PI7AT04 Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – SOTINY Low Voltage, Zero-Delay, Active Transmission Line Clamp

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SOTINY^TM Low Voltage, Zero-Delay,
Active Transmission Line Clamp
Features
ƒ 5V and 3.3V Line Clamping
ƒ Near Zero Quiescent Supply Current: 10µA Maximum
– Active circuit clamping
ƒ Low Capacitance: 5pF (typ.)
ƒ High 4kV ESD Protection
ƒ Packaging (Pb-free & Green Available):
- 6-pin SC70 (C)
Benefits
ƒ Reduced EMI
– Limits high-frequency ring voltage
ƒ Minimum Power Consumption
ƒ Higher Noise Margin
ƒ Minimal Line Loading
Applications
ƒ CPU Termination
ƒ Backplane Termination
ƒ Termination
Product Pin Configuration
T0 1
T1 2
GND 3
6-Pin
C
6 VDD
5 T3
4 T2
Functional Block Diagram
V_DD
Description
The PI7AT04 actively clamps overshoot and undershoot voltages
on transmission lines and backplanes. Improperly terminated data
lines have reflections that can result in lost data or unreliable
system behavior.
The PI7AT04 clamps undershoot and overshoot voltages for up
to four lines. For other options and packages contact Pericom
Marketing.
Compared to Schottky diodes, the PI7AT04 uses less power and
requires no additional drive power. By avoiding a passive termina-
tion/clamp technology, PI7AT04 power consumption is very low
at 5V.
The PI7AT04 is ideal in applications where characteristic imped-
ance varies with system configuration. Changing characteristic
impedance is common when memory or function cards are added
or removed on a bus.
The PI7AT04 does not replace parallel terminator resistors.
Product Pin Description
Pin Number
6-pin, SC70
Name
Description
1
T0 Line Termination
2
T1 Line Termination
4
T2 Line Termination
5
T3 Line Termination
3
GND Ground
6
V_DD Positive Supply Voltage
Τ₀
Control
Input
Τ₃
1
PS8588C
08/02/04