LTC1350 [Linear]
3.3V Low Power EIA/TIA-562 3-Driver/ 5-Receiver Transceiver; 3.3V低功耗EIA / TIA- 562 3驱动器/ 5接收器收发器
| 型号： | LTC1350 |
| 厂家： | 
Linear |
| 描述： | 3.3V Low Power EIA/TIA-562 3-Driver/ 5-Receiver Transceiver |
| 文件： | 总8页 (文件大小：221K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC1350
3.3V Low Power
EIA/TIA-562 3-Driver/
5-Receiver Transceiver
U
DESCRIPTIO
EATURE
Low Supply Current
Receivers 4 and 5 Kept Alive
in SHUTDOWN
ESD Protection
Operates from a Single 3.3V Supply
Uses Small Capacitors
Operates to 120k Baud
Three-State Outputs are High Impedance
When Off
Output Overvoltage Does Not Force Current
Back into Supplies
S
F
■
300µA
The LTC1350 is a 3-driver/5-receiver EIA/TIA-562 trans-
ceiver with very low supply current. In the no load condi-
tion, the supply current is only 300µA. The charge pump
only requires four 0.1µF capacitors.
■
35µA
±10kV
■
■
■
■
■
In SHUTDOWN mode, two receivers are kept alive and
the supply current is only 35µA. All RS232 outputs
assume a high impedance state in SHUTDOWN or with
the power off.
0.1µF
■
■
■
The LTC1350 is fully compliant with all data rate and
overvoltage EIA/TIA-562 specifications. The transceiver
can operate up to 120k baud with a 1000pF and 3kΩ
load. Both driver outputs and receiver inputs can be
forcedto±25Vwithoutdamageandcansurvivemultiple
±10kV ESD strikes.
EIA/TIA-562 I/O Lines Can Be Forced to ±25V
Without Damage
Flowthrough Architecture
O U
PPLICATI
Notebook Computers
Palmtop Computers
S
A
■
■
U
O
TYPICAL APPLICATI
Quiescent and Shutdown Supply Current vs Temperature
3-Drivers/5-Receivers with Shutdown
600
500
400
300
85
75
65
55
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+
–
TEST CONDITION: V = 3.3V
CC
V
V
ALL DRIVER INPUTS TIED TO V
CC
+
–
V
LTC1350
C2
C2
CC
+
3
C1
C1
4
–
DR1 IN
RX1 OUT
DR2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
RX5 OUT
GND
QUIESCENT
CURRENT
5
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
ON/OFF
NC
6
7
8
200
100
0
45
35
0
9
SHUTDOWN CURRENT
10
11
12
13
14
40
TEMPERATURE (˚C)
80 100
–40 –20
0
20
60
NC
LTC1350 • TA02
NC
LTC1350 • TA01
1
LTC1350
W W W
U
/O
ABSOLUTE AXI U RATI GS
PACKAGE RDER I FOR ATIO
Supply Voltage (VCC) ................................................ 5V
Input Voltage
Driver ....................................... –0.3V to VCC + 0.3V
Receiver ............................................... – 25V to 25V
ON/OFF Pin ................................ –0.3V to VCC + 0.3V
Output Voltage
TOP VIEW
ORDER PART
+
–
NUMBER
V
1
2
3
4
5
6
7
8
9
28
V
+
–
V
27 C2
26 C2
CC
+
C1
C1
LTC1350CG
LTC1350CN
LTC1350CS
LTC1350IG
LTC1350IN
LTC1350IS
–
25 DR1 IN
24 RX1 OUT
23 DR2 IN
22 RX2 OUT
21 RX3 OUT
20 RX4 OUT
19 DR3 IN
18 RX5 OUT
17 GND
DR1 OUT
RX1 IN
Driver .................................................... – 25V to 25V
Receiver .................................... – 0.3V to VCC + 0.3V
Short-Circuit Duration
DR2 OUT
RX2 IN
RX3 IN
V+ ................................................................... 30 sec
V– ................................................................... 30 sec
