LTC1350CG#TRPBF [Linear]
LTC1350 - 3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver; Package: SSOP; Pins: 28; Temperature Range: 0°C to 70°C;
| 型号： | LTC1350CG#TRPBF |
| 厂家： | 
Linear |
| 描述： | LTC1350 - 3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver; Package: SSOP; 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8页 (文件大小：114K) |
| 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
FEATURES
DESCRIPTIO
The LTC®1350 is a 3-driver/5-receiver EIA/TIA-562
transceiver with very low supply current. In the no load
condition, the supply current is only 300µA. The charge
pump only requires four 0.1µF capacitors.
■
Low Supply Current: 300µA
■
Receivers 4 and 5 Kept Alive
in Shutdown: 35µA
ESD Protection: ±10kV
Operates from a Single 3.3V Supply
Uses Small Capacitors: 0.1µF
Operates to 120kBaud
Three-State Outputs are High Impedance
When Off
■
■
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.
■
■
■
■
■
■
The LTC1350 is fully compliant with all data rate and
Output Overvoltage Does Not Force Current
Back into Supplies
EIA/TIA-562 I/O Lines Can Be Forced to ±25V
Without Damage
Flowthrough Architecture
overvoltage EIA/TIA-562 specifications. The transceiver
canoperateupto120kbaudwitha1000pFand3kΩload.
Both driver outputs and receiver inputs can be forced to
±25V without damage and can survive multiple ±10kV
ESD strikes.
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
■
Notebook Computers
Palmtop Computers
■
U
TYPICAL APPLICATIO
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
+
–
V
V
TEST CONDITION: V = 3.3V
CC
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
5
QUIESCENT
CURRENT
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
80
100
–40
–20
0
20
60
TEMPERATURE (˚C)
NC
LTC1350 • TA02
NC
LTC1350 • TA01
1350fa
1
LTC1350
W W U W
U W
U
ABSOLUTE AXI U RATI GS
PACKAGE/ORDER 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+
CC
+
C1
C1–
26 C2–
LTC1350CG
LTC1350CNW
LTC1350CSW
LTC1350IG
LTC1350INW
LTC1350ISW
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
DR2 OUT
RX2 IN
RX3 IN
Driver .................................................... – 25V to 25V
Receiver .................................... – 0.3V to VCC + 0.3V
Short-Circuit Duration
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
NW PACKAGE
28-LEAD PDIP
SW PACKAGE
28-LEAD PLASTIC SO WIDE
TJMAX = 125°C, θJA = 96°C/W (G)
TJMAX = 125°C, θJA = 56°C/W (NW)
TJMAX = 125°C, θJA = 85°C/W (SW)
Consult LTC Marketing for parts specified with wider operating temperature
ranges.
DC ELECTRICAL CHARACTERISTICS
The ■ denotes specifications which apply over the full operating
temperature range. VCC = 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless 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
V
= V
= 0V
■
■
5
–5
IN
IN
CC
Output Short-Circuit Current
Output Leakage Current
Any Receiver
V
= 0V
±9
±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
= ±10V
IN
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
1350fa
2
LTC1350
DC ELECTRICAL CHARACTERISTICS
The ■ denotes specifications which apply over the full operating
temperature range. VCC = 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless 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
Supply Current
No Load (All Drivers V = V )(Note 2) 0°C ≤ T ≤ 70°C
■
■
■
■
■
■
0.3
0.5
0.3
0.3
0.5
35
0.6
1.0
1.0
1.5
1.5
50
mA
mA
mA
mA
mA
µA
CC
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) 0°C ≤ T ≤ 85°C
IN
CC
A
No Load (All Drivers V = V )(Note 2) –40°C ≤ T ≤ 0°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
AC CHARACTERISTICS
The ■ denotes specifications which apply over the full operating temperature range.
VCC = 5V, C1 = C2 = C3 = C4 = 0.1µF, unless noted.
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
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 3: Supply current measurement in Shutdown mode is performed
with V = 0V.
ON/OFF
Note 2: Supply current is measured with driver and receiver outputs
unloaded.
