LX5251CPW Semicoa Semiconductors, LX5251CPW Datasheet - Page 5

• Manufacturer Part Number: LX5251CPW
• Manufacturer: Semicoa Semiconductors
• Type: SCSI Terminationr

Specifications of LX5251CPW

• Number Of Bits: 9
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.25V
• Package Type: TSSOP
• Mounting: Surface Mount
• Pin Count: 24
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

Copyright © 2002
Rev. 1.1, 2006-02-27
1+, 2+, 3+, 4+, 5+, 6+, 7+, 8+, 9+
1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9-
TM
MASTER/SLAVE
DISCONNECT
DIFFSENSE
P
IN
V
GND
TERM
N
AME
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Negative signal termination lines for LVD mode. Signal termination lines for SE mode.
Positive signal termination lines for LVD mode. Psuedo-ground lines for SE mode.
Power supply pin for terminator. Connect to SCSI bus VTERM. Musts be
decoupled by one 4.7
absolutely necessary to connect this pin to the decoupling capacitor through a very low
impedance (big traces to PCB). Keeping distances very short from the decoupling
capacitors is somewhat layout dependent and some applications may benefit from high
frequency decoupling with 0.1
Enables/Disables terminator. See Power Down Function Table for logic levels
Terminator ground pin. Connect to ground.
Sometimes referred to as M/S pin in this datasheet. Used to select which terminator is the
controlling device. M/S pin High or Open enables the DIFFSENSE output drive. Please
see MASTER/SLAVE Function Table.
This is a dual function pin. It drives the SCSI bus DIFFSENS line. It is also the sense pin
to detect the SCSI bus mode (LVD, SE, or HVD). DIFFSENSE output drive can be
disabled with low level on the M/S pin. Please see DIFFSENSE and MASTER/SLAVE
Function Tables. Note: Must connect Diffsense signal to Diffsense pin of LX5251.
F U N C T I O N A L P I N D E S C R I P T I O N
Integrated Products Division
®
Microsemi
µ
F low-ESR capacitor for every three terminator devices. It is
µ
9-Line Multimode SCSI Terminator
F capacitors at V
D
ESCRIPTION
P
RODUCTION DATA SHEET
TERM
pin.
LX5251
.
Page 5