SOTINYLow Voltage, Zero-Delay, Active Transmission Line Clamp 3.3

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SOTINYLow Voltage, Zero-Delay, Active Transmission Line Clamp 3.3

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PI7AT04
SOTINYLow Voltage, Zero-Delay, Active Transmission Line Clamp
3.3V Line Clamping Near Zero Quiescent Supply Current: 10µA Maximum Active circuit clamping Capacitance: (typ.) High Protection Package: 6-pin SC70
Description
PI7AT04 actively clamps overshoot undershoot voltages transmission lines backplanes. Improperly terminated data lines have reflections that result lost data unreliable system behavior. PI7AT04 clamps undershoot overshoot voltages four lines. other options packages contact Pericom Marketing. Compared Schottky diodes, PI7AT04 uses less power requires additional drive power. avoiding passive termination/clamp technology, PI7AT04 power consumption very PI7AT04 ideal applications where characteristic impedance varies with system configuration. Changing characteristic impedance common when memory function cards added removed bus. PI7AT04 does replace parallel terminator resistors.
Benefits
Reduced Limits high-frequency ring voltage Minimum Power Consumption Higher Noise Margin Minimal Line Loading
Applications
Termination Backplane Termination Termination
Product Configuration
Product Description
Numbe 6-pin, SC70 Name cription Line Termination Line Termination Line Termination Line Termination Ground Positive Supply Voltage
6-Pin
Functional Block Diagram
Control Input
PS8588A
04/03/02
PI7AT04 SOTINY Voltage, Zero-Delay, Active Transmission Line Clamp
Absolute Maximum Ratings
Voltage Storage Temperature Lead Temperature (Soldering, seconds) rmal Information MSOP Continuous Power Dissipation: derate 8.7mW/°C above 70°C) SC70/SOT23 Continuous Power Dissipation: derate 7.0mW/°C above 70°C) 650mW 550mW 6.5V 65°C 150°C 300°C
Electrical Characteristics
Parame
Over Operating Temperature Range, unless otherwise noted.
Symbol Note Note
Conditions
Units
Line Signal Voltage Above Line Signal Voltage Below Input Line Capacitance Input High Current Input Current Supply Voltage Range Quiescent Supply Current Protection
Line Voltage VLINE VDD, 5.5V VLINE 5.5V
lines floating MIL- STD- 883, Method 3015
3.3V Over Operating Temperature Range, unless otherwise noted.
Parame Line Signal Voltage Above Line Signal Voltage Below Input Line Capacitance Input High Current Input Current Supply Voltage Range Quiescent Supply Current Protection
Symbol Note Note
Conditions
Typ.
Units
Line Voltage VLINE VDD, 3.6V VLINE 3.6V
lines floating MIL- STD- 883, Method 3015
Notes: Capacitance parameters guaranteed design. Maximum line voltage clamped during transient.
PS8588A
04/03/02
SOTINY Voltage, Zero-Delay,
PI7AT04
Active Transmission Line Clamp
Application Information
Driver 74VCX16244 Transmission Line Receiver 74VCX16244
PI7AT04
Figure Test Diagram
6.5V
3.5V
10ns/div.
Figure VCX16244 (Vcc 3.6V) output after driving 3-inch transmission line. Signal capture line
6.5V
3.6V
3.5V
10ns/div.
Figure VCX16244 (Vcc 3.6V) output after driving 3-inch transmission line driving PI7AT04 input. Signal seen input pin. Signal capture when 3.6V.
PS8588A 04/03/02
PI7AT04 SOTINY Voltage, Zero-Delay, Active Transmission Line Clamp
6-Pin SC70 Package
Notes: Controlling dimensions millimeters Ref: JEDEC MO-203AB
Ordering Information
Part Numbe PI7AT04CX Numbe Line rminations rating rature Range 40°C 85°C Package Type SC70 Package
Pericom Semiconductor Corporation 2380 Bering Drive Jose, 95131 1-800-435-2336 (408) 435-1100 http://www.pericom.com
PS8588A 04/03/02

SOTINYLow Voltage, Zero-Delay, Active Transmission Line Clamp 3.3

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