LT1332CG#PBF [Linear]
IC LINE TRANSCEIVER, PDSO28, 0.209 INCH, PLASTIC, SSOP-28, Line Driver or Receiver;
| 型号： | LT1332CG#PBF |
| 厂家： | 
Linear |
| 描述： | IC LINE TRANSCEIVER, PDSO28, 0.209 INCH, PLASTIC, SSOP-28, Line Driver or Receiver 驱动 光电二极管 接口集成电路 驱动器 |
| 文件： | 总8页 (文件大小：601K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1332
Wide Supply Range
Low Power RS232 Transceiver with
12V VPP Output for Flash Memory
DESCRIPTION
OBSOLETE:
Contact Linear Technology for Potential Replacement
FOR INFORMATION PURPOSES ONLY
FEATURES
n
Generates Full RS232 Signal Levels from 3V Supply
The LT1332 is a 3-driver/5-receiver RS232 transceiver,
designed to be used in conjunction with a switching
regulator. The LT1332 shares the regulator’s positive
output, while charge is capacitively pumped from the
regulator’s switch pin to the negative supply. Schottky
rectifiers built into the LT1332 simplify the charge
pump design.
n
n
n
n
n
n
n
12V VPP Output Available for Flash Memory
Useful with a Wide Variety of Switching Regulators
Low Supply Current: I(V ) = 1mA
CC
Wide Supply Range: 2V ≤ V ≤ 6V
CC
ESD Protection Over ±±10k
Operates to 120k Baud
Outputs Assume a High Impedance State When Off
or Powered Down
TheLT1332/LT1109Acombinationshownbelowgenerates
fully compliant RS232 signal levels from as little as 2V of
inputsupply. Theswitchercandelivergreaterthan100mA
of output current, making the LT1332 an excellent choice
for mouse driver circuits.
n
One µPower Receiver Remains Active While in
SHUTDOWN
n
n
n
n
Flowthrough Architecture Eases PC Board Layout
40µA Supply Current in SHUTDOWN
Absolutely No Latch-Up
Advanced driver output stages operate up to 120k baud
while driving heavy capacitive loads. New ESD structures
onchipmaketheLT1332resilienttomultiple 10kVstrikes,
eliminating costly transient suppressors.
Available in SO and SSOP Packages
APPLICATIONS
A shutdown pin disables the transceiver except for one
receiver which remains active for detecting incoming
RS232 signals. When shut down, the disabled drivers and
receivers assume high impedance output states.
n
Notebook and Palmtop Computers
Mouse Driver Circuits
n
TYPICAL APPLICATION
LT1332 Powered from an LT1109A Micropower Switching Regulator
Configured for Flash Memory
Output Waveforms
STANDARD FLASH MEMORY VPP GENERATOR
+
12V VPP
1µF
DRIVER
L1**
33µH
OUTPUT
MBRS130T3
SWITCHER
2 AA
BATTERIES
UP TO 6V
–
+
INPUT
1
2
24
23
22
21
20
19
18
17
16
15
14
13
V
V
V
IN
–
10µF
C
+
22µF*
22µF*
DRIVER
OUTPUT
V
SW
LT1109A-12
IN
3
R
= 3k
L
4
SW
ON/OFF
C
= 2500pF
L
SENSE
ON/OFF
5
6
LOGIC
SIDE
RS232
SIDE
GND
PGND
7
RECEIVER
OUTPUT
= 50pF
8
* AVX TAJE226K035
** SUMIDA CD54-330N (708-956-0666)
C
L
9
LT1332 • TA02
10
11
12
RS232
ON/OFF
NC
LT1332
3V
RS232
V
CC
0.1µF
LT1332 • TA01
1
LT1332
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Short Circuit Duration
Supply Voltage (V ) ..................................................6V
CC
+
+
V ....................................................................30 sec
V .........................................................................13.2V
–
–
–
V ....................................................................30 sec
V ...................................................................... – 13.2V
Driver Output .............................................. Indefinite
Receiver Output .......................................... Indefinite
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
C ...........................................................................–15V
