lx5242cpwk Microsemi Corporation, lx5242cpwk Datasheet

lx5242cpwk

Manufacturer Part Number

lx5242cpwk

Description

Multimode Scsi Terminator

Manufacturer

Microsemi Corporation

Datasheet

1.LX5242CPWK.pdf (7 pages)

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Rev. 1.4,2000-11-28

H E

terminator that is compatible with to the SCSI

SPI02 (Ultra2 SCSI), SCSI SPI-3 (Ultra3 SCSI or

Ultra160

(Ultra320) specifications developed by the T10

standards committee for low voltage differential

(LVD) termination, while providing backwards

compatibility to the SCSI, SCSI-2, and SPI single-

ended specifications.

permits the use of legacy devices on the bus

without hardware alterations.

selection is achieved through voltage detection on

the Diffsense line.

UltraMAX technology which delivers the ultimate

in SCSI bus performance while saving component

cost and board area. Elimination of the external

capacitors also mitigates the need for a lengthy

capacitor selection process. The individual high

bandwidth

separation and reduce channel to channel noise and

cross talk. The high bandwidth architecture insures

ULTRA2 performance while providing a clear

migration path to ULTRA3 and beyond.

differential sense (DIFFSENSE) pin supplies a

IMPORTANT: For the most current data, consult MICROSEMI ’s website: http://www.microsemi.com

The LX5241/42/43 is a multimode SCSI

The

When the LX5241/42/43 is enabled, the

2000

N F I N I T E

LX5241/42/43

SCSI),

drivers

and

(+)

(-)

also

0 to 70

O W E R

Multimode compatibility

pending

( C)

11861 W

utilizes

maximize

Automatic mode

O F

ESTERN

OLTAGE

L X 5 2 4 1

SCSI

Linfinity’s

I N

LX5241CDBK

LX5242CDBK

channel

N N O V A T I O N

SPI-4

Plastic TSSOP

36-Pin

VENUE

I N I T Y

Append the letter “T” to the part number. (i.e. LX5241CDBT)

, G

voltage between 1.2V and 1.4V. In application

this pin is tied to the DIFFSENSE input of the

corresponding LVD transceivers.

enables

DIFFSENSE is capable of supplying a maximum

of 15mA. Tying the DIFFSENSE pin high places

the LX5241/42/43 in a HI Z state indicating the

presence of an HVD device. Tying the pin low

places the part in a single-ended mode while also

signaling the multimode transceiver to operate in a

single-ended mode.

ARDEN

configurable peripherals, the LX5241/42/43 have

a TTL compatible sleep/disable mode. During

this sleep/disable mode, power dissipation is

reduced to a meager 15uA while also placing all

outputs in a HI Z state. Also during sleep/disable

mode, the DIFFSENSE function is disabled and is

placed in a HI Z state.

master / slave function. Driving this pin high or

floating the pin enables the 1.3V DIFFSENSE

reference. Driving the pin low disables the on

board DIFFSENSE reference and enables use of

an external master reference device.

Recognizing

Another key feature of the LX5241/42/43 is the

I C R O E L E C T R O N I C S

Note: Available in Tape & Reel.

ROVE

the

, CA. 92841, 714-898-8121, F

the

LVD

LX5241CPWK

LX5242CPWK

-100mV

needs

Plastic TSSOP

100mV

24-Pin

transceiver

portable

™

This action

L X 5 2 4 1

function.

N C

: 714-893-2570

= V

and

NEGATED

(-)

- V

(+)

, Logic = 0

LX5243CPW

LX5241/5242/5243

Plastic TSSOP

28-Pin

Auto-Selectable LVD or Single-

Ended Termination

3.0pF Maximum Disabled Output

Capacitance

Fast Response, No External

Capacitors Required

Compatible with Active Negation

Drivers

15µA Supply Current in

Disconnect Mode

Logic Command Disconnects All

Termination Lines

Diffsense Line Driver

Ground Driver Integrated for

Single-Ended Operation

Current Limit and Thermal

Protection

Hot-Swap Compatible (Single-

Ended)

Ultra160 compliant

See LX5245/5246 for LVD

Termination Only

Pin Compatible With DS2119

and UCC5630

Related parts for lx5242cpwk

lx5242cpwk Summary of contents

Page 1

... Plastic TSSOP Plastic TSSOP PW 36-Pin 24-Pin LX5241CDBK LX5241CPWK LX5242CDBK LX5242CPWK Note: Available in Tape & Reel. Append the letter “T” to the part number. (i.e. LX5241CDBT ...

Page 2

LX5241/5242/5243 ...

Page 3

UltraMAX ...

Page 4

LX5241/5242/5243 Parameter Single-Ended Termination Section Ground Driver Impedance Thermal Shutdown DISCONNECT Section DISCONNECT Thresholds Input Current ...

Page 5

UltraMAX Pin Designator Rev. 1.4 11/ ...

Page 6

LX5241/5242/5243 ...

Page 7

UltraMAX ...

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