LT1330CSW#TRPBF [Linear]
LT1330 - 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown; Package: SO; Pins: 28; Temperature Range: 0°C to 70°C;
| 型号： | LT1330CSW#TRPBF |
| 厂家： | 
Linear |
| 描述： | LT1330 - 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown; Package: SO; Pins: 28; Temperature Range: 0°C to 70°C 驱动 光电二极管 接口集成电路 驱动器 |
| 文件： | 总10页 (文件大小：160K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1330
5V RS232 Transceiver with
3V Logic Interface and One
Receiver Active in Shutdown
DESCRIPTION
FEATURES
The LT®1330 is a three driver, five receiver RS232 trans-
ceiver with low supply current. Designed to interface
with new 3V logic, the LT1330 operates with both a 5V
power supply and a 3V logic power supply. The chip may
be shut down to micropower operation with one receiver
remaining active to monitor RS232 inputs such as ring
detect from a modem.
n
3V Logic Interface
n
ESD Protection over ±±10V
n
Uses Small Capacitors: 0.1μF, 0.2μF, 1.0μF
n
One Low Power Receiver Remains Active While in
Shutdown
n
Pin Compatible with LT1137A and LT1237
n
120ꢀBaud Operation for R = 3ꢀ, C = 2500pF
L
L
L
L
n
n
n
n
n
250ꢀBaud Operation for R = 3ꢀ, C = 1000pF
The LT1330 is fully compliant with all EIA RS232 spec-
ifications.Additionally,theRS232lineinputandoutputpins
areresilienttomultiple 10ꢀVESDstriꢀes. Thiseliminates
the need for costly TransZorbs® on line pins for the RS232
part.
CMOS Comparable Low Power: 30mW
Easy PC Layout—Flowthrough Architecture
Rugged Bipolar Design
Outputs Assume a High Impedance State When Off
or Powered Down
Absolutely No Latchup
n
n
n
The LT1330 operates to 120ꢀbaud even driving high
capacitive loads. During shutdown, driver and receiver
outputs are at a high impedance state allowing devices to
be paralleled.
60μA Supply Current in Shutdown
Available in SO and SSOP Pacꢀages
L, LT, LTC and LTM are registered trademarꢀs of Linear Technology Corporation.
TransZorb is a registered trademarꢀ of General Instrments, GSI.
APPLICATIONS
n
Notebooꢀ Computers
n
Palmtop Computers
TYPICAL APPLICATION
Output Waveforms
–
+
V
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
LT1330
RECEIVER
1.0μF
5V V
0.1μF
OUTPUT
CC
2 s 0.1μF
3
V = 3V
L
C
= 50pF
L
2 s 0.1μF
4
DRIVER 1 IN
RX1 OUT
5
DRIVER
OUTPUT
= 3ꢀ
DRIVER 1 OUT
RX1 IN
6
DRIVER 2 IN
RX2 OUT
R
L
7
C
L
= 2500pF
DRIVER 2 OUT
RX2 IN
TO LOGIC
8
RX3 OUT
TO
LINE
9
RX3 IN
RX4 OUT
10
11
12
13
14
RX4 IN
DRIVER 3 IN
RX5 OUT (LOW-Q)
INPUT
DRIVER 3 OUT
RING DETECT IN
GND
DRIVER
DISABLE
RX5 IN (LOW-Q)
ON/OFF
1330 TA02
μCONTROLLER OR
μPROCESSOR
SHUTDOWN
CONTROL OUT
3V V
L
1330 TA01
1330fb
1
LT1330
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
(Note ±)
TOP VIEW
Supply Voltage (V ) ..................................................6V
CC
+
–
V
1
2
3
4
5
6
7
8
9
28
V
Supply Voltage (V ) ....................................................6V
L
–
+
5V V
27 C2
26 C2
CC
+
+
–
V ..........................................................................13.2V
V ........................................................................–13.2V
C1
–
C1
25 DR1 IN
24 RX1 OUT
23 DR2 IN
22 RX2 OUT
21 RX3 OUT
20 RX4 OUT
19 DR3 IN
Input Voltage
DR1 OUT
RX1 IN
–
+
Driver............................................................ V to V
DR2 OUT
RX2 IN
Receiver .................................................–30V to 30V
Output Voltage
RX3 IN
Driver......................................................– 30V to 30V
RX4 IN 10
RX5 OUT
(LOW-Q)
GND
DRIVER
DISABLE
NC
Receiver .......................................– 0.3V to V + 0.3V
L
DR3 OUT 11
RX5 IN
(LOW-Q)
18
Short-Circuit Duration
12
17
16
15
+
13
14
ON/OFF
V .....................................................................30 sec
V .....................................................................30 sec
–
3V V
L
Driver Output .............................................. Indefinite
Receiver Output .......................................... Indefinite
Operating Temperature Range
G PACKAGE
NW PACKAGE
28-LEAD PLASTIC SSOP
28-LEAD (WIDE) PDIP
SW PACKAGE
28-LEAD (WIDE) PLASTIC SO
LT1330C................................................... 0°C to 70°C
Storage Temperature Range...................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
T
T
T
= 150°C, θ = 96°C/W (G)
JA
JMAX
JMAX
JMAX
= 150°C, θ = 56°C/W (NW)
JA
= 150°C, θ = 85°C/W (SW)
JA
Consult factory for Military grade parts.
