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DC ELECTRICAL CHARACTERISTICS (cont.)
VDD = 3.3 V, GND = 0V, T = Operating Temperature Range (unless otherwise specified).
A
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Receiver Enable Delay
tREN
From RXENA/B rising or falling edge to
40
ns
RXA/B or
Driver Delay
tDT
TXA/B, TXA/B to BUSA/B, BUSA/B
150
ns
Rise time
tr
35 ohm load
100
300
ns
Fall Time
tf
35 ohm load
100
300
ns
Inhibit Delay
tDI-H
Inhibited output
100
ns
tDI-L
Active output
150
ns
Note 1. Measured using a 1 MHz sinusoid, 20 V peak to peak, line to line at point “AT” (Guaranteed but not tested).
Note 2. Measured using a 1 MHz sinusoid, 860 mV peak to peak, line to line at point “AT” (100% tested).
Note 3. Measured using a 1 MHz sinusoid, 860 mV peak to peak, line to line at point “AT”. Measured from input zero crossing point.
RECEIVER
TRANSMITTER
(Measured at Point “A ” in Figure 3)
(Measured at Point “A ” in Figure 2)
T
D
Receiver Delay
tDR
From input zero crossing to RXA/B or
500
ns
Note 3
Receiver gap time
tRG
Spacing between RXA/B and RXA/B pulses
60
430
ns
Note 1
Note 2
RXA/B
RXA/B
AC ELECTRICAL CHARACTERISTICS
VDD = 3.3 V, GND = 0V, T =Operating Temperature Range (unless otherwise specified).
A
TXA/B
TXA/B
TXINHA/B
TRANSMITTER
RECEIVER
1:2.5
Point “A “
D
55
55
35
2.5:1
55
55
35
RXENA/B
BUSA/B
BUSA/B
RXA/B
RXA/B
Figure 2. Direct Coupled Test Circuits
Isolation
Transformer
Isolation
Transformer
Point “A “
D
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNITS
Output Voltage
Direct coupled
35 ohm load
.6.0
9.0
Vp-p
(Measured at Point “A “ in Figure 2)
70
.18.0
27.0
Vp-p
Output Noise
V
Differential, inhibited
10.0
mVp-p
Output Dynamic Offset Voltage
V
-90
90
mV
-250
250
mV
Output resistance
R
Differential, not transmitting
10
Kohm
Output Capacitance
C
1 MHz sine wave
15
pF
TRANSMITTER
(Measured at Point “A ” in Figure 2 unless otherwise specified)
D
D
V
Transformer coupled
V
ohm load
(Measured at Point “A “ in Figure 3)
Direct coupled
35 ohm load
(Measured at Point “A “ in Figure 2)
Transformer coupled
V
70 ohm load
(Measured at Point “A “ in Figure 3)
OUT
OUT
DYN
T
D
T
ON
DYN
OUT
OUT
HOLT INTEGRATED CIRCUITS
5
HI-1573, HI-1574