PACS1284 Datasheet, PDF (1/7 Pages) California Micro Devices Corp – P/ACTIVE IEEE 1284 ECP/EPP TERMINATION NETWORK

IEEE 1284 ECP/EPP Termination Network
PACS1284
Features
• Single chip IEEE 1284 parallel port termination
• 28-pin QSOP package, smallest physical
solution
• 17 terminating lines in a single package
• In-system ESD protection to ±8KV, HBM
• In-system ESD protection to ±4KV per
IEC 61000-4-2
• Protects downstream devices to 30V
• Lead-free version available
Applications
• ECP/EPP Parallel Port termination
• PC Peripherals
• Notebook and Desktop computers
• Engineering Workstations and Servers
Product Description
California Micro Devices’ PACS1284 Parallel Port Ter-
mination Network provides a complete integrated solu-
tion for the entire IEEE 1284 interface in a single
QSOP package.
To support the bi-directional transfer data rates of
enhanced high-speed parallel ports, the IEEE 1284
Standard recommends a combined termination/pull-up
filter network between the driver/receiver and the cable
at both ends of the parallel port interface. In addition,
government EMC compatibility requirements impose
strict filtering requirements on the parallel port. The
California Micro Devices PACS1284 addresses all
these requirements by providing a seventeen-line IEEE
1284-compliant network in a thin film integrated circuit.
The device provides a complete parallel port termina-
tion solution for space critical applications by integrat-
ing a total of 60 discrete components. In addition, all
the I/O pins are ESD protected for contact discharges
up to ±4KV per the Human Body Model (HBM), with the
output pins having the highest probability of ESD pulse
exposure protected to ±8KV (HBM), thereby providing
the necessary robustness for the port’s application
environment.
The PACS1284 is manufactured in a 28-pin QSOP
package and is available with optional lead-free finish-
ing.
Electrical Schematic
PACS1284-02:
R1 = 2.2kΩ
R2 = 33Ω
R3 = 2.2kΩ
C = 220pF
28
27 26
25
24
23 22 21 20 19
PACS1284-04:
R1 = 4.7kΩ
R2 = 33Ω
R3 = 4.7kΩ
C = 180pF
18
17
16
15
R1
R3 R1
R1 R1
R1
R1
R1
R1
R3
R1
R3
R1
R3
R1
R1
R3
R2
R2
R2
R2
R2
R2
R2
R2
R2
C
CC
C
C
C
C
C
C
C
C
C
C
C
C
C
C
1
2
3
4
5
6
78
9 10
11 12
13
14
© 2004 California Micro Devices Corp. All rights reserved.
06/07/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: [phone] ▲ Fax: [phone] ▲ www.calmicro.com
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