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LTC1386IS#TRPBF [Linear]

LTC1386 - 3.3V Low Power EIA/TIA562 Transceiver; Package: SO; Pins: 16; Temperature Range: -40°C to 85°C;
LTC1386IS#TRPBF
型号： LTC1386IS#TRPBF
厂家： Linear    Linear
描述：

LTC1386 - 3.3V Low Power EIA/TIA562 Transceiver; Package: SO; Pins: 16; Temperature Range: -40°C to 85°C

驱动 光电二极管 接口集成电路 驱动器
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LTC1386  
3.3V Low Power  
EIA/TIA562 Transceiver  
U
FEATURES  
DESCRIPTIO  
The LTC®1386 is an ultra-low power 2-driver/2-re-  
ceiver EIA/TIA562 transceiver that operates from a  
single3.3Vsupply. Thechargepumprequiresonlyfour  
space-saving 0.1µF capacitors. The supply current  
■
Operates from a Single 3.3V Supply  
■
Low Supply Current: ICC = 200µA  
■
ESD Protection Over ±10kV  
Available in 16-Pin SOIC Narrow Package  
■
■
Uses Small Capacitors: 0.1µF  
Operates to 120kBaud  
(I ) of the transceiver is only 200µA with driver out-  
CC  
■
puts unloaded.  
■
Output Overvoltage Does Not Force Current  
The LTC1386 is fully compliant with all data rate and  
overvoltageEIA/TIA562specifications.Thetransceiver  
can operate up to 120kbaud with a 1000pF, 3kΩ load.  
Bothdriveroutputsandreceiverinputscanbeforcedto  
±25V without damage and can survive multiple ±10kV  
ESD strikes.  
Back into Supplies  
■
EIA/TIA562 I/O Lines Can Be Forced to ±25V  
Without Damage  
Pin Compatible with LT1181A  
■
U
APPLICATIO S  
■
Notebook Computers  
Palmtop Computers  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Quiescent Supply Current vs Temperature  
600  
1
3
4
5
16  
2
TEST CONDITION: V = 3.3V  
V
= 3.3V  
CC  
CC  
0.1µF  
0.1µF  
500  
400  
300  
200  
100  
0
0.1µF  
LTC1386  
6
0.1µF  
V
V
CC  
CC  
QUIESCENT  
CURRENT  
300k  
11  
14  
LOGIC INPUT  
562 OUTPUT  
300k  
10  
12  
7
LOGIC INPUT  
562 OUTPUT  
562 INPUT  
13  
LOGIC OUTPUT  
5k  
–20  
20  
40  
60  
80  
0
TEMPERATURE (°C)  
9
8
LOGIC OUTPUT  
562 INPUT  
LTC1386 • TA02  
5k  
15  
LTC1386 • TA01  
1386fa  
1
LTC1386  
W W  
U W  
U W  
U
ABSOLUTE AXI U RATI GS  
Supply Voltage (VCC) ................................................ 5V  
Input Voltage  
Driver ....................................... –0.3V to VCC + 0.3V  
Receiver ............................................... – 25V to 25V  
Digital Input............................... –0.3V to VCC + 0.3V  
Output Voltage  
PACKAGE/ORDER I FOR ATIO  
ORDER PART  
NUMBER  
TOP VIEW  
+
+
–
+
–
–
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
C1  
V
V
CC  
GND  
LTC1386CS  
LTC1386IS  
C1  
C2  
C2  
V
TR1 OUT  
RX1 IN  
RX1 OUT  
TR1 IN  
TR2 IN  
RX2 OUT  
Driver .................................................... – 25V to 25V  
Receiver .................................... – 0.3V to VCC + 0.3V  
Short-Circuit Duration  
TR2 OUT  
RX2 IN  
V+ ................................................................... 30 sec  
V– ................................................................... 30 sec  
Driver Output.............................................. Indefinite  
Receiver Output.......................................... Indefinite  
Operating Temperature Range  
S PACKAGE  
16-LEAD PLASTIC SO  
TJMAX = 125°C, θJA = 95°C/W  
LTC1386C ............................................... 0°C to 70°C  
LTC1386I............................................ – 40°C to 85°C  
Storage Temperature Range ................ – 65°C to 150°C  
Lead Temperature (Soldering, 10 sec)................. 300°C  
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 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
V
= V  
= 0V  
■
■
5
–40  
IN  
IN  
CC  
–20  
±10  
Output Short-Circuit Current  
Any Receiver  
V
= 0V  
±9  
mA  
OUT  
Input Voltage Thresholds  
Input Low Threshold  
Input High Threshold  
■
■
0.8  
1.3  
V
V
V
kΩ  
V
V
1.7  
0.4  
5
0.2  
3.2  
2.4  
1
7
Hysteresis  
Input Resistance  
Output Voltage  
■
0.1  
3
–10V ≤ V ≤ 10V  
IN  
Output Low, I  
Output High, I  
= – 1.6mA (V = 3.3V)  
= 160µA (V = 3.3V)  
■
■
0.4  
OUT  
CC  
3.0  
OUT  
CC  
Output Short-Circuit Current  
Sinking Current, V  
Sourcing Current, V  
= V  
–5  
2
–20  
7
mA  
mA  
OUT  
CC  
= GND  
OUT  
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  
Power Supply  
V
Supply Current  
No Load (Note 2), 0°C to 70°C  
No Load (Note 2), – 40°C to 85°C  
■
■
0.2  
0.35  
0.5  
1.0  
mA  
mA  
CC  
1386fa  
2
LTC1386  
AC CHARACTERISTICS  
The ■ denotes specifications which apply over the full operating temperature range.  