Input Voltage
+
–
Driver ........................................................... V to V
Receiver ................................................. 30V to –30V
Output Voltage
Driver ..................................................... 30V to –30V
Receiver ......................................–0.3V to V + 0.3V
CC
PACKAGE/ORDER INFORMATION
TOP VIEW
TOP VIEW
TOP VIEW
+
–
–
V
C
1
2
V
24
23
22
21
20
19
18
17
16
15
14
13
NC
NC
1
2
3
4
5
6
7
8
9
28 NC
NC
1
2
3
4
5
6
7
8
9
28 NC
–
+
GND
27 NC
–
V
27
V
+
–
DRIVER OUT
RX IN
3
DRIVER IN
RX OUT
V
26
V
C
26 GND
–
4
C
25 GND
DRIVER OUT
RX IN
25 DRIVER IN
24 RX OUT
23 DRIVER IN
22 RX OUT
21 RX OUT
20 RX OUT
19 DRIVER IN
18 RXA OUT
17 RS232 ON/OFF
16 GND
S
DRIVER OUT
RX IN
5
DRIVER IN
RX OUT
DRIVER OUT
RX IN
24 DRIVER IN
23 RX OUT
22 DRIVER IN
21 RX OUT
20 RX OUT
19 RX OUT
18 DRIVER IN
17 RXA OUT
16 RS232 ON/OFF
15 GND
6
DRIVER OUT
RX IN
RX IN
7
RX OUT
DRIVER OUT
RX IN
RX IN
8
RX OUT
RX IN
DRIVER OUT
RXA IN
9
DRIVER IN
RXA OUT
RS232 ON/OFF
GND
RX IN
RX IN
10
11
12
RX IN 10
DRIVER OUT 11
RXA IN 12
DRIVER OUT 10
RXA IN 11
NC 12
NC
3V V
CC
NC 13
3V V
13
NC 14
CC
S PACKAGE
24-LEAD PLASTIC SOL
3V V
CC
14
15 NC
T
JMAX
= 150°C, θ = 80°C/W
JA
G PACKAGE
28-LEAD SSOP
N PACKAGE
28-LEAD PLASTIC DIP
OBSOLETE PACKAGE
T
= 150°C, θ = 96°C/W
T
= 150°C, θ = 56°C/W
JMAX JA
JMAX
JA
OBSOLETE PACKAGE
OBSOLETE PACKAGE
ORDER PART NUMBER
LT1332CN
ORDER PART NUMBER
ORDER PART NUMBER
LT1332CS
LT1332CG
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
Power Supply
CONDITIONS
MIN
TYP
MAX
UNITS
+
Supply Current I(V )
(Note 3)
(Note 3)
(Note 3)
(Note 4)
0.3
–0.6
1.0
0.8
–1.0
1.5
mA
mA
mA
–
Supply Current I(V )
Supply Current I(V
)
CC
l
Supply Current When OFF I(V
)
0.04
0.04
0.10
0.07
mA
mA
CC
+
+
Supply Current When OFF I(V )
V
V
= 3V, V = 8V, V
= 0.1V
ON/OFF
0.10
0.10
0.20
0.20
mA
mA
CC
CC
–
–
Supply Current When OFF I(V )
= 3V, V = –8V, V
= 0.1V
ON/OFF
2
LT1332
ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
l
l
ON/OFF Pin Thresholds
Input Low Level (Device Shut Down)
Input High Level (Device Enabled)
0.7
0.6
0.3
80
V
V
1.3
l
ON/OFF Pin Current
Drivers
0V ≤ V
≤ 5V
–15
µA
ON/OFF
l
l
Output Voltage Swing
R = 3k to GND
Positive
Negative
5.0
2.0
6.6
V
V
L
–7.0
–5.0
0.8
l
l
Logic Input Voltage Level
Input Low Level (V
Input High Level (V
= High)
= Low)
1.4
1.4
V
V
OUT
OUT
l
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Driver Output ESD Rating
Slew Rate
0.8V ≤ V ≤ 2.0V
5
20
100
30
µA
mA
µA
IN
V
= 0V
17
10
10
OUT
l
SHUTDOWN V
=
30V, V
= 0.1V
ON/OFF
OUT
Human Body Model Discharge
R = 3k, C = 51pF
kV
15
6
V/µs
V/µs
L
L
R = 3k, C = 2500pF
4
L
L
Propagation Delay
Output Transition t
Output Transition t
High to Low (Note 5)
Low to High
0.6
0.5
1.3
1.3
µs
µs
PHL
PLH
Receivers
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
1.0
7
l
Hysteresis
0.1
3
0.4
5
V
kΩ
kV
Input Resistance
Receiver Input ESD Rating
Output Voltage
Human Body Model Discharge
Output Low, I = –500µA
10
l
l
0.2
2.9
0.4
V
V
OUT
OUT
Output High, I
= 100µA (V = 3V)
2.7
2
CC
l
Output Leakage Current
SHUTDOWN (Note 6) 0 ≤ V
≤ V
1
10
–2
µA
OUT
CC
Output Short-Circuit Current
Sinking Current, V
= V
OUT
–4
4
mA
mA
OUT
CC
= 0V
Sourcing Current, V
Propagation Delay
Output Transition t High to Low (Note 7)
1
0.6
3
3
µs
µs
HL
Output Transition t Low to High
LH
The
l
denotes specifications which apply over the full operating
Note 5: For driver delay measurements, R = 3k and C = 51pF. Trigger
L L
temperature range.
