LT1280ACSW#PBF Linear Technology, LT1280ACSW#PBF Datasheet - Page 3

• Manufacturer Part Number: LT1280ACSW#PBF
• Description: IC DRVR/RCVR 5V RS232 DUAL18SOIC
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LT1280ACSW#PBF

• Number Of Drivers/receivers: 2/2
• Protocol: RS232
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 18-SOIC (7.5mm Width)
• Data Rate: 250Kbps
• Interface Circuit Standard 1: EIA-232/RS-232
• Number Of Receivers: 2
• Number Of Transmitters: 2
• Number Of Transceivers: 2
• Data Transmission Topology: Point-to-Point
• Receiver Signal Type: Single-Ended
• Transmitter Signal Type: Single-Ended
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Supply Current: 10mA
• Power Supply Requirement: Single
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 18
• Package Type: SOIC W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL PERFOR
PARAMETER
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Data Rate (Note 7)
Slew Rate
Propagation Delay
Receiver
Input Voltage Thresholds
Hysteresis
Input Resistance
Output Leakage Current
Output Voltage
Output Short-Circuit Current
Propagation Delay
The
range (0 C T
industrial grade.
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 cycles. C
driver inputs tied high.
ELECTRICAL C
8.0
7.5
7.0
6.5
6.0
5.5
5.0
denotes specifications which apply over the operating temperature
0
Driver Maximum Output Voltage
vs Load Capacitance
1
2
A
+
LOAD CAPACITANCE (nF)
= C
3
70 C for commercial grade, and – 40 C T
–
4
= C1 = C2 = 0.1 F. All outputs are open, with all
CC
5
20k BAUD
60k BAUD
120k BAUD
= 5V and V
HARA TERISTICS
6
7
W
8
LT1280A • TPC01
ON/OFF
A
C
9
CONDITIONS
0.8V V
V
Shutdown V
R
R
R
R
Output Transition t
Output Transition t
Input Low Threshold (V
Input High Threshold (V
Input Low
Input High
V
Shutdown (Note 4) 0 V
Output Low, I
Output High, I
Sinking Current, V
Sourcing Current, V
Output Transition t
Output Transition t
OUT
L
L
L
L
IN
U
10
= 3k, C
= 3k, C
= 3k, C
= 3k, C
= 3V, unless otherwise
= 10V
CE
= 0V
IN
L
L
L
L
C
= 2500pF
= 1000pF
= 51pF
= 2500pF
OUT
2.0V
–4.0
–4.5
–5.0
–5.5
–6.0
–6.5
–7.0
OUT
HARA TERISTICS
OUT
= 30V (Note 4)
= – 1.6mA
0
= 160 A (V
Driver Minimum Output Voltage
vs Load Capacitance
OUT
HL
LH
HL
LH
A
OUT
High-to-Low (Note 5)
Low-to-High
High-to-Low (Note 6)
Low-to-High
1
= V
85 C for
OUT
OUT
= 0V
(Note 2)
OUT
2
CC
C
LOAD CAPACITANCE (nF)
= High)
= Low)
CC
3
V
120k BAUD
= 5V)
CC
4
60k BAUD
5
Note 4: Supply current measurements in shutdown are performed with
V
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.
20k BAUD
ON/OFF
6
7
0.1V.
8
LT1280A • TPC02
C Grade
C Grade
I Grade
I Grade
9
10
–10
–2
–4
–6
–8
10
HL
2
LT1280A/LT1281A
8
6
4
0
–55
Driver Output Voltage
= 1.4V to 0V and t
MIN
R
120
250
0.8
0.2
0.1
3.5
10
L
4
3
9
= 3k
–25
HL
L
= 3k and C
L
= 1.3V to 2.4V and t
0
= 51pF. Trigger points are
TEMPERATURE (°C)
– 20
TYP
350
250
0.6
0.5
1.3
1.7
1.3
1.7
0.4
0.2
4.2
17
10
15
OUTPUT HIGH
OUTPUT LOW
5
7
5
1
20
V
V
V
V
CC
CC
CC
CC
25
V
V
CC
CC
= 5.5V
= 4.5V
= 4.5V
= 5.5V
LH
L
= 5V
= 5V
50
= 51pF. Trigger
= 1.4V to 0V).
MAX
– 10
100
600
600
1.3
1.3
2.4
3.0
1.0
0.4
20
30
10
7
75
LH
LT1280A • TPC03
= 1.7V
100
UNITS
kBaud
kBaud
3
V/ s
V/ s
mA
mA
mA
k
125
ns
ns
A
A
V
V
V
V
V
A
V
V
s
s