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
LT1330CG
PACKAGE DESCRIPTION
28-Lead Plastic SSOP
28-Lead (Wide) PDIP
TEMPERATURE RANGE
0°C to 70°C
LT1330CG#PBF
LT1330CG#TRPBF
LT1330CNW#TRPBF
LT1330CSW#PBF
LT1330CNW#PBF
LT1330CSW#PBF
LT1330CNW
LT1330CSW
0°C to 70°C
28-Lead (Wide) Plastic SO
0°C to 70°C
Consult LTC Marꢀeting for parts specified with wider operating temperature ranges.
Consult LTC Marꢀeting for information on non-standard lead based finish parts.
For more information on lead free part marꢀing, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range (1°C ≤ TA ≤ 71°C for commercial grade). (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply Generator
+
V Output
7.9
–7
V
V
–
V
Output
Supply Current (V
)
CC
T = 25°C (Note 3)
A
6
6
12
14
mA
mA
l
Supply Current (V )
(Note 4)
0.1
1
mA
L
1330fb
2
LT1330
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range (1°C ≤ TA ≤ 71°C for commercial grade). (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
l
Supply Current When OFF (V
)
CC
Shutdown (Note 5)
Driver Disable
0.06
3.00
0.15
mA
mA
Supply Rise Time
Shutdown to Turn-On
C1 = C2 = 0.2μF,
0.2
ms
+
–
C = 1.0μF, C = 0.1μF
l
l
ON/OFF Pin Thresholds
Input Low Level (Device Shutdown)
Input High Level (Device Enabled)
0.8
1.4
1.4
V
V
2.4
80
l
ON/OFF Pin Current
0V ≤ V
≤ 5V
–15
0.8
μA
ON/OFF
l
l
DRIVER DISABLE Pin Thresholds
Input Low Level (Drivers Enabled)
Input High Level (Drivers Disabled)
1.4
1.4
V
V
2.4
l
DRIVER DISABLE Pin Current
Oscillator Frequency
Any Driver
0V ≤ V
≤ 5V
–10
500
μA
DRIVER DISABLE
Driver Outputs Loaded R = 3ꢀ
130
ꢀHz
L
l
l
Output Voltage Swing
Load = 3ꢀ to GND
Positive
Negative
5
7.5
–6.3
V
V
–5
l
l
Logic Input Voltage Level
Input Low Level (V
= High)
= Low)
1.4
1.4
0.8
V
V
OUT
OUT
Input High Level (V
2
9
l
Logic Input Current
0.8V ≤ V ≤ 2V
5
20
μA
mA
μA
IN
Output Short-Circuit Current
Output Leaꢀage Current
Data Rate (Note 8)
V
OUT
= 0V
17
10
l
Shutdown V
=
30V (Note 5)
100
OUT
R = 3ꢀ, C = 2500pF
120
250
ꢀBAUD
ꢀBAUD
L
L
R = 3ꢀ, C = 1000pF
L
L
Slew Rate
R = 3ꢀ, C = 51pF
15
15
30
V/μs
V/μs
L
L
R = 3ꢀ, C = 2500pF
4
L
L
Propagation Delay
Output Transition t High to Low (Note 6)
0.6
0.5
1.3
1.3
μs
μs
HL
Output Transition t Low to High
LH
Any Receiver
Input Voltage Thresholds
Input Low Threshold (V
= High)
= Low)
0.8
1.3
1.7
V
V
OUT
OUT
Input High Threshold (V
2.4
1
l
l
Hysteresis
0.1
3
0.4
5
V
ꢀΩ
μA
Input Resistance
Output Leaꢀage Current
Receivers ±, 2, 3, 4
Output Voltage
V
IN
=
10V
7
Shutdown (Note 5) 0 ≤ V
≤ V
1
10
OUT
CC
l
l
Output Low, I
= –1.6mA
= 160μA (V = 3V)
0.2
2.9
0.4
V
V
OUT
OUT
Output High, I
2.7
L
Output Short-Circuit Current
Propagation Delay
Sinꢀing Current, V
= V
OUT
–10
10
–20
20
mA
mA
OUT
CC
Sourcing Current, V
= 0V
Output Transition t High to Low (Note 7)
Output Transition t Low to High
250
350
600
600
ns
ns
HL
LH
Receiver 5 (LOW Q-Current RX)
l
l
Output Voltage
Output Low, I
Output High, I
= – 500μA
= 160μA (V = 3V)
0.2
2.9
0.4
V
V
OUT
2.7
OUT
L
Output Short-Circuit Current