1350fa
3
LTC1350
TYPICAL PERFOR A CE CHARACTERISTICS
U W
Receiver Input Thresholds
vs Temperature
Driver Output Voltage
vs Temperature
Supply Current vs Data Rate
5
4
2.2
2.0
1.8
1.6
30
25
20
15
V
= 3.3V
CC
L
L
V
= 3.3V
CC
OUTPUT HIGH
R
= 3k
3
C
= 2500pF
3 DRIVERS ACTIVE
2
+
1
V
TH
0
ALL DRIVERS WITH LOAD, R = 3k
L
–
V
TH
–1
–2
–3
–4
–5
1.4
1.2
1.0
10
5
V
= 3.3V
CC
OUTPUT LOW
0
–40
0
20
40
60
80 100
–20
40
TEMPERATURE (˚C)
80
100
80
DATA RATE (k Baud)
120 140
–40 –20
0
20
60
0
20
40
60
100
TEMPERATURE (°C)
LTC1350 • TPC01
LT1350 • TPC02
LTC1350 • TPC03
V
CC Supply Current
Driver Leakage in Shutdown
vs Temperature
Driver Short-Circuit Current
vs Temperature
vs Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
45
40
35
30
25
20
15
10
5
16
R
= 3k
L
14
12
3 DRIVERS LOADED
–
I
SC
10
8
V
= –20V
OUT
+
I
R
= 3k
SC
L
6
1 DRIVER LOADED
4
V
= 20V
50
OUT
2
0
0
–40
0
20
40
60
80 100
–20
30
0
10
20
40
60
70
–20
0
40
60
80 100
–40
20
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (˚C)
LTC1350 • TPC04
LTC1350 • TPC05
LTC1350 • TPC06
Receiver Short-Circuit Current
vs Temperature
Driver Output Waveforms
Receiver Output Waveform
40
DRIVER
OUTPUT
RL = 3k
35
30
RECEIVER
OUTPUT
CL = 1000pF
CL = 50pF
DRIVER
OUTPUT
RL = 3k
25
20
15
10
5
–
I
SC
INPUT
INPUT
+
LTC1350 • TPC08
LTC1350 • TPC09
I
SC
0
–20
0
40
60
80 100
–40
20
TEMPERATURE (˚C)
LTC1350 • TPC07
1350fa
4
LTC1350
U
U
U
PI FU CTIO S
VCC: 3.3V Input Supply Pin. Supply current is typically
35µAintheShutdownmode.Thispinshouldbedecoupled
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 receivers
4 and 5 kept alive and the supply current equal to 35µA. All
driver and other receiver outputs are in high impedance
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,
increasing the size of the shared common storage
capacitors 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.
OutputsareinahighimpedancestatewhenintheShutdown
modeorVCC =0V.Thedriveroutputsareprotectedagainst
ESD to ±10kV for human body model discharges.
RX IN: Receiver Inputs. These pins can be forced to ±25V
without damage. The receiver inputs are protected against
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.
RXOUT:ReceiverOutputswithTTL/CMOSVoltageLevels.
Receiver 1, 2 and 3 outputs are in a high impedance state
when in Shutdown mode to allow data line sharing.
Receivers 4 and 5 are kept alive in Shutdown.
