LTC1349CG Linear Technology, LTC1349CG Datasheet - Page 3

• Manufacturer Part Number: LTC1349CG
• Description: IC TXRX 5V RS232 LOW PWR 28-SSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC1349CG

• Number Of Drivers/receivers: 3/5
• Protocol: RS232
• Voltage - Supply: 4.5 V ~ 5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DC ELECTRICAL CHARACTERISTICS
AC CHARACTERISTICS
temperature range. V
PARAMETER
Power Supply
V
Supply Leakage Current (V
On/Off Threshold Low
On/Off Threshold High
V
PARAMETER
Slew Rate
Driver Propagation Delay
(TTL to RS232)
Receiver Propagation Delay
(RS232 to TTL)
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.
TYPICAL PERFOR A CE CHARACTERISTICS
CC
CC
–4
10
–2
–6
–8
Supply Current
4
2
0
8
6
= 5V, C1 = C2 = C3 = C4 = 0.1µF, unless noted.
–40
Driver Output Voltage
R
L
–20
= 3k
0
TEMPERATURE (°C)
20
OUTPUT HIGH
OUTPUT LOW
CC
V
V
V
V
CC
CC
CC
CC
CC
= 5V, C1 = C2 = C3 = C4 = 0.1µF, unless noted.
40
= 4.5V
= 4.5V
)
= 5V
= 5V
60
LTC1349 • TPC01
W
80
CONDITIONS
No Load (All Drivers V
No Load (All Drivers V
No Load (All Drivers V
No Load (All Drivers V
No Load (All Drivers V
Shutdown (Note 3)
U
100
The
CONDITIONS
R
R
t
t
t
t
HLD
LHD
HLR
LHR
L
L
= 3k, C
= 3k, C
(Figure 1)
(Figure 1)
(Figure 2)
(Figure 2)
denotes specifications which apply over the full operating temperature range.
2.2
2.0
1.8
1.6
1.4
1.2
1.0
–40
L
L
Receiver Input Thresholds
= 51pF
= 2500pF
–20
IN
IN
IN
IN
IN
= V
= 0V)(Note 2), 0°C ≤ T
= V
= V
= 0V)(Note 2), – 40°C ≤ T
CC
CC
CC
0
TEMPERATURE (˚C)
V
)(Note 2), 0°C ≤ T
)(Note 2), 0°C ≤ T
)(Note 2), – 40°C ≤ T
TH
The
20
Note 3: Supply current and leakage current measurements in Shutdown
are performed with V
40
denotes specifications which apply over the full operating
60
V
A
LTC1349 • TPC02
TL
A
A
≤ 70°C
≤ 70°C
≤ 85°C
A
80
A
≤ 85°C
≤ 0°C
100
ON/OFF
= 0V.
45
40
35
30
25
20
15
10
5
0
0
Supply Current vs Data Rate
MIN
MIN
2.0
V
R
C
3 DRIVERS ACTIVE
3
CC
L
L
25
= 2500pF
= 3k
= 5V
50
DATA RATE (k BAUD)
TYP
TYP
0.3
0.5
0.3
0.3
0.5
1.4
1.4
0.3
0.2
35
8
5
2
2
75
LTC1349
100
MAX
MAX
0.8
1.0
1.0
1.5
1.5
0.8
3.5
3.5
0.8
0.8
50
30
125
LTC1349 • TPC03
150
UNITS
UNITS
1349fa
3
V/µs
V/µs
mA
mA
mA
mA
mA
175
µA
µs
µs
µs
µs
V
V