LX5242CDBK-TR [MICROSEMI]
SCSI Terminator, 9-Line, 105ohm, PDSO36, PLASTIC, SSOP-36;
| 型号： | LX5242CDBK-TR |
| 厂家： | 
Microsemi |
| 描述： | SCSI Terminator, 9-Line, 105ohm, PDSO36, PLASTIC, SSOP-36 光电二极管 接口集成电路 |
| 文件： | 总7页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
™
UltraMAX
LX5241/5242/5243
MULTIMODE SCSI TERMINATOR
P
R O D U C T I O N D A T A S H E E T
T
H E
I
N F I N I T E
P
O W E R O F
I N N O V A T I O N
KEY FEATURES
DESCRIPTION
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
The LX5241/42/43 is
a
multimode SCSI
voltage between 1.2V and 1.4V. In application
this pin is tied to the DIFFSENSE input of the
corresponding LVD transceivers. This action
terminator that is compatible with to the SCSI
SPI02 (Ultra2 SCSI), SCSI SPI-3 (Ultra3 SCSI or
Ultra160 SCSI), and pending SCSI SPI-4
(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. Multimode compatibility
permits the use of legacy devices on the bus
without hardware alterations. Automatic mode
selection is achieved through voltage detection on
the Diffsense line.
enables
the
LVD
transceiver
function.
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.
Recognizing the needs of portablnd
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.
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
The
LX5241/42/43
utilizes
Linfinity’s
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 drivers also maximize channel
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.
Another key feature of the LX5241/42/43 is the
master / slave function. Dng this pin high or
floating the pin enables the 1.3V DIFFSENSE
reference. Driving the ow disables the on
board DIFFSENSE reference and enables use of
an external master reference device.
When the LX5241/42/43 is enabled, the
differential sense (DIFFSENSE) pin supplies a
IMPORTANT: For the most current data, consult MICROSEMI’s website: htww.microsemi.com
PRODUCT HIGHLIGHT
BUS
VOLTAGE
6
VOD
V
OD = V(-) - V(+), Logic =0
V
(+)
NEGATED
100mV
0V
-100mV
V
(-)
-
-
LX5241
LX41
+
+
PACKAGE ORDER INFO
Plastic TSSOP
36-Pin
Plastic TSSOP
24-Pin
Plastic TSSOP
DB
PW
PW
28-Pin
TA (°C)
RoHS Compliant / Pb-free
Transition DC: 0442
RoHS Compliant / Pb-free
Transition DC: 0518
LX5241CDBK
LX5242CDBK
LX5241CPWK
LX5242CPWK
LX5243CPW
-
0 to 70
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX5241CDB-TR)
I N I N I T Y I C R O E L E C T R O N I C S N C
11861 WESTERN ROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
L
F
M
I
.
Copyright © 2000
Rev. 1.5a,2005-02-28
1
A
VENUE, GARDEN G
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX5241/5242/5243
UltraMAX
M U L T I M O D E S C S I T E R M I N A T O R
P R O D U C T I O N D A T A S H E E T
ABSOLUTE MAXIMUM RATINGS (Note 1)
PACKAGE PIN OUTS
TermPwr Voltage .................................................................................................+7V
Operating Junction Temperature
Plastic (DB, PW Packages) .......................................................................... 150°C
Storage Temperature Range ..............................................................-65°C to 150°C
Lead Temperature (Soldering, 10 seconds) .................................................... 300°C
RoHS / Pb-free Peak Package Solder Reflow Temp (40 sec. max. exp.)...260°C(+0, -5)
1
36
35
34
33
32
N..
VTERM
2
N.C.
HVD
3
N.C.
LVD
4
1+
SE
5
1-
9-
631
7
2+
9+
30
29
28
27
26
25
24
23
22
2-
8-
8
HEATSINK
8+
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified
terminal.
9
HEATSINK
HEATSINK
HEATSINK
HEATSINK
7-
10
11
12
13
14
15
1621
17
18
HEATSINK
3+
3-
THERMAL DATA
4+
7+
4-
6-
DB PACKAGE:
5+
5-
6+
DIFF B
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
PW PACKAGE:
50°C/W
20
19
DISCONNECT
GND
DIFFSENSE
MASTER/SLAVE
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
100°C/W
DB PACKAGE (Top View)
Junction Temperature Calculation: TJ = TA + (PD x θJA).
LX5241/5242 ("N.C." = No Internal Connection)
The θJA numbers are guidelines for the thermal performance of the device/pc-ard
system. All of the above assume no ambient airflow.
1+
1
24
23
22
21
20
VTERM
1-
2
N.C.
