LTC1338 Linear Technology, LTC1338 Datasheet - Page 3

• Manufacturer Part Number: LTC1338
• Description: 5V Low Power RS232 5-Driver/3-Receiver Transceiver
• Manufacturer: Linear Technology

AC
D
TYPICAL PERFOR A CE CHARACTERISTICS
PARAMETER
Power Supply
V
Supply Leakage Current (V
Driver/Receiver Enable Threshold Low
Driver/Receiver Enable Threshold High
PARAMETER
Slew Rate
Driver Propagation Delay
(TTL to RS232)
Receiver Propagation Delay
(RS232 to TTL)
The
range of 0 C to 70 C or – 40 C to 85 C.
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. The V
CC
C
–4
–2
–8
10
–6
Supply Current
6
4
2
0
8
–40
denotes specifications which apply over the operating temperature
Driver Output Voltage
ELECTRICAL C
C
R
HARA TERISTICS
L
–20
= 3k
DRIVER ENABLE
0
TEMPERATURE (°C)
C
20
CC
40
)
OUTPUT HIGH
OUTPUT LOW
and V
V
V
V
V
CC
CC
CC
CC
60
= 4.5V
= 4.5V
= 5V
= 5V
RECEIVER ENABLE
LTC1338 • TPC01
HARA TERISTICS
W U
80
100
CONDITIONS
No Load (All Driver V
No Load (All Driver V
No Load (All Driver V
No Load (All Driver V
RECEIVER ALIVE Mode (Note 4)
SHUTDOWN (Note 3)
CONDITIONS
R
R
t
t
t
t
HLD
LHD
HLR
LHR
L
L
V
C
= 3k, C
= 3k, C
CC
(Figure 2)
(Figure 1)
(Figure 1)
(Figure 2)
= V
= 5V, C1 = C2 = C3 = C4 = 0.1 F, unless otherwise noted.
CC
1.0
L
L
2.2
2.0
1.8
1.6
1.4
1.2
.
= 51pF
= 2500pF
–40
Receiver Input Thresholds
–20
IN
IN
IN
IN
= V
= 0V)(Note 2) 0 C T
= V
= 0V)(Note 2) – 40 C T
0
TEMPERATURE (˚C)
V
CC
CC
TH
V
)(Note 2) 0 C T
)(Note 2) – 40 C T
CC
20
V
= 5V, C1 = C2 = C3 = C4 = 0.1 F, unless otherwise noted.
TL
Note 3: Supply current and leakage current measurements in SHUTDOWN
are performed with V
Note 4: Supply current measurement in RECEIVER ALIVE mode is
performed with V
40
60
LTC1338 • TPC02
A
80
A
A
70 C
A
70 C
DRIVER ENABLE
100
85 C
85 C
DRIVER ENABLE
60
50
20
40
30
10
= 0V and V
0
0
Supply Current vs Data Rate
MIN
MIN
and V
V
R
C
5 DRIVERS ACTIVE
2.0
CC
L
L
3
= 2500pF
= 3k
20
= 5V
RECEIVER ENABLE
RECEIVER ENABLE
40
DATA RATE (k BAUD)
TYP
TYP
0.5
1.0
0.5
1.0
0.2
1.4
1.4
0.3
0.2
50
8
5
2
2
60
LTC1338
80
MAX
MAX
1.0
1.5
1.5
2.0
0.8
3.5
3.5
0.8
0.8
= 0V.
80
10
30
= V
100
CC
LTC1338 • TPC03
.
120
UNITS
UNITS
3
V/ s
V/ s
mA
mA
mA
mA
140
A
A
V
V
s
s
s
s