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LT1330CG#TRPBF

P1-P3P4-P6P7-P9P10-P10
LT1330
1
1330fb
TYPICAL APPLICATION
DESCRIPTION
5V RS232 Transceiver with
3V Logic Interface and One
Receiver Active in Shutdown
The LT
®
1330 is a three driver, fi ve receiver RS232 trans-
ceiver with low supply current. Designed to interface
with new 3V logic, the LT1330 operates with both a 5V
power supply and a 3V logic power supply. The chip may
be shut down to micropower operation with one receiver
remaining active to monitor RS232 inputs such as ring
detect from a modem.
The LT1330 is fully compliant with all EIA RS232 spec-
ifi cations. Additionally, the RS232 line input and output pins
are resilient to multiple ±10kV ESD strikes. This eliminates
the need for costly TransZorbs
®
on line pins for the RS232
part.
The LT1330 operates to 120kbaud even driving high
capacitive loads. During shutdown, driver and receiver
outputs are at a high impedance state allowing devices to
be paralleled.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
TransZorb is a registered trademark of General Instrments, GSI.
FEATURES
APPLICATIONS
n
3V Logic Interface
n
ESD Protection over ±10kV
n
Uses Small Capacitors: 0.1μF, 0.2μF, 1.0μF
n
One Low Power Receiver Remains Active While in
Shutdown
n
Pin Compatible with LT1137A and LT1237
n
120kBaud Operation for R
L
= 3k, C
L
= 2500pF
n
250kBaud Operation for R
L
= 3k, C
L
= 1000pF
n
CMOS Comparable Low Power: 30mW
n
Easy PC Layout—Flowthrough Architecture
n
Rugged Bipolar Design
n
Outputs Assume a High Impedance State When Off
or Powered Down
n
Absolutely No Latchup
n
60μA Supply Current in Shutdown
n
Available in SO and SSOP Packages
n
Notebook Computers
n
Palmtop Computers
1330 TA01
5V V
CC
1.0μF
2 s 0.1μF
0.1μF
TO
LINE
LT1330
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DRIVER 1 OUT
RX1 IN
DRIVER 2 OUT
RX2 IN
RX3 IN
RX4 IN
DRIVER 3 OUT
RX5 IN (LOW-Q)
ON/OFF
3V V
L
28
27
26
25
24
23
22
21
20
19
18
17
16
15
2 s 0.1μF
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT (LOW-Q)
GND
DRIVER
DISABLE
RING DETECT IN
SHUTDOWN
CONTROL OUT
μCONTROLLER OR
μPROCESSOR
TO LOGIC
V
–
V
+
1330 TA02
Output Waveforms
RECEIVER
OUTPUT
V
L
= 3V
C
L
= 50pF
DRIVER
OUTPUT
R
L
= 3k
C
L
= 2500pF
INPUT
LT1330
2
1330fb
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
) ..................................................6V
Supply Voltage (V
L
) ....................................................6V
V
+
..........................................................................13.2V
V
–
........................................................................–13.2V
Input Voltage
Driver ............................................................ V
–
to V
+
Receiver .................................................–30V to 30V
Output Voltage
Driver ......................................................– 30V to 30V
Receiver .......................................– 0.3V to V
L
+ 0.3V
Short-Circuit Duration
V
+
.....................................................................30 sec
V
–
.....................................................................30 sec
Driver Output .............................................. Indefi nite
Receiver Output .......................................... Indefi nite
Operating Temperature Range
LT1330C ................................................... 0°C to 70°C
Storage Temperature Range ...................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
+
5V V
CC
C1
+
C1
–
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
(LOW-Q)
ON/OFF
3V V
L