MASTER / SLAVE FUNCTION TABLE
3
2+
9-
4
2-
9+
MASTER /
SLAVE
DIFFSENSE
Status
5
3+
8-
619
7
3-
8+
18
17
16
15
14
13
4+
7-
L*
H
HI Z
1.3V
1.3V
0mA
15mA urce
15mA Source
8
4-
7+
9
5+
5-
6-
10
11
12
6+
Open (Pull-up)
DISCONNECT
GND
DIFFSENSE
MASTER/SLAVE
* When in Low state, terminator will detect state of DIFFSENSE line.
PW PACKAGE (Top View)
LX5241/5242 ("N.C." = No Internal Connection)
DIFFSENSE / POWER UP / POWER DOWN FUNCTION TABLE
LX5241/5243
LX5242
DIFF
Outputs
Quiescent
Current
DISCONNECT DISCONNECT
SENSE
Status
Type
N.C.
1
28
27
26
25
24
VTERM
1+
2
N.C.
1-
3
9-
L
L
L
H
H
H
L < 0.5V
Enable
S.E.
7mA
4
2+
9+
5
2-
8-
623
7
N.C.
8+
22
21
20
19
18
17
16
15
3+
N.C.
8
3-
7-
7 - 1.9V Enable
LVD
21mA
9
4+
7+
10
11
12
13
14
4-
6-
5+
5-
6+
DIFFB
H > 2.4V
X
Disable
Disable
HI Z
HI Z
1mA
DISCONNECT
GND
DIFFSENSE
MASTER/SLAVE
H
Open
L
PW PACKAGE (Top View)
LX5243 ("N.C." = No Internal Connection)
10µA
Open
RoHS / Pb-free 100% Matte Tin Lead Finish
Copyright © 2001
Rev. 1.5a 02/13
2
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX5241/5242/5243
UltraMAX
M U L T I M O D E S C S I T E R M I N A T O R
P R O D U C T I O N D A T A S H E E T
RECOMMENDED OPERATING CONDITIONS
(Note 2)
Recommended Operating Conditions
Parameter
Symbol
Units
Min.
Typ.
Max.
Termpwr Voltage
Signal Line Voltage
LVD
SE
VTERM
3.0
3.5
0
5.25
5.25
5.0
V
V
V
V
0
VTERM
Disconnect Input Voltage
Operating Virtual Junction Temperature Range
LX5241C / 5242C / 5243C
0
70
°C
Note 2. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperature range of 0°C ≤ TA ≤ 70°C, TermPwr = 4.75V.
For the LX5241/5243 DISCONNECT = L, for the LX5242 DISCONNECT = H. Low duty cycle pulse testing techniques are used which maintains junction and
case temperatures equal to the ambient temperature.)
LX5241 / 5242 / 5243
Parameter
Symbol
Test Conditions
Units
Min. Typ.
Max.
LVD Terminator Section
TermPwr Supply Current
LVD ICC All term lines = Open
25
15
30
35
1.375
125
110
300
mA
µA
V
mV
Ω
LX5241/5243: DISCONNECT > 2X5242: DISCONNECT < 0.8V
Common Mode Voltage
Offset Voltage
Differential Terminator Impedance
Common Mode Impedance
Output Capacitance
VCM
VFSB
ZD
1.125
100
1.25
112
105
200
2.5
Open circuit between - and + (see Note 3)
VOUT Differential = -1V to 1V
100
100
ZCM
CO
ILEAK
0V to 2.5V
Ω
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V,
VLINE = 0 to 4V, TA 5°C
pF
µA
Output Leakage
2
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V,
VTERM = 0V, VLINE = 2.7V
1
µA
ms
Mode Change Delay
tDF
DIFFSENSE = 14V to 0V
115
DIFFSENSE Section
DIFFSENSE Output Voltage
DIFFSENSE Output Source Current
DIFFSENSE Sink Current
VDIFF
IDIFF
1.2
5.0
1.3
1.4
15.0
200
10
V
VDIFF = 0V
mA
µA
µA
ISINK(DIFF) VDIFF = 2.75V
ILEAK(DIFF) LX/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V,
TA = 25°C
DIFFSENSE Output Leakage
Single-Ended Termination Section
Termpwr Supply Current
SE ICAll term lines = Open, Master/Slave = 0V
7
214
15
10
226
35
mA
mA
µA
V
mA
mA
pF
All term lines = 0.2V, Master/Slave = 0V
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V
Terminator Output High Volt
Output Current
Sink Current
Output Capacitance
Leakage Current
VO
IO
2.6
21
45
2.85
23
65
VOUT = 0.2V
24
2
ISINK
CO
VOUT = 4V, All lines
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V,
VOUT = 0 to 4V, TA = 25°C
2.5
ILEAK
µA
LX5241/5243: DISCONNECT > 2.0V, LX5242: DISCONNECT < 0.8V,
VTERM = Open, VLINE = 2.7V, TA = 25°C
1
µA
Note 3. Open circuit failsafe voltage.