V
CC = 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless otherwise 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/TIA562)  
t
t
(Figure 1)  
(Figure 1)  
■
■
2
2
3.5  
3.5  
µs  
µs  
HLD  
LHD  
Receiver Propagation Delay  
(EIA/TIA562 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: Measurements made in the shutdown mode are performed  
with V =OV.  
ON/OFF  
Note 2: Supply current is measured with driver and receiver outputs  
unloaded.  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Driver Output Voltage  
vs Temperature  
Receiver Input Thresholds  
vs Temperature  
Supply Current vs Data Rate  
5
4
2.2  
2.0  
1.8  
1.6  
20  
15  
V
= 3.3V  
CC  
L
L
OUTPUT HIGH  
R
= 3k  
V
= 3.3V  
CC  
C
= 2500pF  
3
ALL DRIVERS ACTIVE  
2
+
1
V
V
TH  
TH  
ALL DRIVERS WITH LOAD  
= 3k  
0
10  
5
R
L
–1  
–2  
–3  
–4  
–5  
1.4  
1.2  
1.0  
–
OUTPUT LOW  
V
= 3.3V  
CC  
0
0
20  
30  
40  
50  
60  
70  
10  
40  
TEMPERATURE (˚C)  
60  
70  
0
20  
40  
60  
80 100 120 140  
0
10  
20  
30  
50  
TEMPERATURE (°C)  
DATA RATE (kBAUD)  
LTC1386 • TPC01  
LTC1386 • TPC02  
LTC1386 • TPC03  
VCC Supply Current  
vs Temperature  
Driver Output Waveforms  
Receiver Output Waveforms  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
DRIVER  
OUTPUT  
RL = 3k  
RECEIVER  
CL = 1000pF  
2 DRIVERS LOADED  
= 3k  
OUTPUT  
R
CL = 51pF  
L
DRIVER  
OUTPUT  
R
L = 3k  
1 DRIVER LOADED  
R
= 3k  
INPUT  
L
INPUT  
LTC1386 • TPC05  
LTC1386 • TPC06  
5µs/DIV  
5µs/DIV  
0
0
10  
20  
30  
70  
40  
50  
60  
TEMPERATURE (°C)  
LTC1386 • TPC04  
1386fa  
3
LTC1386  
U
U
U
PI FU CTIO S  
VCC: 3.3V Input Supply Pin. This pin should be decoupled charge pump efficiency, the capacitor’s effective series  
with a 0.1µF ceramic capacitor.  
resistance should be less than 2Ω.  
GND: Ground Pin.  
TR IN: EIA/TIA562 Driver Input Pins. Inputs are TTL/  
CMOScompatible.Theinputsofunuseddriverscanbeleft  
unconnected since 300k input pull-up resistors to VCC are  
included on chip.  
V+: Positive Supply Output (EIA/TIA562 Drivers). 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 multiple devices, the V + and V– pins TR OUT: Driver Outputs at EIA/TIA562 Voltage Levels.  
may share a common capacitor. For large numbers of The driver outputs are protected against ESD to ±10kV for  
devices,increasingthesizeofthesharedcommonstorage human body model discharges.  
capacitors is recommended to reduce ripple.  
RX IN: Receiver Inputs. These pins can be forced to ±25V  
V–:NegativeSupplyOutput(RS232Drivers).V – ≅– (2VCC withoutdamage. Thereceiverinputsareprotectedagainst  
– 1.3V). This pin requires an external capacitor C = 0.1µF ESD to ±10kV for human body model discharges. Each  
for charge storage.  
receiver provides 0.4V of hysteresis for noise immunity.  
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  
RX OUT: Receiver Outputs with TTL/CMOS Voltage  
Levels.  
