LTC1327 [Linear]
3.3V Micropower EIA/TIA-562 Transceiver; 3.3V微EIA / TIA- 562收发器
| 型号： | LTC1327 |
| 厂家： | 
Linear |
| 描述： | 3.3V Micropower EIA/TIA-562 Transceiver |
| 文件： | 总8页 (文件大小：225K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC1327
3.3V Micropower EIA/TIA-562
Transceiver
U
DESCRIPTIO
EATURE
S
F
■
■
■
■
■
■
■
■
The LTC1327 is an advanced low power, three-driver/five-
receiver EIA/TIA-562 transceiver. In the no load condition,
the supply current is only 300µA. The charge pump only
requires four 0.1µF capacitors.
Low Supply Current
300µA
±10kV
0.1µF
0.2µA Supply Current in SHUTDOWN
ESD Protection
Operates From a Single 3.3V Supply
Uses Small Capacitors
In SHUTDOWN mode, the supply current is further re-
duced to 0.2µA. All EIA/TIA-562 outputs assume a high
impedance state in SHUTDOWN and with the power off.
Operates To 120k Baud
Three-State Outputs are High Impedance When Off
Output Overvoltage Does Not Force Current Back
Into Supplies
The LTC1327 is fully compliant with all data rate and
overvoltage EIA/TIA-562 specifications. The transceiver
can operate up to 120k Baud with a 1000pF//3kΩ load.
Both driver outputs and receiver inputs can be forced to
±25V without damage, and can survive multiple ±10kV
ESD strikes.
■
■
EIA/TIA-562 I/O Lines Can Be Forced to ±25V
Without Damage
Flowthrough Architecture
O U
PPLICATI
A
S
■
Notebook Computers
Palmtop Computers
■
U
O
TYPICAL APPLICATI
3-Drivers/5-Receivers with SHUTDOWN
Supply Current vs Temperature
600
500
400
300
200
100
0
1.2
1.0
0.8
0.6
0.4
0.2
–
+
V
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
V
V
= 3.3V
CC
LTC1327
C1
0.1µF
ALL DRIVERS INPUTS TIED TO V
C4
0.1µF
CC
CC
C3
0.1µF
3
C2
0.1µF
4
DR1 IN
QUIESCENT
CURRENT
5
DR1 OUT
RX1 IN
RX1 OUT
DR2 IN
6
7
DR2 OUT
RX2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
SHUTDOWN
CURRENT
8
9
RX3 IN
10
11
12
13
14
RX4 IN
DR4 OUT
RX5 IN
RX5 OUT
GND
–20
20
40
60
80
0
TEMPERATURE (°C)
ON/OFF
LTC1327 • TA02
1327 TA01
1
LTC1327
W W W
U
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
26 C2
CC
+
C1
C1
LTC1327CG
LTC1327CN
LTC1327CS
–
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
16 NC
NC
14
15 NC
G PACKAGE
28-LEAD SSOP
N PACKAGE
28-LEAD PLASTIC DIP
Commercial LTC1327C .......................... 0°C to 70°C
Storage Temperature Range ................. –65°c to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
S PACKAGE
28-LEAD PLASTIC SOL
TJMAX = 125°C, θJA = 96°C/W (G)
TJMAX = 125°C, θJA = 56°C/W (N)
JMAX = 125°C, θJA = 85°C/W (S)
T
Consult factory for Industrial and Military grade parts.
DC ELECTRICAL CHARACTERISTICS VCC = 3.3V, C1 to C4 = 0.1µF, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Any Driver
Output Voltage Swing
Positive
Negative (3k to GND)
●
●
3.7
–3.7
4.5
–4.5
V
V
Logic Input Voltage Level
Logic Input Current
Input Low Level (V
= High)
= Low)
●
●
1.4
1.4
0.8
V
V
OUT
OUT
Input High Level (V
2
V
IN
V
IN
= 3.3
= 0
●
●
5
–5
µA
µA
Output Short-Circuit Current
Output Leakage Current
Any Receiver
V
= 0V
±7
mA
OUT
SHUTDOWN (Note 3), V
= ±20V
±10
±500
µA
OUT
Input Voltage Thresholds
Input Low Threshold
Input High Threshold
●
●
0.8
1.3
1.7
V
V
2.4
1
Hysteresis
●
0.1
3
0.4
5
V
Input Resistance
Output Voltage
V
IN
= ±10V
7
kΩ
Output Low, I
= –1.6mA (V = 3.3V)
= 160µA (V = 3.3V)
●
●
0.2
3.2
0.4
V
V
OUT
OUT
CC
CC
Output High, I
3
Output Short-Circuit Current
Output Leakage Current
Sinking Current, V
= V
–2
–10
1
mA
OUT
CC
SHUTDOWN (Note 3), 0 ≤ V
≤ V
●
10
µA
OUT
CC
2
LTC1327
DC ELECTRICAL CHARACTERISTICS VCC = 3.3V, C1 to C4 = 0.1µF, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply Generator
+
V Output Voltage
I
I
= 0mA
= 5mA
5.7
5.5
V
V
OUT
OUT
–
V Output Voltage
I
I
= 0mA
= –5mA
–5.3
–5.0
V
V
OUT
OUT
Supply Rise Time
SHUTDOWN to Turn-On
0.2
ms
Power Supply
V
Supply Current
No Load (Note 2)
●
●
●
●
0.3
0.2
1.4
1.4
0.5
10
mA
µA
V
CC
Supply Leakage Current (V
On/Off Threshold Low
On/Off Threshold High
)
SHUTDOWN (Note 3)
CC
0.8
2
3
V
AC CHARACTERISTICS
Slew Rate
R = 3k, C = 51pF
6
5
30
V/µs
V/µs
L
L
R = 3k, C = 1000pF
L
L
Driver Propagation Delay
(TTL to EIA/TIA-562)
t
t
●
●
2
2
3.5
3.5
µs
µs
HLD
LHD
Receiver Propagation Delay
(EIA/TIA-562 to TTL)
t
t
●
●
0.3
0.2
0.8
0.8
µs
µs
HLR
LHR
The
●
denotes specifications which apply over the operating temperature
A
Note 2: Supply current is measured with driver and receiver output
unloaded and driver inputs tied high.