Copyright © 2001
Rev. 1.5a 02/13
3
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX5241/5242/5243
UltraMAX
M U L T I M O D E S C S I T E R M I N A T O R
P R O D U C T I O N D A T A S H E E T
ELECTRICAL CHARACTERISTICS
LX5241 / 5242
Parameter
Symbol
Test Conditions
Units
Min. Typ.
Max.
Single-Ended Termination Section (continued)
Ground Driver Impedance
Thermal Shutdown
ZG
I = 1mA
100
Ω
150
°C
DISCONNECT Section
DISCONNECT Thresholds
Input Current
VTH
IIL
IIL
IIH
IIH
0.8
2.0
10
V
LX5241/43
LX5242
LX5241/43
LX5242
DISCONNECT = 0V
DISCONNECT = 0V
DISCONNECT = 2.4V
DISCONNECT = 2.4V
µA
nA
nA
µA
100
100
10
MASTER / SLAVE Section
MASTER / SLAVE Thresholds
Input Current
VTH (MS)
IIL (MS)
0.8
2.0
10
V
µA
nA
MASTER / SLAVE = 0V
IIH (MS) MASTER / SLAVE = 2.4V
100
BLOCK DIARAM
1 of 9
SE
2.85V, 22.5mA
Power ON
VTERM
DISCONNECT
S.E.
2.2V
Internal VREF
1.30V
1.07mA
LVD (-)
/ SE
SE
DISC/HVD
LVD
52.5
52.5
200
LVD
1.25V
LVD (+)
/ SE (Pseudo-GND)
SE
HVD
LVD
10mA
M/S
20
1.07mA
DIFFSENSE
DIFB
MODE Control & Delay
LATCH
SE
SE
HVD
LVD
Window
Comp.
HVD
LVD
POWER
ON
&
MODE
DELAY
Power ON
FIGURE 1 — LX5241/5242 Block Diagram
Copyright © 2001
Rev. 1.5a 02/13
4
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX5241/5242/5243
UltraMAX
M U L T I M O D E S C S I T E R M I N A T O R
P R O D U C T I O N D A T A S H E E T
FUNCTIONAL PIN DESCRIPTION
Pin
Designator
Description
1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9-6
Negative signal termination lines for LVD mode. Signal termination lines for SE mode.
1+, 2+, 3+, 4+, 5+, 6+, 7+, 8+, 9+ Positive signal termination lines for LVD mode. Pseudo-ground lnes for SE mode.
VTERM
Power supply pin for terminator. Connect to SCSI bus TERMPWR. Must be decoupled by one 4.7µF
low-ESR capacitor for every three terminator devices. Iis absolutely necessary to connect this pin to
the decoupling capacitor through a very low impedance (big traces on PCB). Keeping distances very
short from the decoupling capacitors to the V
pin is also critical. The value of the decoupling
capacitor is somewhat layout dependant andTEsRoMmpplications may benefit from high-frequency
decoupling with 0.1µF capacitors right at VTERM pin.
DISCONNECT6
GND6
Enables / disables terminator. See Power Down Function Table for logic levels per device.
Terminator ground pin. Connect to ground.
MASTER / SLAVE6
Sometimes referred to as M/S pin in this data sheet. Used to select which terminator is the control-
ling device. MASTER/SLAVE pin High or Open enables the DIFFSENSE output drive. Please see
MASTER/SLAVE Function Table.
DIFFSENSE6
DIFFB6
This is a dual function pin. It drives 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
MASTER/SLAVE pin. Please see SENSE and MASTER/SLAVE Function Tables. Internally
connected to DIFFB pin through 20kOhm resistor.
Internally connected to DIFFSENSE pin through 20kOhm resistor. It can be used as a mode sense
pin when the device is a nocontrolling terminator (MASTER/SLAVE pin is Low). An RC filter
(20kOhm / 0.1µF) is not rered on the LX5241/42/43, as it has an internal timer.
SE6
LVD6
Single-ended output; when High, terminator is operating in SE mode.
Low Voltage Differenutput. When High, terminator is operating in LVD mode.
High Voltage Differential output. When High, terminator is operating in HVD mode.
HVD6
HEATSINK6
Attached to die mounting pad, but not bonded to GND pin. Pins should be considered a heat sink
only, and not a true ground connection. It is recommeneded that these pins be connected to ground,
but can be left floating.