Note 1: Absolute maximum ratings are those values beyond which the life
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).
PHL
PLH
of the device may be impaired.
Note 6: Receiver RXA (Pins 10 and 15, S Package) remains functioning in
SHUTDOWN.
+
–
Note 2: Testing is done at V = 3V, V = 8V, V = –8V, and
CC
V
= 3V.
Note 7: For receiver delay measurements, C = 51pF. Trigger points are set
between the receiver’s input logic threshold and the output transition to
ON/OFF
L
Note 3: Supply current is measured with all driver inputs tied high.
Note 4: Supply current measurements in SHUTDOWN are performed with
V
standard TTL/CMOS logic threshold (t = 1.3V to 2.4V and t = 1.7V to
LH
HL
0.8V).
+
–
= 0.1V, V = 0V, V = 0V.
ON/OFF
3
LT1332
TYPICAL PERFORMANCE CHARACTERISTICS
Unloaded Supply Current
vs Temperature
Supply Current vs Data Rate
ON/OFF Threshold vs Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.6
16
14
12
10
8
R
= 3k
L
L
1.4
1.2
C
= 2500pF
ALL DRIVERS LOADED
–
I(V )
DRIVER OUTPUTS HIGH
–
I(V )
1.0
0.8
0.6
0.4
0.2
+
I(V
)
I(V )
CC
+
I(V )
6
DRIVER OUTPUTS LOW
4
2
I(V
)
CC
0
0
–25
0
50
75 100 125
–50
50
100 125
150
–50
25
–25
0
25
75
0
20 40 60 80 100 120 140 160 180 200
DATA RATE (k BAUD)
TEMPERATURE (°C)
TEMPERATURE (°C)
LT1332 • TPC03
LT1332 • TPC01
LT1332 • TPC02
Leakage Current in Shutdown
vs Temperature
Driver Short-Circuit Current
vs Temperature
Driver Leakage in Shutdown
vs Temperature
150
125
100
75
30
25
20
15
10
5
100
10
1
+
I(V ) = 8V
+
I
I
SC
SC
–
I(V ) = – 8V
V
= 30V
OUT
–
V
= –30V
OUT
50
25
0
I(V ) = 3V
CC
0
0.1
–50 –25
75 100
TEMPERATURE (°C)
–50 –25
0
25 50
125 150
50
TEMPERATURE (°C)
100 125
–50 –25
0
25
75
0
25
50
75 100 125
TEMPERATURE (°C)
LT1332 • TPC05
LT1332 • TPC06
LT1027 • TPC04
Driver Output Voltage
vs Temperature
Receiver Short-Circuit Current
vs Temperature
Slew Rate vs Load Capacitance
15
14
13
12
11
10
9
8
6
30
25
20
15
10
5
R
= 3k
L
–
INPUT LOW
+
SR
V
V
V
= 8V
–
= –8V
4
= 3V
CC
–
2
I
SC
0
–2
–4
–6
–8
8
+
7
I
SC
+
SR
6
5
INPUT HIGH
50 75
4
0
0
500 1000 1500 2000 2500 3000
CAPACITANCE (pF)
75 100
TEMPERATURE (°C)
–50 –25
0
25 50
125 150
–50 –25
0
25
100 125 150
TEMPERATURE (°C)
LT1332 • TPC07
LT1332 • TPC09
LT1332 • TPC08
4
LT1332
TYPICAL PERFORMANCE CHARACTERISTICS
Receiver Input Thresholds
vs Temperature
Receiver Output Voltage
vs Supply koltage
Receiver Input Thresholds
vs Supply koltage
5
2.5
2.0
1.5
1.0
0.5
0
0.6
0.5
0.4
0.3
0.2
0.1
0
V
= 3V
CC
RECEIVER
OUTPUT LOW
SINKING 500µA
4
3
V
HIGH
TH
V
HIGH
LOW
TH
RECEIVER
OUTPUT LOW
SINKING 250µA
V
LOW
TH
RECEIVER
OUTPUT HIGH
2
1
0
(V – V
)
CC
OUT
V
TH
SOURCING
4.0
SUPPLY VOLTAGE (V)
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
2.0 2.5 3.0 3.5
4.5 5.0 5.5 6.0
50
25
TEMPERATURE (°C)
–50 –25
0
75 100 125 150
LT1332 • TPC10
LT1332 • TPC12
LT1332 • TPC11
Receiver Output Waveforms
Driver Output Waveforms
INPUT
5V/DIV
INPUT
5V/DIV
DRIVER
OUTPUT
R
= 3k
L
C
L
= 2500pF
10V/DIV
RX OUTPUT
C
L
= 50pF
2V/DIV
DRIVER
OUTPUT
L
R
= 3k
10V/DIV
