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LTC1350CG#TRPBF

P1-P3P4-P6P7-P8
1
LTC1350
1350fa
3.3V Low Power
EIA/TIA-562 3-Driver/
5-Receiver Transceiver
■
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
■
Output Overvoltage Does Not Force Current
Back into Supplies
■
EIA/TIA-562 I/O Lines Can Be Forced to ±25V
Without Damage
■
Flowthrough Architecture
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.
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.
T
he LTC1350 is fully compliant with all data rate and
overvoltage EIA/TIA-562 specifications. The transceiver
can operate up to 120kbaud with a 1000pF and 3kΩ load.
Both driver outputs and receiver inputs can be forced to
±25V without damage and can survive multiple ±10kV
ESD strikes.
■
Notebook Computers
■
Palmtop Computers
3-Drivers/5-Receivers with Shutdown
Quiescent and Shutdown Supply Current
vs Temperature
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
+
V
CC
C1
+
C1
–
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
ON/OFF
NC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
–
C2
+
C2
–
DR1 IN
RX1 OUT
DR2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
RX5 OUT
GND
NC
NC
LTC1350
LTC1350 • TA01
TEMPERATURE (˚C)
–40
QUIESCENT CURRENT (µA)
400
500
600
20 60
LTC1350 • TA02
300
200
–20 0
40 80 100
100
0
TEST CONDITION: V
CC
= 3.3V
ALL DRIVER INPUTS TIED TO V
CC
SHUTDOWN CURRENT (µA)
65
75
85
55
45
35
0
QUIESCENT
CURRENT
SHUTDOWN CURRENT
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
2
LTC1350
1350fa
Supply Voltage (V
CC
) ................................................ 5V
Input Voltage
Driver ....................................... –0.3V to V
CC
+ 0.3V
Receiver ............................................... – 25V to 25V
ON/OFF Pin ................................ –0.3V to V
CC
+ 0.3V
Output Voltage
Driver .................................................... – 25V to 25V
Receiver .................................... – 0.3V to V
CC
+ 0.3V
Short-Circuit Duration
V
+
................................................................... 30 sec
V
–
................................................................... 30 sec
Driver Output .............................................. Indefinite
Receiver Output .......................................... Indefinite
Operating Temperature Range
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
The ● denotes specifications which apply over the full operating
temperature range. V
CC
= 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless noted.
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
DC ELECTRICAL CHARACTERISTICS
ORDER PART
NUMBER
LTC1350CG
LTC1350CNW
LTC1350CSW
LTC1350IG
LTC1350INW
LTC1350ISW
T
JMAX
= 125°C, θ
JA
= 96°C/W (G)
T
JMAX
= 125°C, θ
JA
= 56°C/W (NW)
T
JMAX
= 125°C, θ
JA
= 85°C/W (SW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
+
V
CC
C1
+
C1–
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
ON/OFF
NC
V–
C2+
C2–
DR1 IN
RX1 OUT
DR2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
RX5 OUT
GND
NC
NC
NW PACKAGE
28-LEAD PDIP
TOP VIEW
SW PACKAGE
28-LEAD PLASTIC SO WIDE
G PACKAGE
28-LEAD SSOP
Consult LTC Marketing for parts specified with wider operating temperature
ranges.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Any Driver
Output Voltage Swing 3k to GND Positive ● 3.7 4.5 V
Negative ● –3.7 – 4.5 V
Logic Input Voltage Level Input Low Level (V
OUT
= High) ● 1.4 0.8 V
Input High Level (V
OUT
= Low) ● 2.0 1.4 V
Logic Input Current V
IN
= V
CC
● 5 µA
V
IN
= 0V ● –5 µA
Output Short-Circuit Current V
OUT
= 0V ±9 ±10 mA
Output Leakage Current Shutdown (Note 3), V
OUT
= ±20V 10 500 µA
Any Receiver
Input Voltage Thresholds Input Low Threshold ● 0.8 1.3 V
Input High Threshold ● 1.7 2.4 V
Hysteresis ● 0.1 0.4 1 V
Input Resistance V
IN
= ±10V 3 5 7 kΩ
Output Voltage Output Low, I
OUT
= – 1.6mA (V
CC
= 3.3V) ● 0.2 0.4 V
Output High, I
OUT
= 160µA (V
CC
= 3.3V) ● 3.0 3.2 V
Output Short-Circuit Current Sinking Current, V
OUT
= V
CC
–3 –20 mA
Output Leakage Current Shutdown (Note 3), 0V ≤ V
OUT
≤ V
CC
● 110 µA
3
LTC1350
1350fa
The ● denotes specifications which apply over the full operating
temperature range. V
CC
= 3.3V, C1 = C2 = C3 = C4 = 0.1µF, unless noted.
The ● denotes specifications which apply over the full operating temperature range.
V
CC
= 5V, C1 = C2 = C3 = C4 = 0.1µF, unless noted.
Note 3: Supply current measurement in Shutdown mode is performed
with V
ON/OFF
= 0V.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Slew Rate R
L
= 3k, C
L
= 51pF 8 30 V/µs
R
L
= 3k, C
L
= 1000pF 3 5 V/µs
Driver Propagation Delay t
HLD
(Figure 1) ● 2 3.5 µs
(TTL to EIA/TIA-562) t
LHD
(Figure 1) ● 2 3.5 µs
Receiver Propagation Delay t
HLR
(Figure 2) ● 0.3 0.8 µs
(EIA/TIA-562 to TTL) t
LHR
(Figure 2) ● 0.3 0.8 µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Supply current is measured with driver and receiver outputs
unloaded.
DC ELECTRICAL CHARACTERISTICS
AC CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply Generator
V
+
Output Voltage I
OUT
= 0mA 5.7 V
I
OUT
= 5mA 5.5 V
V
–
Output Voltage I
OUT
= 0mA –5.3 V
I
OUT
= –5mA –5.0 V
Supply Rise Time Shutdown to Turn-On 0.2 ms
Power Supply
V
CC
Supply Current No Load (All Drivers V
IN
= V
CC
)(Note 2) 0°C ≤ T
A
≤ 70°C ● 0.3 0.6 mA
No Load (All Drivers V
IN
= 0)(Note 2) 0°C ≤ T
A
≤ 70°C ● 0.5 1.0 mA
No Load (All Drivers V
IN
= V
CC
)(Note 2) 0°C ≤ T
A
≤ 85°C ● 0.3 1.0 mA
No Load (All Drivers V
IN
= V
CC
)(Note 2) –40°C ≤ T
A
≤ 0°C ● 0.3 1.5 mA
No Load (All Drivers V
IN
= 0)(Note 2) –40°C ≤ T
A
≤ 85°C ● 0.5 1.5 mA
Shutdown (Note 3) ● 35 50 µA
ON/OFF Threshold Low ● 1.4 0.8 V
ON/OFF Threshold High ● 2.0 1.4 V
P1-P3P4-P6P7-P8

LTC1350CG#TRPBF

Mfr. #:
Buy LTC1350CG#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
RS-232 Interface IC 3V L/P EIA562 3Dx/5Rx w/2Rx Active
Lifecycle:
New from this manufacturer.
Delivery:
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