Copyright © 2001
Rev. 1.5a 02/13
5
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX5241/5242/5243
UltraMAX
M U L T I M O D E S C S I T E R M I N A T O R
P R O D U C T I O N D A T A S H E E T
APPLICATION SCHEMATIC
H
O
S
T
P
R
E
I
P
H
E
R
A
L
T
E
R
M
P
O
W
E
R
T
D
E
R
M
P
O
W
E
R
V
1
-
1
1
-
+
V
V
V
T
T
T
E
E
E
R
R
R
M
T
T
T
E
E
E
R
M
M
M
1
+
D
a
t
a
L
i
n
s
e
(
9
)
L
L
X
X
5
5
4
4
4
2
2
1
1
1
4
4
4
/
/
/
2
2
2
L
L
L
X
5
5
5
4
4
4
2
2
2
1
1
1
4
4
4
/
2
2
2
4
4
4
3
3
3
9
9
-
+
9
9
-
+
L
L
L
X
X
X
5
5
5
2
2
2
4
4
4
3
3
3
D
I
S
C
O
N
E
N
C
T
I
S
C
O
N
E
N
C
T
D
M
G
I
I
I
S
S
S
C
C
C
O
O
O
N
N
N
E
E
E
N
N
N
C
C
C
T
T
T
D
D
D
I
I
I
S
S
S
C
C
C
O
O
O
N
N
N
E
E
E
N
N
N
C
C
C
T
T
T
/
/
/
S
S
S
M
M
M
/
/
/
S
S
S
D
I
F
F
S
E
N
S
E
D
D
I
I
I
F
F
F
F
F
F
S
E
E
E
N
N
N
S
S
S
E
E
E
N
N
N
D
D
D
G
G
G
N
N
N
D
D
D
D
D
D
I
I
I
F
F
F
F
F
F
B
B
B
*
I
I
I
F
F
F
F
F
F
B
B
B
*
*
*
V
1
1
1
1
-
+
M
R
+
4
.
7
µ
F
4
.
7
µ
F
D
a
t
a
L
i
n
s
e
(
9
)
L
L
X
X
5
5
2
2
X
/
9
9
-
+
9
9
-
+
D
M
G
D
D
S
D
I
F
F
S
E
N
S
E
*
V
1
1
1
1
-
+
M
R
+
L
L
X
X
5
5
2
2
X
/
C
o
t
n
r
o
l
L
i
n
s
e
(
9
)
9
9
-
+
9
9
-
+
D
M
G
D
D
S
D
I
F
F
S
E
N
S
E
*
*
D
I
F
F
B
P
i
n
n
t
o
p
r
e
s
e
t
n
o
n
L
X
5
2
/
5
4
2
1
C
4
P
W
2
P
a
c
a
k
g
e
.
M
u
s
t
c
o
n
c
n
t
D
I
e
F
F
S
N
E
S
s
i
g
n
l
o
a
t
D
I
F
S
F
N
E
S
E
p
i
n
o
n
P
W
p
c
a
k
a
g
e
.
FIGURE 2 — Linfinity ONLY Application Schematic
Copyright © 2001
Rev. 1.5a 02/13
6
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
LX5241/5242/5243
UltraMAX
M U L T I M O D E S C S I T E R M I N A T O R
P R O D U C T I O N D A T A S H E E T
APPLICATION SCHEMATIC
H
O
S
T
P
R
E
I
P
H
E
R
A
L
T
E
R
M
P
O
W
E
R
T
E
R
M
P
O
W
E
R
V
1
-
1
1
-
+
V
V
V
T
T
T
E
E
E
R
M
T
T
T
E
E
E
R
M
M
M
1
+
D
a
t
a
L
i
n
s
e
(
9
)
L
L
X
X
5
5
4
4
4
2
2
1
1
1
4
4
4
/
2
2
2
L
L
L
X
5
5
5
4
4
4
2
2
2
1
1
1
4
4
4
/
2
2
2
4
4
4
3
3
3
9
9
-
+
9
9
-
+
L
L
L
X
X
X
5
5
5
2
2
2
4
4
4
3
3
3
D
I
S
C
O
N
E
N
C
T
D
I
S
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R
FIGURE 3 — Suggested Linfinity LX5241/5242/5243 Universal Application Schematic
(Please Reference Manufacturer's Current Data Sheet To Ensure Compatibility)
UltraMAX is a trademark of LinFinity Microelectronics Inc.
Prodution Data - Information Contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be mod-
ified in any way without the express written consent of Microsemi. Product processing does not necessarily include testing of all parameters. Microsemi
reserves the right to change the configuration and performance of the product and to discontinue product at any time.
Copyright © 2001
Rev. 1.5a 02/13
7
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