DS2119ME Maxim Integrated Products, DS2119ME Datasheet

IC TERM SCSI LVD/SE ULT3 28TSSOP

DS2119ME

Manufacturer Part Number
DS2119ME
Description
IC TERM SCSI LVD/SE ULT3 28TSSOP
Manufacturer
Maxim Integrated Products
Type
SCSI, LVD, SEr
Datasheet

Specifications of DS2119ME

Number Of Terminations
9
Voltage - Supply
4 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-TSSOP
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Operating Temperature Range
0 C to + 70 C
Product
SCSI
Resistance
110 Ohms
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS2119ME
Manufacturer:
Maxim/Dal
Quantity:
837
Part Number:
DS2119ME
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
DS2119ME+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
DS2119ME+T&R
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
DS2119ME+TR
Manufacturer:
MAXIM
Quantity:
11 269
Part Number:
DS2119ME+TR/C05
Manufacturer:
MAX
Quantity:
16 321
Part Number:
DS2119ME/T&R
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS2119ME/T&R
Quantity:
199
Company:
Part Number:
DS2119MET
Quantity:
2 500
FEATURES
ORDERING INFORMATION
+ Denotes a lead-free/RoHS-compliant package.
* The top mark includes a "+" on lead-free packages.
DETAILED DESCRIPTION
The DS2119M Ultra3 LVD/SE SCSI terminator is both a low-voltage differential (LVD) and single-
ended (SE) terminator. The multimode operation enables the designer to implement LVD in current
products while allowing the end-user SE-backward compatibility with legacy devices. If the device is
connected in an LVD-only bus, the DS2119M will use LVD termination. If any SE devices are connected
to the bus, the DS2119M will use SE termination. This is accomplished automatically inside the part by
sensing the voltage on the SCSI bus DIFFSENS line.
For the LVD termination, the DS2119M integrates two current sources with nine precision resistor
strings. For the SE termination, one regulator and nine precision 110Ω resistors are used. Three
DS2119M terminators are needed for a wide SCSI bus.
www.maxim-ic.com
DS2119ME
DS2119ME+
DS2119ME/T&R
DS2119ME+T&R
Fully Compliant with SCSI SPI-2, SPI-3,
SPI-4, Ultra160, and Ultra320
Provides Multimode Low-Voltage
Differential/Single-Ended (LVD/SE)
Termination for Nine Signal Line Pairs
Autoselection of LVD or SE Termination
5% Tolerance on SE and LVD Termination
Resistance
Low Power-Down Capacitance of 3pF
On-Board Thermal Shutdown Circuitry
SCSI Bus Hot Plug Compatible
Fully Supports Actively Negated SE SCSI
Signals
PART
VOLTAGE
(V)
5
5
5
5
TEMP RANGE PIN-PACKAGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ultra3 LVD/SE SCSI Terminator
1 of 9
28 TSSOP (0.173")
28 TSSOP (0.173")
28 TSSOP (0.173")/Tape
and Reel
28 TSSOP (0.173")/Tape
and Reel
PIN CONFIGURATION
HS GND
VREF
GND
R3N
R2N
R3P
R4N
R5N
R2P
R4P
R5P
ISO
RIP
RIN
1
10
11
12
13
2
3
5
6
7
8
9
14
4
DS2119M
TSSOP
26
25
23
22
21
20
19
18
17
16
15
28
27
24
TOP MARK*
DS2119M
DS2119M
DS2119M
DS2119M
DS2119M
R9N
R9P
R8N
R8P
R7N
HS GND
R7P
R6N
R6P
DIFF_CAP
DIFFSENSE
MSTR/SLV
TPWR
TPWR
REV: 010406

Related parts for DS2119ME

DS2119ME Summary of contents

Page 1

... DS2119ME 5 DS2119ME+ 5 DS2119ME/T&R 5 DS2119ME+T& Denotes a lead-free/RoHS-compliant package. * The top mark includes a "+" on lead-free packages. DETAILED DESCRIPTION The DS2119M Ultra3 LVD/SE SCSI terminator is both a low-voltage differential (LVD) and single- ended (SE) terminator. The multimode operation enables the designer to implement LVD in current products while allowing the end-user SE-backward compatibility with legacy devices. If the device is connected in an LVD-only bus, the DS2119M will use LVD termination ...

Page 2

REFERENCE DOCUMENTS Small Computer Systems Interface (SCSI-3) SCSI Parallel Interface (SPI) Small Computer Systems Interface (SCSI-3) SCSI Parallel Interface 2 (SPI-2) Project: 1142-M, 1998 Small Computer Systems Interface (SCSI-3) SCSI Parallel Interface 3 (SPI-3) Project: 1302-D, 1999 Small Computer Systems ...

Page 3

DS2119M. The DS2119M should be placed as close as possible to the SCSI connector to minimize signal and power-trace length, thereby resulting in less input capacitance and reflections, which can degrade the bus signals. To maintain ...

Page 4

Figure 1. DS2119M Block Diagram ...

Page 5

Figure 2. SCSI Bus Configuration ...

Page 6

PIN DESCRIPTION PIN NAME 1 VREF 2–5, 7–12, RxP, 18–21, 23–26 RxN GND 13 ISO 14 GND 15 MSTR/SLV 16 DIFFSENSE DIFFSENSE. Output to drive the SCSI bus DIFFSENS line. 17 DIFF_CAP 27, 28 TPWR RECOMMENDED OPERATING ...

Page 7

SINGLE-ENDED CHARACTERISTICS PARAMETER SE Termination Resistance SE Voltage Reference SE Output Current Output Capacitance LOW-VOLTAGE DIFFERENTIAL CHARACTERISTICS PARAMETER Differential Mode Termination Resistance Common Mode Termination Resistance Differential Mode Bias Common Mode Bias DC CHARACTERISTICS PARAMETER Termpower Current Input Leakage High ...

Page 8

REGULATOR CHARACTERISTICS (T = 0°C to +70°C) A PARAMETER Line Regulation Load Regulation Current Limit Sink Current NOTES 3V. LINE 0.2V. LINE 3) Guaranteed by design. 4) All lines open ...

Page 9

... No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time The Maxim logo is a registered trademark of Maxim Integrated Products, Inc. The Dallas logo is a registered trademark of Dallas Semiconductor Corporation © 2006 Maxim Integrated Products • Printed USA ...

Related keywords