LT1332 • TPC13
LT1332 • TPC13
PIN FUNCTIONS
CC
accommodate a wide range of logic levels, yet the system
still responds correctly to RS232 signals. Supply current
drops to 40µA in the SHUTDOWN mode. This pin should
be decoupled with a 0.1µF ceramic capacitor.
+
+
V : Input Supply Pin. V can vary from 2V to 6V to
V : Positive Supply Input (RS232 Drivers). V should
be greater than 6.5V and less than 13.2V to assure
valid RS232 output signals. An additional decoupling
CC
+
capacitor may be required if the V generator is located
far away from the LT1332.
–
GND: Ground Pins. Pins 13 and 23 (S Package) must both
be grounded for proper operation.
V :NegativeSupplyPin(RS232Drivers).Thispinrequires
an external capacitor. When the device is powered from a
switching regulator, the filter capacitor should be selected
based on the maximum tolerable ripple for the specified
minimum regulator on time. For some low frequency
ON/OFF: Controls the operation mode of the device
and is CMOS compatible. A logic low puts the device
in the SHUTDOWN mode which reduces input supply
current to 40µA and places all of the drivers and four
of the receivers in a high impedance state. A logic high
fully enables the device.
™
Burst Mode regulators, the filter capacitor should be
relatively large (C ≥ 10µF). Low ESR tantalum capacitors
™
Burst Mode is a trademark of Linear Technology Corporation
5
LT1332
PIN FUNCTIONS
–
the outputs are protected, short circuits on one output
can load the power supply generator and may disrupt
thesignallevelsoftheotheroutputs.Thedriveroutputs
are protected against ESD to 10kV for human body
model discharges.
work well in this application. When V is powered from
an external supply, the filter capacitor can be considerably
smaller (C ≥ 0.1µF). Ceramic capacitors work well under
–
these conditions. V should be greater than –13.2V and
less than –6.5V.
–
RX IN: Receiver Inputs. These pins accept RS232 level
signals ( 5V to 30V) into a protected 5k terminating
resistor. The receiver inputs are protected against ESD
to 10kV for human body model discharges. Each re-
ceiver provides 0.4V of hysteresis for noise immunity.
C : Commutating Capacitor Input. When the LT1332 is
used with a switching regulator, a charge pump capacitor
should be connected from the regulator’s switch pin to the
–
C pin. Make the external capacitor 1µF or larger with low
effective series resistance to maintain good charge pump
efficiency. Low ESR tantalum capacitors (ESR < 2Ω) work
The receiver thresholds are specified at V = 3V. When
CC
–
V
CC varies from 2V to 6V, the lower threshold increases
well in this application. The C pin should be left open
when V is powered from an external supply.
–
about 3V. Regardless of these shifts, the device provides
accurate data from valid RS232 input signals. A graph
in the performance characteristics section shows typi-
cal changes in the thresholds. The active receiver (RXA,
Pin 10, S Package) remains functional in SHUTDOWN.
