Datasheet

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)