPECL / ECL outputs • 1 CLK, nCLK input pair • CLK, nCLK pair can accept the following differential input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL • Maximum output frequency up to 1GHz • Translates any single ended input signal to 3.3V LVPECL levels with resistor bias on nCLK input • Output skew: 15ps (maximum) • Part-to-part skew: 100ps (maximum) • Propagation delay: 1.4ns (maximum) • LVPECL mode operating voltage supply range: VCC = 2.375V to 3.465V, VEE = 0V • ECL mode operating voltage supply range: VCC = 0V, VEE = -2.375V to -3.465V • 0°C to 70°C ambient operating temperature • Industrial temperature information available upon request GENERAL DESCRIPTION The ICS85311 is a low skew, high performance 1-to-2 Differential-to-2.5V/3.3V ECL/ HiPerClockS™ LVPECL Fanout Buffer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The CLK, nCLK pair can accept most standard differential input levels.T h e ICS85311 is characterized to operate from either a 2.5V or a 3.3V power supply. Guaranteed output and partto-part skew characteristics make the ICS85311 ideal for those clock distribution applications demanding well defined performance and repeatability. ,&6 BLOCK DIAGRAM CLK nCLK Q0 nQ0 Q1 nQ1 PIN ASSIGNMENT Q0 nQ0 Q1 nQ1 1 2 3 4 8 7 6 5 Vcc CLK nCLK VEE ICS85311 8-Lead SOIC 3.90mm x 4.90mm x 1.37mm package body M Package Top View ICS85311AM www.icst.com/products/hiperclocks.html 1 REV. A JUNE 29, 2001 Integrated Circuit Systems, Inc. ICS85311 Low Skew, 1-to-2 Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer Type Output Output Power Input Input Power Pullup Description Differential output pair. LVPECL interface levels. Differential output pair. LVPECL interface levels. Negative supply pin. Connect to ground. Inver ting differential clock input. Positive supply pin. Connect to 2.5v or 3.3V. Pulldown Non-inver ting differential clock input. TABLE 1. PIN DESCRIPTIONS Number 1, 2 3, 4 5 6 7 8 Name Q0, nQ0 Q1, nQ1 VEE nCLK CLK VCC NOTE: Pullup and Pulldown refers to internal input resistors. See Table 2, Pin Characteristics, for typical values. TABLE 2. PIN CHARACTERISTICS Symbol CIN RPULLUP RPULLDOWN Parameter Input Capacitance Input Pullup Resistor Input Pulldown Resistor CLK, nCLK 51 51 Test Conditions Minimum Typical Maximum 4 Units pF KΩ KΩ ICS85311AM www.icst.com/products/hiperclocks.html 2 REV. A JUNE 29, 2001 Integrated Circuit Systems, Inc. ICS85311 Low Skew, 1-to-2 Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer 4.6V -0.5V to VCC + 0.5V -0.5V to VCC + 0.5V 112°C/W -65°C to 150°C ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC Inputs, VI Outputs, VO Package Thermal Impedance, θJA Storage Temperature, TSTG Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in the DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VCC = 3.3V±5%, TA = 0°C TO 70°C Symbol VCC IEE Parameter Positive Supply Voltage Power Supply Current Test Conditions Minimum 3.135 Typical 3.3 Maximum 3.465 25 Units V mA TABLE 3B. DIFFERENTIAL DC CHARACTERISTICS, VCC = 3.3V±5%, TA = 0°C TO 70°C Symbol IIH IIL VPP Parameter Input High Current Input Low Current CLK nCLK CLK nCLK Test Conditions VCC = VIN = 3.465V VCC = VIN = 3.465V VCC = 3.465V, VIN = 0V VCC = 3.465V, VIN = 0V -5 -150 1.3 VCC - 0.85 Minimum Typical Maximum 150 5 Units µA µA µA µA V V Peak-to-Peak Input Voltage 0.15 Common Mode Input Voltage; VEE + 0.5 VCMR NOTE 1, 2 NOTE 1: Common mode voltage is defined as VIH. NOTE 2: For single ended applications, the maximum input voltag for CLK, nCLK is VCC + 0.3V. TABLE 3C. POWER SUPPLY DC CHARACTERISTICS, VCC = 2.5V±5%, TA = 0°C TO 70°C Symbol VCC IEE Parameter Positive Supply Voltage Power Supply Current Test Conditions Minimum 2.375 Typical 2.5 Maximum 2.625 25 Units V mA ICS85311AM www.icst.com/products/hiperclocks.html 3 REV. A JUNE 29, 2001 Integrated Circuit Systems, Inc. ICS85311 Low Skew, 1-to-2 Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer Test Conditions CLK nCLK CLK nCLK VCC = VIN = 2.625V VCC = VIN = 2.625V VCC = 2.625V, VIN = 0V VCC = 2.625V, VIN = 0V -5 -150 1.3 VCC - 0.85 Minimum Typical Maximum 150 5 Units µA µA µA µA V V TABLE 3D. DIFFERENTIAL DC CHARACTERISTICS, VCC = 2.5V±5%, TA = 0°C TO 70°C Symbol IIH IIL VPP Parameter Input High Current Input Low Current Peak-to-Peak Input Voltage 0.15 Common Mode Input Voltage; VCMR VEE + 0.5 NOTE 1, 2 NOTE 1: Common mode voltage is defined as VIH. NOTE 2: For single ended applications, the maximum input voltag for CLK, .


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