DRIVER IN: RS232 Driver Input Pins. Inputs are TTL/
CMOS compatible, with threshold set to 1.2V. Unused
inputs should not float; tie them to V .
CC
DRIVER OUT: Driver Outputs at RS232 Voltage Levels.
RXOUT:ReceiverOutputswithTTL/CMOSVoltageLevels.
OutputsareinahighimpedancestagewheninSHUTDOWN
mode to allow data line sharing. Outputs are fully short-
Outputs are in a high impedance state when in SHUT-
DOWN mode, or V = 0V. Outputs are fully short-circuit
CC
–
+
protected from V + 30V to V – 30V with the power on,
off or SHUTDOWN. Typical breakdowns are 45V.
Applying higher voltages will not damage the device if
the overdrive is moderately current limited. Although
circuit protected to ground or V with the power on, off
CC
or in SHUTDOWN mode. The active receiver (RXA, Pin 15,
S Package) remains functional in SHUTDOWN.
ESD PROTECTION
ESD Test Circuit
TheRS232lineinputsoftheLT1332haveon-chipprotection
fromESDtransientsupto 10kV.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 LT1332 must
be connected to ground through low impedances. The
power supply decoupling capacitors and charge pump
storage capacitors provide this low impedance in normal
applications of the circuit. The only constraint is that low
+
–
–
V
C
1
2
24
V
–12V
0.1µF
12V
23 GND
22
0.1µF
3
DRIVER IN
DRIVER OUT
RX IN
4
21
20
19
18
17
16
15
14
13
RX OUT
5
DRIVER IN
RX OUT
DRIVER OUT
RX IN
6
RS232
LINE PINS
PROTECTED
TO 10ꢀV
7
RX OUT
RX IN
8
RX OUT
RX IN
9
DRIVER IN
RXA OUT
RS232 ON/OFF
GND
DRIVER OUT
RXA IN
ESR capacitors must be used for bypassing and charge
10
11
12
+
storage. ESD testing must be done with pins V , V ,
CC
–
NC
3V V
CC
V and GND shorted to ground or connected with low
LT1332
3V
ESR capacitors.
0.1µF
LT1332 • TC
6
LT1332
APPLICATIONS INFORMATION
Operation with a Switching Regulator
capacitors should be used in the charge pump to reduce
–
voltage losses. The C capacitor should be at least 1µF
The LT1332 is designed to be powered from an external
switchingregulatorwhichmaybeusedelsewhereforpower
conditioning. In a typical application, the LT1332 shares
theregulator’spositiveoutput, whilechargeiscapacitively
pumped from the regulator’s switch pin to the negative
supply. Schottky rectifiers built into the LT1332 simplify
the charge pump design. When used with a micropower
switcher like the LT1109A, the Burst Mode operation of
the charge pump resembles the switching characteristics
of the LT1237 and similar devices.
–
and the V capacitor should be 5 to 10 times bigger. As
–
a rule of thumb, make the V capacitor at least 1/DC
MIN
is the
–
times bigger than the C capacitor where DC
MIN
regulator’s minimum duty cycle. Using large values for
–
–
the V capacitor reduces ripple on the V supply.
Multiple Transceivers
™
The circuit in Figure 1 demonstrates how the LT1332 may
be used with different types of switching regulators. Four
LT1332sarepoweredfromasinglePWMDC/DCconverter
using an LT1172. Even with all twelve drivers heavily
–
TheV supplyisnotdirectlyregulated.Thecircuitrelieson
cross regulation and the regulator’s minimum duty cycle
loaded (R = 3k, C = 2500pF), the circuit generates fully
L
L
–
–
–
to control V . Select the C and V storage capacitors so
that when the regulator operates at minimum duty cycle,
compliant RS232 signals at 120k baud.
–
sufficient charge will transfer to the V storage cap to
maintain a voltage of at least –6.5V.