Driver Output.............................................. Indefinite
Receiver Output.......................................... Indefinite
Operating Temperature Range
RX4 IN 10
DR3 OUT 11
RX5 IN 12
ON/OFF 13
NC 14
16 NC
15 NC
Commercial (LTC1350C) ........................ 0°C to 70°C
Industrial (LTC1350I) ........................ –40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
G PACKAGE
28-LEAD SSOP
N PACKAGE
28-LEAD PLASTIC DIP
S PACKAGE
28-LEAD PLASTIC SOL
TJMAX = 125°C, θJA = 96°C/W (G)
TJMAX = 125°C, θJA = 56°C/W (N)
TJMAX = 125°C, θJA = 85°C/W (S)
Consult factory for Military grade parts
DC ELECTRICAL CHARACTERISTICS
VCC = 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Any Driver
Output Voltage Swing
3k to GND
Positive
Negative
●
●
3.7
–3.7
4.5
– 4.5
V
V
Logic Input Voltage Level
Logic Input Current
Input Low Level (V
Input High Level (V
= High)
= Low)
●
●
1.4
1.4
0.8
V
V
µA
µA
OUT
2.0
OUT
V
IN
V
IN
= V
= 0V
●
●
5
–5
CC
Output Short-Circuit Current
Output Leakage Current
Any Receiver
V
= 0V
±10
10
mA
µA
OUT
SHUTDOWN (Note 3), V
= ±20V
500
OUT
Input Voltage Thresholds
Input Low Threshold
Input High Threshold
●
●
0.8
1.3
1.7
0.4
5
0.2
3.2
–20
1
V
V
V
kΩ
V
V
2.4
1
7
Hysteresis
Input Resistance
Output Voltage
●
0.1
3
V
IN
= ±10V
Output Low, I
Output High, I
= – 1.6mA (V = 3.3V)
= 160µA (V = 3.3V)
●
●
0.4
OUT
CC
3.0
–3
OUT
CC
Output Short-Circuit Current
Output Leakage Current
Sinking Current, V
= V
mA
µA
OUT
CC
SHUTDOWN (Note 3), 0V ≤ V
≤ V
●
10
OUT
CC
2
LTC1350
DC ELECTRICAL CHARACTERISTICS V
CC = 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply Generator
+
V Output Voltage
I
I
I
I
= 0mA
= 5mA
= 0mA
5.7
5.5
–5.3
–5.0
V
V
V
V
OUT
OUT
–
V Output Voltage
OUT
OUT
= –5mA
Supply Rise Time
SHUTDOWN to Turn-On
0.2
ms
Power Supply
V
CC
Supply Current
No Load (All Drivers V = V )(Note 2) 0°C ≤ T ≤ 70°C
●
●
●
●
●
0.3
0.5
0.3
0.5
35
0.6
1.0
1.0
1.5
50
mA
mA
mA
mA
µA
IN
CC
A
No Load (All Drivers V = 0)(Note 2) 0°C ≤ T ≤ 70°C
IN
A
No Load (All Drivers V = V )(Note 2) –40°C ≤ T ≤ 85°C
IN
CC
A
No Load (All Drivers V = 0)(Note 2) –40°C ≤ T ≤ 85°C
IN
A
SHUTDOWN (Note 3)
ON/OFF Threshold Low
ON/OFF Threshold High
●
●
1.4
1.4
0.8
V
V
2.0
VCC = 5V, C1 = C2 = C3 = C4 = 0.1µF, unless otherwise noted.
AC CHARACTERISTICS
PARAMETER
CONDITIONS
R = 3k, C = 51pF
MIN
TYP
MAX
UNITS
Slew Rate
8
5
30
V/µs
V/µs
L
L
R = 3k, C = 1000pF
3
L
L
Driver Propagation Delay
(TTL to EIA/TIA-562)
t
t
(Figure 1)
(Figure 1)
●
●
2
2
3.5
3.5
µs
µs
HLD
LHD
Receiver Propagation Delay
(EIA/TIA-562 to TTL)
t
t
(Figure 2)
(Figure 2)
●
●
0.3
0.3
0.8
0.8
µs
µs
HLR
LHR
The
●
denotes specifications which apply over the operating temperature
Note 2: Supply current is measured with driver and receiver outputs
unloaded.
range of 0°C ≤ T ≤ 70°C for commercial grade, –40°C ≤ T ≤ 85°C for
A
A
Industrial grade.
Note 3: Supply current measurement in SHUTDOWN mode is performed
with V = 0V.
Note 1: Absolute maximum ratings are those values beyond which the life
ON/OFF
of the device may be impaired.
