MAX485ESA+ Maxim, MAX485ESA+ Datasheet - Page 10

• Manufacturer Part Number: MAX485ESA+
• Description: Transceiver; RS-485/RS-422; 2 V (Min.) (Input High), 0.8 V (Max.) (Input Low)
• Manufacturer: Maxim

Specifications of MAX485ESA+

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

±15kV ESD-Protected, Slew-Rate-Limited,
Low-Power, RS-485/RS-422 Transceivers
Figure 4. Human Body ESD Test Model
Figure 6. IEC1000-4-2 ESD Test Model
Figure 8. Driver DC Test Load
10
VOLTAGE
VOLTAGE
SOURCE
SOURCE
______________________________________________________________________________________
HIGH-
HIGH
DC
DC
CHARGE CURRENT
CHARGE CURRENT
LIMIT RESISTOR
LIMIT RESISTOR
R
C
50M to 100M
Y
Z
R
C
100pF
150pF
1M
C s
V
C s
OD
STORAGE
CAPACITOR
STORAGE
CAPACITOR
R
RESISTANCE
R
RESISTANCE
DISCHARGE
DISCHARGE
D
D
1500
330
R
R
V
OC
DEVICE
UNDER
DEVICE
UNDER
TEST
TEST
Figure 5. Human Body Model Current Waveform
Figure 7. IEC1000-4-2 ESD Generator Current Waveform
Figure 9. Receiver Timing Test Load
AMPERES
t r = 0.7ns to 1ns
RECEIVER
OUTPUT
I
P
36.8%
100%
90%
10%
15pF
0
100%
C
90%
10%
0
TEST POINT
RL
I
t
RL
30ns
1k
CURRENT WAVEFORM
TIME
t
60ns
DL
I r
S1
S2
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
1k
V
CC
t