U
W
W
SWITCHI G TI E WAVEFOR S
V
CC
DR
INPUT
1.4V
1.4V
0V
+
V
DR
OUTPUT
0V
0V
–
V
t
t
LHD
HLD
LTC1350 • F01
Figure 1. Driver Propagation Delay Timing
V
CC
1.7V
RX
INPUT
1.3V
0V
V
CC
RX
OUTPUT
2.4V
0.8V
0V
t
t
LHR
HLR
LTC1350 • F02
Figure 2. Receiver Propagation Delay Timing
1350fa
5
LTC1350
TEST CIRCUITS
Driver Timing Test Load
Receiver 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 • TC01
1350fa
6
LTC1350
U
PACKAGE DESCRIPTIO
G Package
28-Lead Plastic SSOP (5.3mm)
(Reference LTC DWG # 05-08-1640)
9.90 – 10.50*
(.390 – .413)
1.25 ±0.12
28 27 26 25 24 23 22 21 20 19 18
16 15
17
7.8 – 8.2
5.3 – 5.7
7.40 – 8.20
(.291 – .323)
0.42 ±0.03
0.65 BSC
5
7
8
1
2
3
4
6
9 10 11 12 13 14
RECOMMENDED SOLDER PAD LAYOUT
5.00 – 5.60**
(.197 – .221)
2.0
(.079)
0° – 8°
0.65
(.0256)
BSC
0.09 – 0.25
0.55 – 0.95
(.0035 – .010)
(.022 – .037)
0.05
0.22 – 0.38
(.009 – .015)
(.002)
NOTE:
G28 SSOP 0802
1. CONTROLLING DIMENSION: MILLIMETERS
MILLIMETERS
2. DIMENSIONS ARE IN
(INCHES)
3. DRAWING NOT TO SCALE
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
**DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
NW Package
28-Lead PDIP (Wide .600 Inch)
(Reference LTC DWG # 05-08-1520)
1.467*
(36.957)
MAX
28
27
26
25
24
23
22
21
20
19
18
17
16
15
.505 – .560*
(12.827 – 14.224)
1
2
3
5
7
9
4
6
8
10
11
12
13
14
.600 – .625
(15.240 – 15.875)
.045 – .065
(1.143 – 1.651)
.150 ± .005
(3.810 ± 0.127)
.015
(0.381)
MIN
.070
(1.778)
TYP
.008 – .015
(0.203 – 0.381)
+.035
.625
.035 – .080
(0.889 – 2.032)
–.015
.120
(3.175)
MIN
.018 ± .003
(0.457 ± 0.076)
+0.889
15.87
(
)
–0.381
.100
(2.54)
BSC
NOTE:
INCHES
1. DIMENSIONS ARE
MILLIMETERS
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
NW28 1002
1350fa
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
PACKAGE DESCRIPTIO
SW Package
28-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
.050 BSC .045 ±.005
.030 ±.005
TYP
.697 – .712
(17.70 – 18.08)
NOTE 4
N
28 27 26 25 24 23 22 21 20 19 18
16 15
17
N
.325 ±.005
.420
MIN
.394 – .419
(10.007 – 10.643)
NOTE 3
1
2
3
N/2
N/2
RECOMMENDED SOLDER PAD LAYOUT
.291 – .299
(7.391 – 7.595)
NOTE 4
2
3
5
7
8
9
10 11 12 13 14
1
4
6
.037 – .045
(0.940 – 1.143)
.093 – .104
.010 – .029
× 45°
(2.362 – 2.642)
(0.254 – 0.737)
.005
(0.127)
RAD MIN
0° – 8° TYP
.050
(1.270)
BSC
.004 – .012
.009 – .013
NOTE 3
(0.102 – 0.305)
(0.229 – 0.330)
.014 – .019
.016 – .050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
1. DIMENSIONS IN
INCHES
(MILLIMETERS)
S28 (WIDE) 0502
2. DRAWING NOT TO SCALE
3. 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
4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
RELATED PARTS
PART NUMBER
LT®1137A
LTC1327
LTC1337
LTC1348
LTC1385
LTC1386
LTC2844
LTC2845
LTC2846
DESCRIPTION
COMMENTS
5V, 3 Driver, 5 Receiver RS232 Transceiver
3.3V, 3 Driver, 5 Receiver RS562 Transceiver
5V, 3 Driver, 5 Receiver RS232 Transceiver
3.3V to 5V, 3 Driver, 5 Receiver RS232 Transceiver
3.3V, 2 Driver, 2 Receiver RS562 Transceiver
3.3V, 2 Driver, 2 Receiver RS562 Transceiver
3.3V, Software-Selectable Multiprotocol Transceiver
3.3V, Software-Selectable Multiprotocol Transceiver
3.3V, Software-Selectable Multiprotocol Transceiver
±15kV ESD per IEC 1000-4
300µA Supply Current, 0.2µA in Shutdown
300µA Supply Current, 1µA in Shutdown
True RS232 on 3.3V, 5 Receivers Active in Shutdown
200µA Supply Current, 2 Receivers Active in Shutdown
200µA Supply Current, Narrow 16-Pin SO
4 Drivers, 4 Receivers for Control Signals Including LL
5 Drivers, 5 Receivers for Control Signals Including LL, RL and TM
4 Drivers, 4 Receivers with Termination for Data/Clock
1350fa
LW/TP 0103 1K REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
8
■
(408) 432-1900 FAX: (408) 434-0507 ■ WWW.linear.com
LINEAR TECHNOLOGY CORPORATION 1993
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