Propagation Delay
Sinꢀing Current, V
= V
OUT
–2
2
–4
4
mA
mA
OUT
CC
Sourcing Current, V
= 0V
Output Transition t High to Low (Note 7)
Output Transition t Low to High
1
1
3
3
μs
μs
HL
LH
1330fb
3
LT1330
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range (1°C ≤ TA ≤ 71°C for commercial grade).
Note ±: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Supply current measurements using driver disable are performed with
≥ 3V.
V
DRIVER DISABLE
Note 6: For driver delay measurements, R = 3ꢀ and C = 51pF. Trigger
L
L
points are set between the driver’s input logic threshold and the output
transition to the zero crossing (t = 1.4V to 0V and t = 1.4V to 0V).
Note 2: Testing done at V = 5V and V
= 3V.
CC
ON/OFF
HL
LH
Note 3: Supply current is measured as the average over several charge
pump burst cycles. C = 1.0μF, C = 0.1μF, C1 = C2 = 0.2μF. All outputs are
open, with all driver inputs tied high.
Note 7: For receiver delay measurements, C = 51pF. Trigger points are
set between the receiver’s input logic threshold and the output transition to
L
+
–
standard TTL/CMOS logic threshold (t = 1.3V to 2.4V and t = 1.7V to 0.8V).
HL
LH
Note 4: V supply current is measured with all receiver outputs low.
Note 8: Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
L
Note 5: Measurements in shutdown are performed with V
≤ 0.1V.
ON/OFF
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Voltage
Receiver Input Thresholds
Supply Current vs Data Rate
10
8
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
80
70
60
3 DRIVERS ACTIVE
V
= 5V
R
L
= 3ꢀ
OUTPUT HIGH
CC
R
= 3ꢀ
= 2500pF
L
L
C
V
CC
= 4.5V
6
4
50
40
2
INPUT HIGH
INPUT LOW
0
–2
–4
–6
–8
–10
30
20
10
0
OUTPUT LOW
V
CC
= 4.5V
V
= 5V
CC
–55
0
25
50
75 100 125
–55
0
25
50
75 100 125
0
25
50
75
125 150
–25
–25
100
DATA RATE (ꢀBAUD)
TEMPERATURE (°C)
TEMPERATURE (°C)
1330 G01
1330 G02
1330 G03
VCC Supply Current in
Driver Disable
VCC Supply Current in Shutdown
DRIVER DISABLE Threshold
5
4
3
2
1
0
150
125
100
75
3.0
2.5
2.0
1.5
50
25
0
1.0
0.5
0
–55
–25
0
25
50
75 100 125
50
TEMPERATURE (°C)
100 125
–55 –25
0
25
75
50
TEMPERATURE (°C)
100 125
–55 –25
0
25
75
TEMPERATURE (°C)
1330 G05
1330 G04
1330 G06
1330fb
4
LT1330
TYPICAL PERFORMANCE CHARACTERISTICS
ON/OFF Thresholds
VCC Supply Current
Driver Lea0age in Shutdown
3.0
2.5
2.0
1.5
100
10
1
40
35
30
3 DRIVERS LOADED
R
L
= 3ꢀ
25
20
ON THRESHOLD
1 DRIVER LOADED
R
L
= 3ꢀ
V
= 30V
OUT
15
10
5
1.0
0.5
0
V
= –30V
OUT
OFF THRESHOLD
NO LOAD
0
0.1
50
TEMPERATURE (°C)
100 125
–55 –25
0
25
75
–55
0
25
50
75
125
50
125
–25
100
–55
–25
0
25
75 100
TEMPERATURE (°C)
TEMPERATURE (°C)
1330 G07
1330 G08
1330 G09
Driver Short-Circuit Current
Receiver Short-Circuit Current
40
35
30
25
20
15
10
5
30
25
20
15
RX1 TO RX4
+
I
SC
+
I
SC
RX1 TO RX4
–
I
SC
–
I
SC
+
–
RX5 I
SC
10
5
RX5 I
SC
0
0
–55
–25
0
25
50
75 100 125
50
TEMPERATURE (°C)
100 125
–55 –25
0
25
75
TEMPERATURE (°C)
1330 G11
1330 G10
Receiver Output Waveforms
Driver Output Waveforms
RX5 OUTPUT
= 50pF
DRIVER OUTPUT