(0°C ≤ T ≤ 70°C).
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
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Driver Output Voltage vs
Temperature
Receiver Input Thresholds vs
Temperature
Supply Current vs Data Rate
5
4
45
40
35
30
25
20
15
10
5
2.2
2.0
1.8
1.6
1.4
1.2
1.0
V
= 3.3V
CC
R
= 3k
L
L
V
= 3.3V
CC
OUTPUT HIGH
C
= 1000pF
3
3 DRIVERS ACTIVE
2
+
V
TH
1
ALL DRIVERS WITH LOAD R = 3k
L
0
–1
–2
–3
–4
–5
–
V
TH
V
= 3.3V
CC
OUTPUT LOW
0
0
20
30
40
50
60
70
10
0
30
40
TEMPERATURE (°C)
50
60
70
10
20
0
20
40
60
80 100 120 140
TEMPERATURE (°C)
DATA RATE (k BAUD)
1327 G01
1327 G02
1327 G03
3
LTC1327
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Driver Leakage in SHUTDOWN
vs Temperature
Driver Short-Circuit Current vs
Supply Voltage
VCC Supply Current vs Data Rate
45
40
35
30
25
20
15
10
5
45
40
35
30
25
20
15
10
5
14
12
10
8
V
= 3.3V
CC
R
= 3k
L
L
C
= 1000pF
3 DRIVERS ACTIVE
–
I
I
SC
SC
V
= –20V
OUT
6
+
4
V
= 20V
50
OUT
40
2
0
0
0
30
0
10
20
30
40
SUPPLY VOLTAGE (V)
50
60
70
0
10
20
60
70
0
20
40
60
80 100 120 140
TEMPERATURE (°C)
DATA RATE (k BAUD)
1327 G06
1327 G05
1327 G03
Receiver Short-Circuit Current
vs Temperature
Driver Output Waveform
Receiver Output Waveform
40
35
30
25
20
15
10
5
DRIVER
OUTPUT
R
L = 3k
RECEIVER
OUTPUT
C
L = 50pF
DRIVER
OUTPUT
–
R
L = 3k
I
SC
C
L = 1000pF
INPUT
INPUT
+
I
SC
1327 G08
1327 G09
0
0
10
20
30
40
50
60
70
TEMPERATURE (°C)
1327 G07
U
U
U
PI FU CTIO S
VCC: 3.3V Input Supply Pin. Supply current 0.2µA in the
SHUTDOWN mode. This pin should be decoupled with a
0.1µF ceramic capacitor.
C = 0.1µF for charge storage. The capacitor may be tied to
ground or 3.3V. With multiple devices, the V+ and V– pins
may be paralleled into common capacitors. For large
numbers of devices, increasing the size of the shared
common storage capacitors is recommended to reduce
ripple.
V–: Negative Supply Output (EIA/TIA-562 Drivers).
V– –(2VCC –1.3). Thispinrequiresanexternalcapacitor
C = 0.1µF for a charge storage.
GND: Ground Pin.
ON/OFF: TTL/CMOS Compatible Shutdown Pin. A logic
low puts the device in SHUTDOWN mode which reduces
the supply current to 0.2µA and places all drivers and
receivers in high impedance state. This pin cannot float.
V+: Positive Supply Output (EIA/TIA-562 Drivers).
V+ 2VCC – 1V. This pin requires an external capacitor
4
LTC1327
U
U
U
PI FU CTIO S
C1+, C1–, C2+, C2–: Commutating Capacitor Inputs.
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.
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.
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.
RX OUT: Receiver Outputs With TTL/CMOS Voltage Lev-
els. Outputs are in a high impedance state when in SHUT-
DOWN mode to allow data line sharing.
DR OUT: Driver Outputs at EIA/TIA-562 Voltage Levels.
