Bolivar Drive, P.O. Box 547, Bradford, PA 16701 USA
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814-362-5536
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Fax: 814-362-8883
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www.koaspeer.com
G-4
Diode Terminator
DNA SERIES
Diode Terminator
Low parasitics, fast reverse recovery time, and a
low forward voltage characteristic make KOA’s DNA
Schottky diode network an excellent bus terminator
for very high speed I/O. This network offers the
designer a single package solution to address
overshoot and undershoot problems, ringing, and
bus reflections that are common to high speed I/O.
Today these networks are commonly used to
optimize bus performance in high end computers,
external data storage peripherals, LAN networks,
and many other applications where high transfer
rates are necessary.
Features
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Negligible reverse recovery time
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Low capacitance
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Low forward voltage drop
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18-channel terminator in a single package
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Resolved bus impedance mismatch
Applications
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Termination of data/control signals @ ≥66 MHz
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Dynamic RAM bus termination
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RISC architecture
Available Pin Configurations
n
= Number of Pins
See physical configurations on page G-5
for available pin/package configurations.
Electrical Characteristics
Supply Voltage
(VDD) . . . . . . . . . . . . .
-.3V to +7V
Channel Clamp
Current . . . . . . . . . . . . .
±50mA
Package Power
Rating @ 70°C . . . . . . .
1W
Operating
Temperature . . . . . . . . . .
0°C to +70°C
Storage Temperature. . . .
-65°C to +150°C
Forward Voltage
(to VDD @ 50ma). . . . .
0.55V to 0.90V
Forward Voltage
(to GND @ 50ma). . . . .
0.55V to 0.85V
Reverse Recovery
Time (@ 50ma) . . . . . . .
<400ps
Channel Leakage
(0<Vin<VDD) . . . . . . .
0.1µA to 5µA
Input Capacitance
(If = 1MHz,
Vin = 2.5v) . . . . . . . . . .
5pF
ESD Protection . . . . . . .
4KV min.
Circuit Schematic
G