CALIFORNIA MICRO DEVICES
SN 74S1051
12-BIT SCHOTTKY BARRIER DIODE BUS TERMINATOR
Features
24 integrated diodes in a single package
offers 12 channel, dual rail clamping action
Provides proper bus termination independent of
external line or card loading conditions
Schottky diode technology; excellent forward
voltage and reverse recovery characteristics
Enhanced performance over existing device
16-pin SOIC package
Applications
Local high speed bus termination for all popular
RISC and embedded microprocessor applications
High speed memory and SDRAM memory
bus termination
Product Description
Reflections on high speed data lines lead to undershoot and overshoot disturbances which may result in improper
system operation. Resistor terminations, when used to terminate high speed data lines, increase power consumption
and degrade output (high) levels resulting in reduced noise immunity. Schottky diode termination is the best overall
solution for applications in which power consumption and noise immunity are critical considerations.
This integrated Schottky diode network provides very effective termination performance for high speed data lines
under variable loading conditions. The device supports up to 12 terminated lines per package each of which can
be simultaneously clamped to both ground and power supply rail.
SCHEMATIC CONFIGURATION
D01 D02 D03 D04
2
3
4
5
D05
6
D06 D07 D08
7
10
11
D09 D10 D11
12
13
14
D12
15
V
DD
1
V
DD
16
8
GND
9
GND
©1998 California Micro Devices Corp. All rights reserved.
P/Active is a registered trademark and PAC is a
©1998 California
®
Micro Devices Corp. All rights reserved. trademark of California Micro Devices.
4 / 98
4 / 98
C0220298D
215 Topaz Street, California 95035
Tel: (408) 263-3214 (408) 263-7846263-7846
Fax: (408)
www.calmicro.com
215 Topaz Street, Milpitas,Milpitas, California 95035 (408) 263-3214
Tel:
Fax:
www.calmicro.com
1
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