= 3ꢀ
C
L
R
L
C
= 2500pF
L
RX1 TO RX4
OUTPUT
DRIVER OUTPUT
= 3ꢀ
C
= 50pF
L
R
L
INPUT
INPUT
1300 G12
1300 G13
V
= 3V
L
1330fb
5
LT1330
PIN FUNCTIONS
V : 5V Input Supply Pin. This pin should be decoupled
DRIVER IN: RS232 Driver Input Pins. These inputs are
CC
with a 0.1μF ceramic capacitor close to the pacꢀage pin.
Insufficientsupplybypassingcanresultinlowoutputdrive
levels and erratic charge pump operation.
TTL/CMOScompatible.Unusedinputsshouldbeconnected
to V .
CC
DRIVER OUT: Driver Outputs at RS232 Voltage Levels.
Driver output swing meets RS232 levels for loads up to
3ꢀ.Slewratesarecontrolledforlightlyloadedlines.Output
current capability is sufficient for load conditions up to
2500pF. Outputs are in a high impedance state when in
V : 3V Logic Supply Pin for all RS232 Receivers. Liꢀe V ,
L
CC
the V input should be decoupled with a 0.1μF ceramic
L
capacitor. This pin may also be connected to 5V.
GND: Ground Pin.
shutdown mode, V = 0V, or when the DRIVER DISABLE
CC
ON/OFF: TTL/CMOS Compatible Operating Mode Control.
A logic low puts the device in the low power shutdown
mode. All three drivers and four receivers (RX1, RX2,
RX3, and RX4) assume a high impedance output state
in shutdown. Only receiver RX5 remains active while the
transceiver is in shutdown. The transceiver consumes
only 60μA of supply current while in shutdown. A logic
high fully enables the transceiver.
pin is active. Outputs are fully short-circuit protected from
–
+
V + 30V to V – 30V. Applying higher voltages will not
damage the device if the overdrive is moderately current
limited. Short circuits on one output can load the power
supply generator and may disrupt the signal levels of the
other outputs. The driver outputs are protected against
ESD to 10ꢀV for human body model discharges.
RX IN: Receiver Inputs. These pins accept RS232 level
signals ( 30V) into a protected 5ꢀ terminating resistor.
The receiver inputs are protected against ESD to 10ꢀV
forhumanbodymodeldischarges. Eachreceiverprovides
0.4Vofhysteresisfornoiseimmunity.Openreceiverinputs
assume a logic low state.
DRIVER DISABLE: This pin provides an alternate control
for the charge pump and RS232 drivers. A logic high
on this pin shuts down the charge pump and places all
driver outputs in a high impedance state. All five receivers
remain active under these conditions. Floating the driver
disable pin or driving it to a logic low level fully enables the
transceiver. A logic low on the ON/OFF pin supersedes the
state of the DRIVER DISABLE pin. Supply current drops
to 3mA when in driver disable mode.
RXOUT:ReceiverOutputswithTTL/CMOSVoltageLevels.
Outputs are in a high impedance state when in shutdown
modetoallowdatalinesharing.Outputs,includingLOW-Q
RX OUT, are fully short-circuit protected to ground or V
with the power on, off, or in shutdown mode.
CC
+
+
V : Positive Supply Output. V ≈ 2V – 1.5V. This pin
CC
requires an external charge storage capacitor, C ≥ 1.0μF,
LOW Q-CURRENT RX IN: Low Power Receiver Input.
