MAX14782E_14 Datasheet, PDF (8/17 Pages) Maxim Integrated Products – 500Kbps 3.3V to 5V RS-485/RS-422 Transceiver with ±35kV HBM ESD Protection

MAX14782E
500Kbps 3.3V to 5V RS-485/RS-422 Transceiver
with ±35kV HBM ESD Protection
A
B
VOH
RO
VOL
Figure 7. Receiver Propagation Delays
t_RPHL
tRPLH
1.5V
1.5V
tRSKEW = |tRPHL - tRPLH|
+1.5V
S3
R
S1
-1.5V
1kΩ
V_ID R ^RO
VCC
S2
C_L
15pF
RE
GENERATOR
50Ω
RE
RO
RE
1.5V
t_RHZ
RO
0.25V
VCC
1.5V
tRZH, tRZH(SHDN)⁰
S1 OPEN
S2 CLOSED
S3 = +1.5V
V_OH
VCC
2
0
VCC _{S1 OPEN}
S2 CLOSED
S3 = +1.5V
0
V_OH
0
RE
tRZL, tRZL(SHDN)
RO
1.5V
RE
tRLZ
RO
0.25V
Figure 8. Receiver Enable and Disable Times
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1V
-1V
VCC
S1 CLOSED
1.5V
S2 OPEN
0 ^{S3 = -1.5V}
VCC
V_CC
2
VOL
VCC _{S1 CLOSED}
S2 OPEN
S3 = -1.5V
0
VCC
VOL
Maxim Integrated│  8