Outputs are in a high impedance state when in SHUT-
TEST CIRCUITS
Driver Timing Test Load
ESD Test Circuit
–
+
V
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DRIVER
V
OUTPUT
DRIVER
DR
LTC1327
C1
0.1µF
C4
0.1µF
V
CC
INPUT
C3
3
0.1µF
51pF
3k
C2
0.1µF
4
DR1 IN
5
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
ON/OFF
NC
RX1 OUT
DR2 IN
6
1327 TC02
7
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
EIA/TIA 562
LINE PINS
PROTECTED
TO ±10kV
8
9
Receiver Timing Test Load
10
11
12
13
14
RX5 OUT
GND
RX
OUTPUT
RX IN
RX
LT1327 • TC01
51pF
1327 TC03
5
LTC1327
U
W
W
SWITCHI G TI E WAVEFOR S
Driver Propagation Delay Timing
V
CC
DR INPUT
1.4V
1.4V
0V
+
V
DR OUTPUT
0V
0V
–
V
t
t
LHD
HLD
1327 WF01
Receiver Propagation Delay Timing
V
CC
1.7V
RX INPUT
1.3V
0V
V
CC
RX OUTPUT
0V
0.8V
0V
t
t
LHR
HLR
1327 WF02
O U
W
U
PPLICATI
A
S I FOR ATIO
The LTC1327 is compatible with RS232 parts. This table
shows some devices and the receiver input thresholds.
INPUT HIGH THRESHOLD
INPUT LOW THRESHOLD
(V )
(V )
IH
IL
MANUFACTURER
PART NUMBER
LT1080
COMPATIBLE
MIN
0.8
TYP
1.3
1.3
1.3
1.3
MAX
MIN
TYP
1.7
1.7
1.7
1.7
MAX
2.4
Linear Technology
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
–
–
–
–
–
–
–
–
LT1137A
LT1330
0.8
2.4
0.8
2.4
LT1281
0.8
2.4
All Others
SN75189
SN75189A
MAX232
SN75C185
MAX232A
MAX241
SP232
Texas Instruments
0.65
0.65
0.8
1
1
1.25
1.25
–
0.9
1.55
–
1.3
1.9
1.7
2.1
1.8
1.5
1.7
2.5
–
1.6
2.25
2.4
1.2
1
0.65
0.8
1.25
–
1.6
–
2.55
2.4
Maxim
Sipex
1.3
1.2
1.2
–
0.6
–
–
2.4
0.8
–
–
2.4
SP301
0.75
0.75
0.75
0.75
0.5
1.35
1.25
1.25
1.25
1.9
1.75
1
Motorola
National
MC1489
–
1.5
2.25
1.5
MC1489A
DS1489
0.8
1
1.75
1
1.95
1.25
–
DS14C89A
–
1.3
2.7
6
LTC1327
U
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTIO
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
(0.55 – 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
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
LTC1327
U.S. Area Sales Offices
SOUTHWEST REGION
Linear Technology Corporation
22141 Ventura Blvd.
SOUTHEAST REGION
Linear Technology Corporation
17060 Dallas Parkway
Suite 208
Dallas, TX 75248
Phone: (214) 733-3071
FAX: (214) 380-5138
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
NORTHWEST REGION
Linear Technology Corporation
782 Sycamore Dr.
CENTRAL REGION
Linear Technology Corporation
Chesapeake Square
Linear Technology Corporation
266 Lowell St., Suite B-8
Wilmington, MA 01887
Milpitas, CA 95035
Phone: (408) 428-2050
FAX: (408) 432-6331
229 Mitchell Court, Suite A-25
Addison, IL 60101
Phone: (708) 620-6910
FAX: (708) 620-6977
Phone: (508) 658-3881
FAX: (508) 658-2701
International Sales Offices
FRANCE
KOREA
TAIWAN
Linear Technology S.A.R.L.
Immeuble "Le Quartz"
58 Chemin de la Justice
92290 Chatenay Malabry
France
Linear Technology Korea Branch
Namsong Building, #505
Itaewon-Dong 260-199
Yongsan-Ku, Seoul
Korea
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: 33-1-41079555
FAX: 33-1-46314613
Phone: 82-2-792-1617
FAX: 82-2-792-1619
UNITED KINGDOM
GERMANY
SINGAPORE
Linear Technology (UK) Ltd.
The Coliseum, Riverside Way
Camberley, Surrey GU15 3YL
United Kingdom
Phone: 44-276-677676
FAX: 44-276-64851
Linear Techonolgy GMBH
Untere Hauptstr. 9
D-85386 Eching
Germany
Phone: 49-89-3197410
FAX: 49-89-3194821
Linear Technology Pte. Ltd.
101 Boon Keng Road
#02-15 Kallang Ind. Estates
Singapore 1233
Phone: 65-293-5322
FAX: 65-292-0398
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
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：
LTC1327CG#TRPBF
LTC1327 - 3.3V Micropower EIA/TIA-562 Transceiver; Package: SSOP; Pins: 28; Temperature Range: 0°C to 70°C
Linear
LTC1327CNW
LTC1327 - 3.3V Micropower EIA/TIA-562 Transceiver; Package: PDIP; Pins: 28; Temperature Range: 0°C to 70°C
Linear
©2020 ICPDF网 联系我们和版权申明