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ISO1176T Datasheet(PDF) 6 Page - Texas Instruments

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Part # ISO1176T
Description  Isolated Profibus RS-485 Transceiver with Integrated Transformer Driver
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ISO1176T Datasheet(HTML) 6 Page - Texas Instruments

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ISO1176T
SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012
www.ti.com
RECEIVER SWITCHING CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH, tPHL
Propagation delay time
50
65
VCC1 = 5V ± 10%,
VCC2 = 5V ± 5%
tsk(p)
Pulse skew (|tPHL – tPLH|)
2
5
See Figure 16
tPLH, tPHL
Propagation delay time
53
70
VCC1 = 3.3V ± 10%,
VCC2 = 5V ± 5%
tsk(p)
Pulse skew (|tpHL - tpLH|)
2
5
tr
Output signal rise time
2
4
ns
tf
Output signal fall time
2
4
tPZH
Propagation delay, high-impedance-to-high-level output
13
25
DE at VCC1, See Figure 17
tPHZ
Propagation delay, high-level-to-high-impedance output
13
25
tPZL
Propagation delay, high-impedance-to-low-level output
13
25
DE at VCC1, See Figure 18
tPLZ
Propagation delay, low-level-to-high-impedance output
13
25
TRANSFORMER DRIVER CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VCC1 = 5V ± 10%, D1 and D2 connected to
350
450
610
Transformer
fOSC
Oscillator frequency
kHz
VCC1 = 3.3V ± 10%, D1 and D2 connected to
300
400
550
Transformer
RON
Switch on resistance
D1 and D2 connected to 50
Ω pull-up resistors
1
2.5
Ω
VCC1 = 5V ± 10%, See Figure 21, D1 and D2
80
connected to 50
Ω pull-up resistors
tr_D
D1, D2 output rise time
ns
VCC1 = 3.3V ± 10%, See Figure 21, D1 and
70
D2 connected to 50
Ω pull-up resistors
VCC1 = 5V ± 10%, See Figure 21, D1 and D2
55
connected to 50
Ω pull-up resistors
tf_D
D1, D2 output fall time
ns
VCC1 = 3.3V ± 10%, See Figure 21, D1 and
80
D2 connected to 50
Ω pull-up resistors
VCC1 = 2.4 V, D1 and D2 connected to
fSt
Startup frequency
350
kHz
Transformer
VCC1 = 5V ± 10%, See Figure 21, D1 and D2
38
connected to 50
Ω pull-up resistors
tBBM
Break before make time delay
ns
VCC1 = 3.3V ± 10%, See Figure 21, D1 and
140
D2 connected to 50
Ω pull-up resistors
6
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Copyright © 2010–2012, Texas Instruments Incorporated
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