This special receiver remains active when the part is in
shutdown mode, consuming typically 60μA. This receiver
hasthesame5ꢀinputimpedanceand 10ꢀVESDprotection
characteristics as the other receivers.
tied to ground or 5V. Larger value capacitors may be used
+
to reduce supply ripple. The ratio of the capacitors on V
–
and V should be greater than 5 to 1.
–
–
V : Negative Supply Output. V ≈ –(2V – 2.5V). This pin
CC
requires an external charge storage capacitor, C ≥ 0.1μF.
LOW Q-CURRENT RX OUT: Low Power Receiver Output.
This pin produces the same TTL/CMOS output voltage
levels as receivers RX1, RX2, RX3, and RX4 with slightly
decreased speed and short-circuit current. Data rates to
120ꢀbaud are supported by this receiver.
See the Applications Information section for guidance in
+
–
choosing filter capacitors for V and V .
+
–
+
–
C± , C± , C2 , C2 : Commutating Capacitor Inputs
+
require two external capacitors, C ≥ 0.2μF: one from C1
–
+
–
to C1 , and another from C2 to C2 . The capacitor’s
effective series resistance should be less than 2Ω. For
C ≥ 1μF, low ESR tantalum capacitors worꢀ well, although
ceramic capacitors may be used with a minimal reduction
in charge pump compliance.
1330fb
6
LT1330
ESD PROTECTION
ESD Test Circuit
TheRS232lineinputsoftheLT1330haveon-chipprotection
fromESDtransientsupto 10ꢀV.Theprotectionstructures
act to divert the static discharge safely to system ground.
In order for the ESD protection to function effectively,
the power supply and ground pins of the LT1330 must
be connected to ground through low impedances. The
power supply decoupling capacitors and charge pump
storage capacitors provide this low impedance in normal
application of the circuit. The only constraint is that low
–
+
V
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
LT1330
5V V
2
3
CC
0.1μF
0.2μF
1μF
0.1μF
0.2μF
4
DRIVER 1 IN
RX1 OUT
5
DRIVER 1 OUT
RX1 IN
6
DRIVER 2 IN
RX2 OUT
7
DRIVER 2 OUT
RX2 IN
8
RS232
RX3 OUT
LINE PINS
PROTECTED
TO 10ꢀV
9
RX3 IN
RX4 OUT
ESR capacitors must be used for bypassing and charge
10
11
12
13
14
RX4 IN
DRIVER 3 IN
RX5 OUT (LOW-Q)
GND
+
storage. ESD testing must be done with pins V , V , V ,
CC
L
DRIVER 3 OUT
RX5 IN (LOW-Q)
ON/OFF
–
V , and GND shorted to ground or connected with low
ESR capacitors.
DRIVER DISABLE
3V V
L
1330 TC01
0.1μF
APPLICATIONS INFORMATION
–
Storage Capacitor Selection
Do not attempt to reduce V ripple when the charge pump
isindiscontinuousBurstModeoperation.Therippleinthis
mode is determined by internal comparator thresholds.
Larger storage capacitor values increase the burst period,
and do not reduce ripple amplitude.
+
–
The V and V storage capacitors must be chosen care-
fully to insure low ripple and stable operation. The LT1330
charge pump operates in a power efficient Burst Mode®
operation. When storage capacitor voltage drops below
+
a preset threshold, the oscillator is gated on until V and
Power Saving Operational Modes
–
V are boosted up to levels exceeding a second threshold.
TheLT1330hasbothshutdownanddriverdisableoperating
modes. These operating modes can optimize power
consumption based upon applications needs.
The oscillator then turns off, and current is supplied from
+
–
the V and V storage capacitors.
–
The V potential is monitored to control charge pump
+
The On/Off shutdown control turns off all circuitry except
forLow-QRX5.WhenRX5detectsasignal,thisinformation
can be used to waꢀe up the system for full operation.
operation.ItisthereforeimportanttoinsurelowerV ripple
–
than V ripple, or erratic operation of the charge pump will
result. Proper operation is insured in most applications
+
by choosing the V filter capacitor to be at least 5 times
If more than one line must be monitored, the driver
disable mode provides a power efficient operating option.
The driver disable mode turns off the charge pump and
RS232 drivers, but ꢀeeps all five receivers active. Power
–
+
the V filter capacitor value. If V is more heavily loaded
–
than V , a larger ratio may be needed.
–
The V filter capacitor should be selected to obtain low
consumption in driver disable mode is 3mA from V .
ripple when the drivers are loaded, forcing the charge
pump into continuous mode. A minimum value 0.1μF is
suggested.
