LT1237CG Linear Technology, LT1237CG Datasheet - Page 3

• Manufacturer Part Number: LT1237CG
• Description: IC TXRX 5V RS232 ADV LOPWR28SSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LT1237CG

• Number Of Drivers/receivers: 3/5
• Protocol: RS232
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

temperature range, otherwise specifications are at T
PARAMETER
Any Driver
Output Voltage Swing
Logic Input Voltage Level
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Data Rate (Note 7)
Slew Rate
Propagation Delay
Any Receiver
Input Voltage Thresholds
Hysteresis
Input Resistance
Output Leakage Current
Receivers 1, 2, 3, 4
Output Voltage
Output Short-Circuit Current
Propagation Delay
Receiver 5 (LOW I
Output Voltage
Output Short-Circuit Current
Propagation Delay
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Testing done at V
specified.
Note 3: Supply current is measured as the average over several charge
pump burst cycles. C
are open, with all driver inputs tied high.
Note 4: Measurements in shutdown are performed with V
Supply current measurements using driver disable are performed with
V
ELECTRICAL C
DRIVER DISABLE
3V.
SUPPLY
+
= 1.0 F, C
CC
RX)
= 5V and V
HARA TERISTICS
–
= 0.1 F, C1 = C2 = 0.2 F. All outputs
ON/OFF
C
CONDITIONS
Load = 3k to GND
Input Low Level (V
Input High Level (V
0.8V V
V
Shutdown V
R
R
R
R
Output Transition t
Output Transition t
Input Low Threshold (V
Input High Threshold (V
V
Shutdown (Note 4) 0 V
Output Low, I
Output High, I
Sinking Current, V
Sourcing Current, V
Output Transition t
Output Transition t
Output Low, I
Output High, I
Sinking Current, V
Sourcing Current, V
Output Transition t
Output Transition t
OUT
L
L
L
L
IN
= 3k, C
= 3k, C
= 3k, C
= 3k, C
= 3V, unless otherwise
= 10V
= 0V
IN
L
L
L
L
= 2500pF
= 1000pF
= 51pF
= 2500pF
OUT
2V
OUT
OUT
OUT
OUT
ON/OFF
= 30V (Note 4)
A
= – 1.6mA
= – 500 A
= 160 A (V
= 160 A (V
OUT
OUT
HL
LH
HL
LH
HL
LH
OUT
OUT
= 25 C. (Note 2)
OUT
OUT
High to Low (Note 5)
Low to High
High to Low (Note 6)
Low to High
High to Low (Note 6)
Low to High
= V
= V
= High)
= Low)
OUT
0.1V.
= 0V
= 0V
OUT
The
OUT
CC
CC
= High)
= Low)
CC
CC
V
= 5V)
= 5V)
denotes specifications which apply over the full operating
CC
Note 5: For driver delay measurements, R
points are set between the driver’s input logic threshold and the output
transition to the zero crossing (t
Note 6: For receiver delay measurements, C
set between the receiver’s input logic threshold and the output transition
to standard TTL/CMOS logic threshold (t
to 0.8V).
Note 7: Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
Positive
Negative
HL
= 1.4V to 0V and t
MIN
– 10
120
250
2.0
0.8
0.1
3.5
3.5
– 2
5.0
4
3
10
9
2
HL
L
= 3k and C
= 1.3V to 2.4V and t
L
= 51pF. Trigger points are
– 6.3
TYP
– 20
250
350
1.4
1.4
0.6
0.5
1.3
1.7
0.4
0.2
4.2
0.2
4.2
1.0
0.6
– 4
17
10
15
7.5
5
7
5
1
20
4
LH
L
= 51pF. Trigger
= 1.4V to 0V).
MAX
– 5.0
100
600
600
0.8
1.3
1.3
2.4
1.0
0.4
0.4
20
30
10
7
3
3
LT1237
LH
= 1.7V
UNITS
kBaud
kBaud
3
V/ s
V/ s
mA
mA
mA
mA
mA
k
ns
ns
V
V
V
V
A
A
V
V
V
A
V
V
V
V
s
s
s
s