Operations with External Supplies
+
When external RS232 supplies are available (6.5V ≤ V
–
While only 0.1µF ceramic decoupling capacitors are
needed on the positive supply inputs, low ESR tantalum
≤ 13.2V, –13.2V ≤ V ≤ –6.2V) the LT1332 can be
used as a stand-alone unit. Capacitor selection is
+
+
+
+
1µF
1µF
1µF
1µF
+
–
–
+
–
–
+
–
–
+
–
–
V
C
V
V
C
V
V
C
V
V
C
V
0.1µF
0.1µF
10µF 0.1µF
10µF 0.1µF
10µF 0.1µF
10µF
+
+
+
+
LT1332
LT1332
LT1332
LT1332
GND
GND
GND
GND
ON/OFF
GND
ON/OFF
GND
ON/OFF
GND
ON/OFF
GND
CC
3V V
CC
3V V
3V V
3V V
3V V
CC
CC
CC
INPUT
0.1µF
0.1µF
0.1µF
ON/OFF
*
**
L1 = SUMIDA CD105-101K OR COILCRAFT DO3316-104
1% METAL FILM
2.7V < V < 5.5V
IN
L1*
100µH
I(V ) < 14mA (UNLOADED)
IN
8V
1N5817
V
IN
+
+
68µF
22µF
V
V
SW
IN
135k**
LT1172
FB
GND
V
C
25k**
1k
0.1µF
OPTIONAL
SHUTDOWN
VN2222LL
LT1332 • F01
Figure 1. Multiple LT1332s Powered from a Single LT1172 DC/DC Converter
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
7
LT1332
APPLICATIONS INFORMATION
considerably simpler. Decouple V+ and V– with 0.1µF
ceramic capacitors.
entersmicropowershutdownmodeinwhichthecurrent
drawn from VCC drops to typically 40µA. If the power
applied to V+ and V– remains on in shutdown, there will
be approximately 100µA of leakage from each supply. If
these supplies drop to zero, leakage current also drops
to zero. In shutdown mode one receiver remains active
which may be useful for detecting start-up signals for
the transceiver.
Shutdown Control
The LT1332 has an ON/OFF pin that controls the device’s
mode of operation. With the ON/OFF pin high and the
device operated unloaded, the LT1332 draws 1mA of
supply current. With the ON/OFF pin low, the device
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
G Package
28-Lead Plastic SSOP
0.397 – 0.407*
(10.07 – 10.33)
0.205 – 0.212*
(5.20 – 5.38)
0.068 – 0.078
(1.73 – 1.99)
28 27 26 25 24 23 22 21 20 19 18
16 15
17
0° – 8°
0.301 – 0.311
(7.65 – 7.90)
0.045
(1.14)
0.0256
(0.65)
BSC
0.022 – 0.037
(0.55 – 0.95)
0.005 – 0.009
(0.13 – 0.22)
0.002 – 0.008
(0.05 – 0.21)
0.010 – 0.015
(0.25 – 0.38)
5
7
8
1
2
3
4
6
9
10 11 12 13 14
0.045
(1.14)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
N Package
28-Lead Plastic DIP
1.455
(36.957)
MAX
0.070
(1.778)
TYP
0.600 – 0.625
(15.240 – 15.875)
0.130 0.005
(3.302 0.127)
0.045 – 0.065
(1.143 – 1.651)
28 27 26 25 24 23 22 21 20 19 18 17 16 15
0.015
(0.381)
MIN
0.505 – 0.560
(12.827 – 14.224)
0.009 – 0.015
(0.229 – 0.381)
+0.025
0.035 – 0.080
(0.889 – 2.032)
0.125
(3.175)
MIN
0.625
0.018 0.003
(0.457 0.076)
–0.015
+0.635
15.87
1
2
3
4
5
6
7
8
9
10 11 12 13 14
0.100 0.010
(2.540 0.254)
(
)
–0.381
S Package
24-Lead Plastic SOL
0.291 – 0.299
(7.391 – 7.595)
(NOTE 2)
0.598 – 0.614
(15.190 – 15.600)
(NOTE 2)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
24 23 22 21 20 19 18
16 15 14 13
17
0.005
(0.127)
RAD MIN
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.050
(1.270)
TYP
0.394 – 0.419
(10.007 – 10.643)
NOTE 1
0.004 – 0.012
(0.102 – 0.305)
0.009 – 0.013
(0.229 – 0.330)
NOTE 1
0.014 – 0.019
(0.356 – 0.482)
0.016 – 0.050
(0.406 – 1.270)
NOTE:
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.
2
3
5
7
8
9
10
1
4
6
11 12
2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
LT 0211 REV B • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
8
●
●
LINEAR TECHNOLOGY CORPORATION 1993
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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