LTC2801/LTC2802/
LTC2803/LTC2804
4
2801234fe
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise specified.
Note 3: Guaranteed by other measured parameters and not tested directly.
Note 4: Time from PS
or ON/OFF until V
DD
5V and V
EE
–5V.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
CC
= 1.8V to 5.5V, V
L
= 1.8V to 5.5V, Normal Mode. Typical values are
given for V
CC
= V
L
= 3.3V and T
A
= 25°C, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
SwitchinG characteriSticS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Maximum Data Rate LTC2801, LTC2803 (Note 3)
R
L
= 3kW, C
L
= 2.5nF
R
L
= 3kW, C
L
= 1nF
l
l
100
250
kbps
kbps
LTC2802, LTC2804 (Note 3)
R
L
= 3kW, C
L
= 2.5nF
R
L
= 3kW, C
L
= 1nF
R
L
= 3kW, C
L
= 250pF
l
l
l
100
250
1000
kbps
kbps
kbps
Driver
SR(D) Driver Slew Rate LTC2801, LTC2803 (Figure 1)
V
CC
= V
L
= 1.8V, R
L
= 3kW, C
L
= 2.5nF
V
CC
= V
L
= 5.5V, R
L
= 3kW, C
L
= 50pF
l
l
4
30
V/µs
V/µs
LTC2802, LTC2804 (Figure 1)
V
CC
= V
L
= 1.8V, R
L
= 3kW, C
L
= 2.5nF
V
CC
= V
L
= 5.5V, R
L
= 3kW, C
L
= 50pF
l
l
4
150
V/µs
V/µs
t
PHLD
,
t
PLHD
Driver Propagation Delay
R
L
= 3kW, C
L
= 50pF (Figure 2)
LTC2801, LTC2803
LTC2802, L
TC2804
l
l
1
0.2
2
0.5
µs
µs
t
SKEWD
Driver Skew
R
L
= 3kW, C
L
= 50pF (Figure 2)
LTC2801, LTC2803
LTC2802, L
TC2804
100
50
ns
ns
t
PZHD
,
t
PZLD
Driver Output Enable Time
PS = V
L
, MODE = , R
L
= 3kW, C
L
= 50pF
(Figure 4)
l
0.6 2 µs
t
PHZD
,
t
PLZD
Driver Output Disable Time
PS = V
L
, MODE = , R
L
= 3kW, C
L
= 50pF
(Figure 4)
l
0.3 2 µs
Receiver
t
PHLR
, t
PLHR
Receiver Propagation Delay C
L
= 150pF (Figure 3)
l
0.2 0.4 µs
t
SKEWR
Receiver Skew C
L
= 150pF (Figure 3) 50 ns
t
RR
, t
FR
Receiver Rise or Fall Time C
L
= 150pF (Figure 3)
l
60 200 ns
t
PZHR
,
t
PZLR
Shutdown to Receiver Output Enable
PS = MODE = or ON/OFF = ,
R
L
= 1kW, C
L
= 150pF (Figure 5)
l
5 15 µs
t
PHZR
,
t
PLZR
Receiver Output Disable upon Shutdown
PS = MODE = or ON/OFF = ,
R
L
= 1kW, C
L
= 150pF (Figure 5)
l
0.15 0.3 µs
Power Supply Generator
V
DD
/V
EE
Supply Rise Time (Notes 3 and 4)
l
0.2 2 ms
5
2801234fe
LTC2801/LTC2802/
LTC2803/LTC2804
t
PZLD
0V
0V
V
OLD
V
OHD
TOUT
MODE
TOUT
t
PZHD
1/2 V
L
t
PLZD
V
OLD
+ 0.5V
–5V
V
OHD
– 0.5V5V
2801 F04
V
L
MODE
R
L
C
L
TOUT0 OR V
L
0V
t
PHZD
1/2 V
L
MODE t
r
, t
f
≤ 40ns
Figure 1. Driver Slew Rate Measurement
Figure 3. Receiver Timing Measurement
Figure 2. Driver Timing Measurement
Figure 4. Driver Enable/Disable Times
teSt circuitS
LTC2801/LTC2802/
LTC2803/LTC2804
6
2801234fe
tyPical PerForMance characteriSticS
LTC2803 at 1.8V and 250kbps LTC2804 at 1.8V and 1Mbps
Drivers Disabled Mode Supply
Current vs Supply Voltage
t
PZLR
V
L
0V
V
OLR
V
OHR
ROUT
PS AND MODE
GND V
L
ROUT
t
PZHR
1/2 V
L
t
PLZR
1/2 V
L
1/2 V
L
2801 F05
V
L
PS AND MODE
R
L
C
L
ROUT–3V OR 3V
0V
t
PHZR
1/2 V
L
V
OLR
+ 0.5V
V
OHR
– 0.5V
PS AND MODE t
r
, t
f
≤ 40ns
Figure 5. Receiver Enable/Disable Times
Supply Current vs Supply Voltage
(Dual Transceiver) Supply Current vs Data Rate
Supply Current vs Load
Capacitance (Dual Transceiver)
T
A
= 25°C, V
CC
= V
L
= 3.3V unless otherwise noted.
teSt circuitS
2801 G01
T1IN
T2OUT
T1OUT
R2OUT
R1OUT
2V/DIV
10V/DIV
2V/DIV
2µs/DIVV
CC
= V
L
= 1.8V
WRAPPING DATA
TOUT LOAD = 1nF + RIN
ROUT LOAD = 150pF
2801 G02
T1IN
T2OUT
T1OUT
R2OUT
R1OUT
2V/DIV
10V/DIV
2V/DIV
400ns/DIVV
CC
= V
L
= 1.8V
WRAPPING DATA
TOUT LOAD = 250pF + RIN
ROUT LOAD = 150pF
SUPPLY VOLTAGE (V)
6
SUPPLY CURRENT (mA)
3.0
2.5
2.0
1.5
1.0
0.5
0
1 2 3 4
2801 G03
5
V
CC
= V
L
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
LTC2804
LTC2803
ALL DRIVERS SWITCHING
V
CC
= V
L
R
L
= 3k
C
L
= 1nF
250kbps
20.8kbps
125kbps
SUPPLY VOLTAGE (V)
1
SUPPLY CURRENT (mA)
60
50
40
30
20
10
0
2 3 4 5
2801 G04
6
DATA RATE (kbps)
0
SUPPLY CURRENT (mA)
100
80
60
40
20
0
800
2801 G05
200
400
600
1000
ALL DRIVERS SWITCHING
V
CC
= V
L
= 1.8V
R
L
= 3k
LTC2804
LTC2802
1nF
1nF
250pF
250pF
250kbps
100
80
60
40
20
0
LOAD CAPACITANCE (nF)
1
5
2801 G06
2
3
4
LTC2804
LTC2803
125kbps
V
CC
= V
L
= 1.8V
R
L
= 3k
ALL DRIVERS SWITCHING
20.8kbps
SUPPLY CURRENT (mA)

LTC2804IDHC#TRPBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
RS-232 Interface IC 1.8V-5V 2D+2R 1Mbps RS232 Transceiver w/ Driver Disable
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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