LTC1347 Linear Technology, LTC1347 Datasheet - Page 3

• Manufacturer Part Number: LTC1347
• Description: 5V Low Power RS232 3-Driver/5-Receiver Transceiver with 5 Receivers Active in Shutdown
• Manufacturer: Linear Technology

D
AC
The
range (0 C T
Note 1: Absolute maximum ratings are those values beyond which the life
of the device may be impaired.
TYPICAL PERFORMANCE CHARACTERISTICS
PARAMETER
Power Supply Generator
V
V
Supply Rise Time
Power Supply
V
On/Off Threshold Low
On/Off Threshold High
PARAMETER
Slew Rate
Driver Propagation Delay
(TTL to RS232)
Receiver Propagation Delay
(RS232 to TTL)
CC
+
–
C
Output Voltage
Output Voltage
–2
–4
–8
10
–6
Supply Current
4
2
0
8
6
–40
denotes specifications which apply over the operating temperature
Driver Output Voltage
ELECTRICAL C
C
R
HARA TERISTICS
L
–20
= 3k
A
0
TEMPERATURE (°C)
70 C for commercial grade.
C
20
OUTPUT HIGH
OUTPUT LOW
V
V
V
V
CC
CC
CC
CC
40
= 4.5V
= 4.5V
= 5V
= 5V
60
W
HARA TERISTICS
80
1347 G01
CONDITIONS
I
I
I
I
Shutdown to Turn-On
No Load (All Drivers V
No Load (All Drivers V
Shutdown (Note 3)
CONDITIONS
R
R
t
t
t
t
OUT
OUT
OUT
OUT
HLD
LHD
HLR
LHR
U
L
L
100
= 3k, C
= 3k, C
V
= 0mA
= 12mA
= 0mA
= – 12mA
(Figure 1)
(Figure 1)
(Figure 2)
(Figure 2)
CC
C
= 5V, C1 = C2 = C3 = C4 = 0.1 F, unless otherwise noted.
L
L
= 51pF
= 2500pF
2.2
2.0
1.8
1.6
1.4
1.2
1.0
–40
Receiver Input Thresholds
–20
IN
IN
= 5V)(Note 2)
= 0V) (Note 2)
0
TEMPERATURE (˚C)
V
TH
V
CC
20
= 5V, C1 = C2 = C3 = C4 = 0.1 F, unless otherwise noted.
Note 2: Supply current is measured with driver and receiver outputs
unloaded.
Note 3: Supply current and leakage current measurements in Shutdown
are performed with V
40
60
V
TL
80
1347 G02
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 (kBAUD)
– 8.0
– 7.0
80.0
TYP
TYP
8.0
7.5
0.2
1.4
1.4
0.3
0.2
0.6
0.8
8
5
2
2
75
LTC1347
120.0
100
MAX
MAX
0.8
3.5
3.5
0.8
0.8
1.1
1.3
30
125
150
UNITS
UNITS
1347 G03
3
V/ s
V/ s
mA
mA
ms
175
V
V
V
V
A
V
V
s
s
s
s