3
LTC1350
TYPICAL PERFOR A CE CHARACTERISTICS
W U
Receiver Input Thresholds
vs Temperature
Driver Output Voltage
vs Temperature
Supply Current vs Data Rate
5
4
30
25
20
15
2.2
2.0
1.8
1.6
V
R
C
= 3.3V
CC
L
V
= 3.3V
CC
= 3k
OUTPUT HIGH
= 2500pF
3
L
3 DRIVERS ACTIVE
2
+
V
TH
1
0
ALL DRIVERS WITH LOAD, R = 3k
L
–
V
TH
–1
–2
–3
–4
–5
10
5
1.4
1.2
1.0
V
= 3.3V
CC
OUTPUT LOW
0
–40
0
20
40
60
80 100
40
TEMPERATURE (˚C)
80
100
0
20
40
60
80
100 120 140
–20
–40 –20
0
20
60
TEMPERATURE (°C)
DATA RATE (k Baud)
LTC1350 • TPC01
LTC1350 • TPC03
LT1350 • TPC02
VCC Supply Current
vs Temperature
Driver Leakage in Shutdown
vs Temperature
Driver Short-Circuit Current
vs Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
16
45
40
35
30
25
20
15
10
5
14
12
R
L
= 3k
3 DRIVERS LOADED
–
I
SC
10
8
V
= –20V
OUT
+
I
SC
R
L
= 3k
6
1 DRIVER LOADED
4
V
= 20V
50
OUT
40
2
0
0
–40
0
20
40
60
80 100
–40 –20
0
20
40
60
80 100
–20
30
0
10
20
60
70
TEMPERATURE (°C)
TEMPERATURE (˚C)
TEMPERATURE (°C)
LTC1350 • TPC04
LTC1350 • TPC06
LTC1350 • TPC05
Receiver Short-Circuit Current
vs Temperature
Driver Output Waveforms
Receiver Output Waveform
40
DRIVER
OUTPUT
35
30
RL = 3k
RECEIVER
OUTPUT
C
L = 1000pF
C
L = 50pF
DRIVER
OUTPUT
RL = 3k
25
20
15
10
5
–
I
SC
INPUT
INPUT
+
I
SC
LTC1350 • TPC08
LTC1350 • TPC09
0
–20
0
40
60
80 100
–40
20
TEMPERATURE (˚C)
LTC1350 • TPC07
4
LTC1350
U
U
U
PI FU CTIO S
VCC: 3.3V Input Supply Pin. Supply current is typically
35µA in the SHUTDOWN mode. This pin should be de-
coupled with a 0.1µF ceramic capacitor.
C1+,C1–,C2+,C2–:CommutatingCapacitorInputs.These
pins require two external capacitors (C = 0.1µF): one from
C1+ to C1– and another from C2+ to C2–. To maintain
charge pump efficiency, the capacitor’s effective series
resistance should be less than 20Ω.
GND: Ground Pin.
ON/OFF: TTL/CMOS Compatible Shutdown Pin. A logic
low puts the device in the SHUTDOWN mode with receiv-
ers4and5keptaliveandthesupplycurrentequalto35µA.
Alldriverandotherreceiveroutputsareinhighimpedance
state. This pin cannot float.
V+: Positive Supply Output. V+ 2VCC – 1V. This pin
requires an external capacitor (C = 0.1µF) for charge
storage. The capacitor may be tied to ground or VCC. With
multipledevices,theV +andV– pinsmaybeparalleledinto
common capacitors. For a large number of devices, in-
creasing the size of the shared common storage capaci-
tors is recommended to reduce ripple.
DR IN: EIA/TIA-562 Driver Input Pins. Inputs are TTL/
CMOS compatible. Inputs should not be allowed to float.
Tie unused inputs to VCC.
DR OUT: Driver Outputs at EIA/TIA-562 Voltage Levels.
Outputs are in a high impedance state when in the SHUT-
DOWNmodeorVCC =0V. Thedriveroutputsareprotected
against ESD to ±10kV for human body model discharges.
RX IN: Receiver Inputs. These pins can be forced to ±25V
withoutdamage. Thereceiverinputs are protectedagainst
ESD to ±10kV for human body model discharges. Each
receiver provides 0.4V of hysteresis for noise immunity.
V–: Negative Supply Output. V – –(2VCC – 1.3V). This
pin requires an external capacitor (C = 0.1µF) for charge
storage.
RX OUT: Receiver Outputs with TTL/CMOS Voltage Lev-
els. Receiver 1, 2 and 3 outputs are in a high impedance
statewheninSHUTDOWNmodetoallowdatalinesharing.
Receivers 4 and 5 are kept alive in SHUTDOWN.