U
W
W
SWITCHI G TI E WAVEFOR S  
V
CC  
DRIVER  
INPUT  
1.4V  
1.4V  
0V  
+
V
DRIVER  
OUTPUT  
0V  
0V  
–
V
t
t
LHD  
HLD  
LTC1386 • 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  
LTC1386 • F02  
Figure 2. Receiver Propagation Delay Timing  
1386fa  
4
LTC1386  
TEST CIRCUITS  
Receiver Timing Test Load  
Driver Timing Test Load  
RX  
OUTPUT  
DRIVER  
OUTPUT  
DRIVER  
INPUT  
RX INPUT  
RX  
DRIVER  
51pF  
51pF  
3k  
LTC1386 • TA04  
LTC1386 • TA03  
ESD Test Circuit  
16  
2
1
3
4
5
V
CC  
LTC1386  
0.1µF  
6
0.1µF  
V
CC  
0.1µF  
0.1µF  
300k  
11  
14  
LOGIC INPUT  
562 OUTPUT  
V
CC  
300k  
RS562  
10  
12  
7
562 OUTPUT  
562 INPUT  
LOGIC INPUT  
LINE PINS  
PROTECTED  
TO ±10kV  
13  
LOGIC OUTPUT  
5k  
5k  
9
8
562 INPUT  
LOGIC OUTPUT  
15  
1386 TA05  
1386fa  
5
LTC1386  
U
TYPICAL APPLICATIO S  
Paralleling Power Supply Generator  
with Common Storage Capacitors  
1
16  
2
1
3
4
5
16  
2
V
= 3.3V  
V
= 3.3V  
CC  
CC  
0.1µF  
0.1µF  
0.1µF  
3
LTC1386  
4
LTC1386  
0.1µF  
6
6
0.1µF  
5
0.1µF  
V
V
V
CC  
CC  
CC  
300k  
300k  
300k  
11  
14  
11  
LOGIC INPUT  
562 OUTPUT  
LOGIC INPUT  
562 OUTPUT  
V
CC  
300k  
10  
12  
7
10  
12  
7
LOGIC INPUT  
562 OUTPUT  
562 INPUT  
LOGIC INPUT  
562 OUTPUT  
562 INPUT  
13  
13  
LOGIC OUTPUT  
LOGIC OUTPUT  
5k  
5k  
5k  
9
8
9
LOGIC OUTPUT  
562 INPUT  
LOGIC OUTPUT  
562 INPUT  
5k  
15  
15  
LTC1386 • TA06  
1386fa  
6
LTC1386  
U
PACKAGE DESCRIPTIO  
S Package  
16-Lead Plastic Small Outline (Narrow .150 Inch)  
(Reference LTC DWG # 05-08-1610)  
.386 – .394  
(9.804 – 10.008)  
.045 ±.005  
NOTE 3  
.050 BSC  
N
16  
N
15  
14  
13  
12  
11  
10  
9
.245  
MIN  
.160 ±.005  
.150 – .157  
(3.810 – 3.988)  
NOTE 3  
.228 – .244  
(5.791 – 6.197)  
1
2
3
N/2  
N/2  
8
.030 ±.005  
TYP  
RECOMMENDED SOLDER PAD LAYOUT  
5
7
1
2
3
4
6
.010 – .020  
(0.254 – 0.508)  
× 45°  
.053 – .069  
(1.346 – 1.752)  
.004 – .010  
(0.101 – 0.254)  
.008 – .010  
(0.203 – 0.254)  
0° – 8° TYP  
.050  
(1.270)  
BSC  
.014 – .019  
(0.355 – 0.483)  
TYP  
.016 – .050  
(0.406 – 1.270)  
S16 0502  
NOTE:  
1. DIMENSIONS IN  
INCHES  
(MILLIMETERS)  
2. DRAWING NOT TO SCALE  
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.  
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)  
1386fa  
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
LTC1386  
RELATED PARTS  
PART NUMBER  
LT1780/LT1781  
LTC1327  
DESCRIPTION  
COMMENTS  
5V, 2 Driver, 2 Receiver RS232 Transeivers  
3.3V, 3 Driver, 5 Receiver RS562 Transceiver  
3.3V to 5V, 3 Driver, 5 Receiver RS232 Transceiver  
5V, 2 Driver, 2 Receiver RS232 Transceiver  
5V, 2 Driver, 2 Receiver RS232 Transceiver  
5V, 2 Driver, 2 Receiver RS232 Transceiver  
3.3V, 2 Driver, 2 Receiver RS562 Transceiver  
±15kV ESD per IEC 1000-4  
300µA Supply Current, 0.2µA in Shutdown  
True RS232 on 3.3V, 5 Receivers Active in Shutdown  
220µA Supply Current, 0.2µA in Shutdown  
220µA Supply Current, Narrow 16-pin SO  
220µA Supply Current, 2 Receivers Active in Shutdown  
220µA Supply Current, 2 Receivers Active in Shutdown  
LTC1348  
LTC1382  
LTC1383  
LTC1384  
LTC1385  
1386fa  
LW/TP 1002 1K REV A • PRINTED IN USA  
Linear Technology Corporation  
1630 McCarthy Blvd., Milpitas, CA 95035-7487  
8
■
■
(408) 432-1900 FAX: (408) 434-0507 linear.com  
LINEAR TECHNOLOGY CORPORATION 1994  

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