CC
Burst Mode is a registered trademarꢀ of Linear Technology Corporation.
1330fb
7
LT1330
PACKAGE DESCRIPTION
NW Pac0age
28-Lead PDIP (Wide 1.611)
(LTC DWG # 05-08-1520)
0.070
(1.778)
TYP
1.455*
(36.957)
MAX
0.045 – 0.065
(1.143 – 1.651)
0.150 0.005
(3.810 0.127)
0.600 – 0.625
(15.240 – 15.875)
28 27 26 25 24 23 22 21 20 19 18 17 16 15
0.015
(0.381)
MIN
0.009 – 0.015
(0.229 – 0.381)
0.505 – 0.560*
(12.827 – 14.224)
+0.035
–0.015
0.625
0.125
(3.175)
MIN
0.035 – 0.080
(0.889 – 2.032)
0.018 0.003
(0.457 0.076)
+0.889
15.87
1
2
3
5
7
9
4
6
8
10 11 12 13 14
(
)
–0.381
0.100 0.010
(2.540 0.254)
N28 1197
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
SW Pac0age
28-Lead Plastic Small Outline (Wide 1.311)
(LTC DWG # 05-08-1620)
0.697 – 0.712*
(17.70 – 18.08)
0.291 – 0.299**
(7.391 – 7.595)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
28 27 26 25 24 23 22 21 20 19 18
16 15
17
s 45°
0° – 8° TYP
0.394 – 0.419
(10.007 – 10.643)
0.050
(1.270)
NOTE 1
0.009 – 0.013
TYP 0.014 – 0.019
(0.356 – 0.482)
TYP
0.004 – 0.012
(0.102 – 0.305)
(0.229 – 0.330)
NOTE 1
0.016 – 0.050
(0.406 – 1.270)
NOTE:
2
3
5
7
8
9 10 11 12 13 14
S28 (WIDE) 0996
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
1
4
6
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
1330fb
8
LT1330
PACKAGE DESCRIPTION
G Pac0age
28-Lead Plastic SSOP (1.219)
(LTC DWG # 05-08-1640)
0.397 – 0.407*
(10.07 – 10.33)
0.205 – 0.212**
(5.20 – 5.38)
0.068 – 0.078
(1.73 – 1.99)
2827262524232221201918 1615
17
0° – 8°
0.301 – 0.311
(7.65 – 7.90)
0.0256
(0.65)
BSC
0.022 – 0.037
(0.55 – 0.95)
0.005 – 0.009
(0.13 – 0.22)
0.010 – 0.015
(0.25 – 0.38)
0.002 – 0.008
(0.05 – 0.21)
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
G28 SSOP 0694
5
7
8
1
2
3
4
6
9 101112 13 14
**DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
1330fb
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However,noresponsibilityisassumedforitsuse.LinearTechnologyCorporationmaꢀesnorepresentation
that the interconnection of its circuits as described herein will not infringe on existing patent rights.
9
LT1330
TYPICAL APPLICATION
Typical Mouse Driving Application
–
+
V
1
2
28
27
26
V
LT1330
1.0μF
2 s 0.1μF
0.1μF
5V V
CC
2 s 0.1μF
MOUSE
3
4
25 DRIVER 1 IN
24 RX1 OUT
23 DRIVER 2 IN
22 RX2 OUT
21 RX3 OUT
20 RX4 OUT
19 DRIVER 3 IN
18 RX5 OUT (LOW-Q)
17 GND
LOGIC “0”
LOGIC “0”
+
V
5
DRIVER 1 OUT
RX1 IN
LOGIC
6
DCD
DSR
RX
(1)
7
DRIVER 2 OUT
RX2 IN
8
MOUSE DATA
LOGIC “1”
9
RTS
TX
RX3 IN
OPTICS
10
11
12
13
14
RX4 IN
–
CTS
DTR
RI
DRIVER 3 OUT
V
RX5 IN (LOW-Q)
ON/OFF
16 DRIVER DISABLE
15
(9)
(5)
3V V
L
DB9
1330 TA03
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1137A
5V RS232 Transceiver
RS232 Transceiver
IEC-1000-4-2 ESD Compliant
1 Receiver Active in Shutdown
IEC-1000-4-2 ESD Compliant
LT1237
LT1780/LT1781
2 Driver/2 Receiver RS232 Transceivers
1330fb
LT 0209 REV B • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
10
●
●
© LINEAR TECHNOLOGY CORPORATION 1992
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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