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
(LOW-Q)
GND
DRIVER
DISABLE
NC
NW PACKAGE
28-LEAD (WIDE) PDIP
TOP VIEW
SW PACKAGE
28-LEAD (WIDE) PLASTIC SO
G PACKAGE
28-LEAD PLASTIC SSOP
T
JMAX
= 150°C, θ
JA
= 96°C/W (G)
T
JMAX
=
150°C,
θ
JA
= 56°C/W (NW)
T
JMAX
= 150°C, θ
JA
= 85°C/W (SW)
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply Generator
V
+
Output 7.9 V
V
–
Output –7 V
Supply Current (V
CC
)T
A
= 25°C (Note 3)
l
6
6
12
14
mA
mA
Supply Current (V
L
) (Note 4) 0.1 1 mA
The l denotes the specifi cations which apply over the full operating
temperature range (0°C ≤ T
A
≤ 70°C for commercial grade). (Note 2)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1330CG#PBF LT1330CG#TRPBF LT1330CG 28-Lead Plastic SSOP 0°C to 70°C
LT1330CNW#PBF LT1330CNW#TRPBF LT1330CNW 28-Lead (Wide) PDIP 0°C to 70°C
LT1330CSW#PBF LT1330CSW#PBF LT1330CSW 28-Lead (Wide) Plastic SO 0°C to 70°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
LT1330
3
1330fb
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Current When OFF (V
CC
) Shutdown (Note 5)
Driver Disable
l
0.06
3.00
0.15 mA
mA
Supply Rise Time
Shutdown to Turn-On
C1 = C2 = 0.2μF,
C
+
= 1.0μF, C
–
= 0.1μF
0.2 ms
ON/OFF Pin Thresholds Input Low Level (Device Shutdown)
Input High Level (Device Enabled)
l
l
0.8 1.4
1.4 2.4
V
V
ON/OFF Pin Current 0V ≤ V
ON/OFF
≤ 5V
l
–15 80 μA
DRIVER DISABLE Pin Thresholds Input Low Level (Drivers Enabled)
Input High Level (Drivers Disabled)
l
l
0.8 1.4
1.4 2.4
V
V
DRIVER DISABLE Pin Current 0V ≤ V
DRIVER DISABLE
≤ 5V
l
–10 500 μA
Oscillator Frequency Driver Outputs Loaded R
L
= 3k 130 kHz
Any Driver
Output Voltage Swing Load = 3k to GND Positive
Negative
l
l
57.5
–6.3 –5
V
V
Logic Input Voltage Level Input Low Level (V
OUT
= High)
Input High Level (V
OUT
= Low)
l
l
2
1.4
1.4
0.8
V
V
Logic Input Current 0.8V ≤ V
IN
≤ 2V
l
520 μA
Output Short-Circuit Current V
OUT
= 0V ±9 17 mA
Output Leakage Current Shutdown V
OUT
= ±30V (Note 5)
l
10 100 μA
Data Rate (Note 8) R
L
= 3k, C
L
= 2500pF
R
L
= 3k, C
L
= 1000pF
120
250
kBAUD
kBAUD
Slew Rate R
L
= 3k, C
L
= 51pF
R
L
= 3k, C
L
= 2500pF 4
15
15
30
V/μs
V/μs
Propagation Delay Output Transition t
HL
High to Low (Note 6)
Output Transition t
LH
Low to High
0.6
0.5
1.3
1.3
μs
μs
Any Receiver
Input Voltage Thresholds Input Low Threshold (V
OUT
= High)
Input High Threshold (V
OUT
= Low)
0.8 1.3
1.7 2.4
V
V
Hysteresis
l
0.1 0.4 1 V
Input Resistance V
IN
= ±10V 357 kΩ
Output Leakage Current Shutdown (Note 5) 0 ≤ V
OUT
≤ V
CC
l
110 μA
Receivers 1, 2, 3, 4
Output Voltage Output Low, I
OUT
= –1.6mA
Output High, I
OUT
= 160μA (V
L
= 3V)
l
l
2.7
0.2
2.9
0.4
V
V
Output Short-Circuit Current Sinking Current, V
OUT
= V
CC
Sourcing Current, V
OUT
= 0V
–10
10
–20
20
mA
mA
Propagation Delay Output Transition t
HL
High to Low (Note 7)
Output Transition t
LH
Low to High
250
350
600
600
ns
ns
Receiver 5 (LOW Q-Current RX)
Output Voltage Output Low, I
OUT
= – 500μA
Output High, I
OUT
= 160μA (V
L
= 3V)
l
l
2.7
0.2
2.9
0.4
V
V
Output Short-Circuit Current Sinking Current, V
OUT
= V
CC
Sourcing Current, V
OUT
= 0V
–2
2
–4
4
mA
mA
Propagation Delay Output Transition t
HL
High to Low (Note 7)
Output Transition t
LH
Low to High
1
1
3
3
μs
μs
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range (0°C ≤ T
A
≤ 70°C for commercial grade). (Note 2)
P1-P3P4-P6P7-P9P10-P10

LT1330CG#TRPBF

Mfr. #:
Buy LT1330CG#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
RS-232 Interface IC 5V RS232 Tran w/ 3V Logic Int & One Rcv
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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