LTC1518_15 Datasheet, PDF (4/12 Pages) Linear Technology – 52Mbps Precision Delay RS485 Quad Line Receivers

LTC1518/LTC1519
TYPICAL PERFOR A CE CHARACTERISTICS
CMRR vs Frequency
46.5
46.0
45.5
45.0
44.5
44.0
43.5
43.0
42.5
T_A = 25°C
V_CM = 2.5V
42.0
10
1k
100k
FREQUENCY (Hz)
10M
15189 G01
Supply Current
vs Temperature and Data Rate
30
V_CM = 2.5V
V_ID = 1.5V
25 1 RECEIVER
SWITCHING
20
15
10
100°C
25°C
5
0°C
–25°C
–50°C
0
0
10
20
30
40
50
DATA RATE (Mbps)
15189 G04
Propagation Delay (t_PLH/t_PHL)
vs Temperature
25
V_CM = 2.5V
V_ID = 1.5V
20
15
10
5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
15189 G02
Propagation Delay
vs Load Capacitance
30
T_A = 25°C
25
V_CM = 2.5V
V_ID = 1.5V
20
15
10
5
0
5 15 25 35 55 105
LOAD CAPACITANCE (pF)
205
15189 G05
Supply Current vs Data Rate
50
45
T_A = 25°C
V_CM = 2.5V
40 ^{VID = 1.5V}
35
4 RECEIVERS
30
SWITCHING
25
20
1 RECEIVER
SWITCHING
15
10
5
0
0
10
20
30
40
50
DATA RATE (Mbps)
15189 G03
Propagation Delay
vs Common Mode
25
T_A = 25°C
V_ID = 1.5V
20
15
10
5
0
–6 –4 –2 0 2 4 6 8
COMMON MODE (V)
10 12
15189 G06
Propagation Delay
vs Input Differential Voltage
25
T_A = 25°C
V_CM = 2.5V
20
15
Maximum Data Rate
vs Input Differential Voltage
70
T_A = 25°C
60 V_CM = 2.5V
50
40
10
30
20
5
10
0
0.3 0.5
1.0
1.5
2.0
2.5
INPUT DIFFERENTIAL (V)
15189 G07
0
0.3 0.5
1.0
1.5
2.0
2.5
INPUT DIFFERENTIAL (V)
15189 G08
4