UC5603PWPTR [ETC]
Terminator ; 终结者\n
| 型号： | UC5603PWPTR |
| 厂家： | 
ETC |
| 描述： | Terminator
|
| 文件： | 总6页 (文件大小：195K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U C5 60 3
TE R MI N ATO R
ą
9
Ć
L
I
N
E
S
C
S
I
A
C
T
I
V
E
SLUS195A – MARCH 1997 – REVISED OCTOBER 2000
D
Complies with SCSI, SCSI–2 and SPI–2
Standards
D
Logic Command Disconnects all
Termination Lines
D
6-pF Channel Capacitance during
Disconnect
D
D
D
D
Trimmed Termination Current to 3%
Trimmed Impedance to 3%
D
D
D
D
100-µA Supply Current in Disconnect Mode
Meets SCSI Hot Plugging
Negative Clamping on all Signal Lines
Current Limit and Thermal Shutdown
Protection
–400-mA Sourcing Current for Termination
+400-mA Sinking Current for Active
Negation Drivers
description
The UC5603 provides 9 lines of active termination for a SCSI (Small Computers Systems Interface) parallel bus.
The SCSI standard recommends active termination at both ends of the cable segment.
The UC5603 provides a disconnect feature which, when opened or driven high, will disconnect all terminating
resistors, and disables the regulator; greatly reducing standby power. The output channels remain high
impedance even without Termpwr applied. A low channel capacitance of 6 pF allows units at interim points of
the bus to have little to no effect on the signal integrity.
Functionally the UC5603 is similar to its predecessor, the UC5601 – 18 line Active Terminator. Several electrical
enhancements were incorporated in the UC5603, such as a sink/source regulator output stage to accommodate
all signal lines at 5 V, while the regulator remains at its nominal value, reduced channel capacitance to 6 pF
typical, and as with the UC5601, custom power packages are utilized to allow normal operation at full power
conditions (1.2 watts).
functional block diagram
UDG-94049
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2000, Texas Instruments Incorporated
P
P
R
O
d
D
U
t
C
s
T
I
O
c
N
o
D
A
T
A
t
i
n
s
f
p
o
e
r
m
a
i
t
c
i
a
o
t
n
i
s
s
c
u
r
r
t
e
h
n
e
t
a
s
m
o
f
o
p
T
u
e
b
x
l
i
a
c
s
a
t
i
o
n
d ate.
Ins tr u men ts
r
o
u
c
n
f
o
r
m
o
c
i
f
i
o
n
p
e
r
t
e
r
s
f
s
t
a
s
n
d
g
a
r
d
w
a
a
r
r
a
n
t
y
.
P
r
o
d
u
p a r a m e t e r s .
c
t
i
o
n
p
r
o
c
e
s
s
i
n
g
d
o
e
s
n
o
t
n
e
c
e
s
s
a
r
i
l
y
i
n
c
l
u
d
e
t
e
t
i
n
o
f
l
l
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
UC 5 60 3
9 Ć L I N E S C S I A C T I V E T E R M I N ATO R
ą
SLUS195A – MARCH 1997 – REVISED OCTOBER 2000
description (continued)
Internal circuit trimming is utilized, first to trim the impedance to a 3% tolerance, and then most importantly, to
trim the output current to a 3% tolerance, as close to the max SCSI spec as possible, which maximizes noise
margin in fast SCSI operation.
Other features include negative clamping on all signal lines to protect external circuitry from latch-up, thermal
shutdown and current limit.
This device is offered in low thermal resistance versions of the industry standard 16 pin narrow body SOIC, and
24 pin TSSOP.
connection diagrams
N PACKAGE
(TOP VIEW)
PWP PACKAGE
(TOP VIEW)
LINE7
LINE8
LINE6
LINE5
REG
N/C
1
2
3
4
5
6
7
8
16
15
14
13
12
1
24
23
22
21
20
19
18
17
16
15
14
13
LINE7
LINE8
LINE9
N/C
SGND
GND*
GND*
GND*
GND*
LINE6
LINE5
REG
2
3
LINE9
4
N/C
N/C
5
GND*
GND*
GND*
GND*
N/C
TRMPR
LINE4
LINE3
SGND
DISCNCT
LINE1
N/C
6
11 TRMPWR
10 LINE4
7
8
LINE2
9
LINE3
9
10
11
12
DISCNCT
LINE1
LINE2
DP PACKAGE
(TOP VIEW)
LINE7
LINE8
LINE9
GND*
LINE6
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LINE5
REG
* PWP package pin 5 serves as signal ground; pins 6,
7, 8, 9, 17, 18, 19, and 20 serve as heatsink/ground.
GND*
SGND*
GND*
DISCNCT
TRMPWR
LINE4
LINE3
* DP package pin 5 serves as signal ground; pins 4,
12, 13 serve as heatsink/ground.