U
W
W
SWITCHI G TI E WAVEFOR S
V
CC
V
CC
1.7V
RX
DR
1.3V
INPUT
1.4V
1.4V
INPUT
0V
V
0V
+
V
CC
DR
OUTPUT
RX
OUTPUT
2.4V
0V
0V
–
0.8V
V
0V
t
t
t
LHD
t
HLD
LHR
HLR
LTC1350 • F01
LTC1350 • F02
Figure 1. Driver Propagation Delay Timing
Figure 2. Receiver Propagation Delay Timing
5
LTC1350
TEST CIRCUITS
Receiver Timing Test Load
Driver Timing Test Load
DRIVER
OUTPUT
RX
OUTPUT
DRIVER
INPUT
RX INPUT
DRIVER
RX
51pF
51pF
3k
LTC1350 • TA04
LTC1350 • TA03
ESD Test Circuit
–
+
V
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
LTC1350
C1
0.1µF
C4
0.1µF
V
CC
C3
0.1µF
3
C2
0.1µF
4
DR1 IN
5
RX1 OUT
DR2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
RX5 OUT
GND
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
ON/OFF
NC
6
7
RS232
LINE PINS
PROTECTED
TO ±10kV
8
9
10
11
12
13
14
NC
NC
LTC1350 • TC
6
LTC1350
U
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
G Package
28-Lead 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
0.005 – 0.009
(0.55 – 0.95)
(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
28-Lead Plastic SOL
0.697 – 0.712
(17.70 – 18.08)
(NOTE 2)
0.291 – 0.299
(7.391 – 7.595)
(NOTE 2)
0.037 – 0.045
(0.940 – 1.143)
0.005
(0.127)
RAD MIN
0.093 – 0.104
(2.362 – 2.642)
28 27 26 25 24 23 22 21 20 19 18
16 15
17
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.394 – 0.419
(10.007 – 10.643)
NOTE 1
0.050
(1.270)
TYP
0.009 – 0.013
(0.229 – 0.330)
0.014 – 0.019
(0.356 – 0.482)
0.004 – 0.012
(0.102 – 0.305)
NOTE 1
0.016 – 0.050
(0.406 – 1.270)
NOTE:
1
2
3
5
7
8
9 10 11 12 13 14
4
6
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. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
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 represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
7
LTC1350
U.S. Area Sales Offices
SOUTHEAST REGION
Linear Technology Corporation
17060 Dallas Parkway
Suite 208
Dallas, TX 75248
Phone: (214) 733-3071
FAX: (214) 380-5138
SOUTHWEST REGION
Linear Technology Corporation
22141 Ventura Blvd.
NORTHEAST REGION
Linear Technology Corporation
One Oxford Valley
2300 E. Lincoln Hwy.,Suite 306
Langhorne, PA 19047
Phone: (215) 757-8578
FAX: (215) 757-5631
Suite 206
Woodland Hills, CA 91364
Phone: (818) 703-0835
FAX: (818) 703-0517
CENTRAL REGION
Linear Technology Corporation
Chesapeake Square
NORTHWEST REGION
Linear Technology Corporation
782 Sycamore Dr.
Linear Technology Corporation
266 Lowell St., Suite B-8
Wilmington, MA 01887
229 Mitchell Court, Suite A-25
Addison, IL 60101
Phone: (708) 620-6910
FAX: (708) 620-6977
Milpitas, CA 95035
Phone: (408) 428-2050
FAX: (408) 432-6331
Phone: (508) 658-3881
FAX: (508) 658-2701
International Sales Offices
KOREA
FRANCE
Linear Technology Korea Branch
Namsong Building, #505
Itaewon-Dong 260-199
Yongsan-Ku, Seoul
Korea
TAIWAN
Linear Technology S.A.R.L.
Immeuble "Le Quartz"
58 Chemin de la Justice
92290 Chatenay Malabry
France
Linear Technology Corporation
Rm. 801, No. 46, Sec. 2
Chung Shan N. Rd.
Taipei, Taiwan, R.O.C.
Phone: 886-2-521-7575
FAX: 886-2-562-2285
Phone: 82-2-792-1617
FAX: 82-2-792-1619
Phone: 33-1-41079555
FAX: 33-1-46314613
SINGAPORE
UNITED KINGDOM
GERMANY
Linear Technology Pte. Ltd.
101 Boon Keng Road
#02-15 Kallang Ind. Estates
Singapore 1233
Linear Technology (UK) Ltd.
The Coliseum, Riverside Way
Camberley, Surrey GU15 3YL
United Kingdom
Linear Techonolgy GMBH
Untere Hauptstr. 9
D-85386 Eching
Germany
Phone: 65-293-5322
FAX: 65-292-0398
Phone: 44-276-677676
FAX: 44-276-64851
Phone: 49-89-3197410
FAX: 49-89-3194821
JAPAN
Linear Technology KK
5F YZ Bldg.
4-4-12 Iidabashi, Chiyoda-Ku
Tokyo, 102 Japan
Phone: 81-3-3237-7891
FAX: 81-3-3237-8010
World Headquarters
Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA 95035-7487
Phone: (408) 432-1900
FAX: (408) 434-0507
08/16/93
LT/GP 1293 10K REV 0 • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1993
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
8
●
●
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
相关型号：
LTC1350CG#TRPBF
LTC1350 - 3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver; Package: SSOP; Pins: 28; Temperature Range: 0°C to 70°C
Linear
LTC1350CSW#PBF
LTC1350 - 3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver; Package: SO; Pins: 28; Temperature Range: 0°C to 70°C
Linear
LTC1350CSW#TR
LTC1350 - 3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver; Package: SO; Pins: 28; Temperature Range: 0°C to 70°C
Linear
LTC1350CSW#TRPBF
LTC1350 - 3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver; Package: SO; Pins: 28; Temperature Range: 0°C to 70°C
Linear
©2020 ICPDF网 联系我们和版权申明