LINE1
LINE2
ORDERING INFORMATION
Packaged Devices
SOIC-16 (DP)
T
A
= T
J
TSSOP-24
(PWP)
DIL -16(N)
0°C to 70°C
UC5603N
UCUC5603DP
UCUC5603PWP
†
DP (SOIC–16) and PWP (TSSOP–24) packages are available taped and reeled. Add TR
suffix to device type (e.g. UC5603PWPTR) to order quantities of 2000 devices per reel.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
U C5 60 3
9 Ć L I N E S C S I A C T I V E T E R M I N ATO R
ą
SLUS195A – MARCH 1997 – REVISED OCTOBER 2000
†
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Termpwr voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Signal line voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to 7 V
Regulator output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 A
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
Operating temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 150°C
Lead temperature (soldering, 10 sec.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
†
‡
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Unless otherwise specified all voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. Consult
Packaging Section of Unitrode Integrated Circuits databook for thermal limitations and considerations of packages.
recommended operating conditions
Termpwr voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8 V to 5.25 V
Signal line voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 5 V
Disconnect input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to Termpwr
electrical characteristics, these specifications apply for T = 0°C to 70°C. TRMPWR = 4.75 V
A
DISCNCT = 0 V, T = T , (unless otherwise stated)
A
J
supply current section
PARAMETER
TEST CONDITIONS
All termination lines = Open
MIN
TYP
12
MAX
18
UNITS
mA
Termpwr supply current
Power down mode
All termination lines = 0.5 V
DISCNCT = Open
200
100
220
150
mA
µA
output section (terminator lines)
PARAMETER
TEST CONDITIONS
= –5 mA to –15 mA
MIN
107
2.7
TYP
110
2.9
MAX
UNITS
Ω
Terminator impedance
Output high voltage
∆I
113
LINE
V
V
V
= 4 V,
See Note 1
V
TRMPWR
T
= 25°C
–21.1 –21.9 –22.4
–20.5 –21.9 –22.4
–20.3 –21.9 –22.4
–19.8 –21.9 –22.4
–22.0 –24.0 –25.4
mA
mA
mA
mA
mA
V
J
Max output current
= 0.5 V
LINE
0°C < T < 70°C
J
T
J
= 25°C
= 0.5 V,
TRMPWR = 4 V,
LINE
See Note 1
0°C < T < 70°C
Max output current
Output clamp level
J
V
= 0.2 V,
LINE
= –30 mA
TRMPWR = 4.0 V to 5.25 V
0°C < T < 70°C
J
I
–0.2 –0.05
10
0.1
400
100
LINE
V
V
= 0 to 4 V
= 5.25 V
nA
LINE
TRMPWR = 0 V to 5.25,
VREG = 0 V
µA
LINE
Output leakage
DISCNCT = 4 V
TRMPWR = 0 V to 5.25 V,
REG = Open
10
6
400
8
nA
pF
V
LINE
= 0 V to 5.25 V
Output capacitance
DISCNCT = Open
See Note 2
DP Package
NOTES: 1. Measuring each termination line while other 8 are low (0.5 V).
2. Ensured by design. Not production tested.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
UC 5 60 3
9 Ć L I N E S C S I A C T I V E T E R M I N ATO R
ą
SLUS195A – MARCH 1997 – REVISED OCTOBER 2000
regulator section
PARAMETER
Regulator output voltage
Regulator output voltage
Line regulation
TEST CONDITIONS
MIN
2.8
2.8
TYP
2.9
MAX
UNITS
3
V
V
All termination lines = 5 V
TRMPWR = 4 V to 6 V
2.9
10
3
20
50
1
mV
mV
V
Load regulation
I
= 100 mA to –100 mA
REG
All termination lines = 0.5 V
20
Drop out voltage
0.7
Short circuit current
Sinking current capability
Thermal shutdown
V
V
= 0 V
–200 –400 –600
mA
mA
°C
°C
REG
= 3.5 V
200
400
170
10
600
REG
Thermal shutdown hysteresis
disconnect section
PARAMETER
Disconnect threshold
Threshold hysteresis
Input current
TEST CONDITIONS
MIN
1.3
TYP
1.5
160
10
MAX
1.7
UNITS
V
100
250
15
mV
DISCNCT = 0 V
mA
APPLICATION INFORMATION
UDG-94050
Figure 1. Typical Wide SCSI Bus Configurations Utilizing 1 UC5601 and 1 UC5603 Device
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
U C5 60 3
9 Ć L I N E S C S I A C T I V E T E R M I N ATO R
ą
SLUS195A – MARCH 1997 – REVISED OCTOBER 2000
APPLICATION INFORMATION
UDG-94051
Figure 2. Typical Wide SCSI Bus Configurations Utilizing 3 UC5603 Devices
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
相关型号：
©2020 ICPDF网 联系我们和版权申明