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ADM13305-33ARZ1 Scheda tecnica(PDF) 5 Page - Analog Devices

Il numero della parte ADM13305-33ARZ1
Spiegazioni elettronici  Dual Processor Supervisors with Watchdog
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM13305
Rev. 0 | Page 5 of 12
TIMING REQUIREMENTS
VDD = 2.7 V to 5.5 V, RL = 1 MΩ, CL = 50 pF, TA = 25°C.
Table 3. ADM13305-18, ADM13305-25 and ADM13305-33
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
PULSE WIDTH (tw)
SENSEv
6
μs
VSENSEvL = VIT− − 0.3 V, VSENSEvH = VIT+ + 0.3 V
MR
100
ns
VIH = 0.7 × VDD, VIL = 0.3 × VDD
WDI
100
ns
VIH = 0.7 × VDD, VIL = 0.3 × VDD
Table 4. ADM13305-4 and ADM13305-5
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
PULSE WIDTH (tw)
SENSEv
30
μs
VSENSEvL = VIT− − 0.3 V, VSENSEvH = VIT+ + 0.3 V
MR
100
ns
VIH = 0.7 × VDD, VIL = 0.3 × VDD
WDI
100
ns
VIH = 0.7 × VDD, VIL = 0.3 × VDD
SWITCHING CHARACTERISTICS
VDD = 2.7 V to 5.5 V, RL = 1 MΩ, CL = 50 pF, TA = 25°C.
Table 5. ADM13305-18, ADM13305-25 and ADM13305-33
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
Watchdog Timeout (tt(OUT))
1.1
1.6
2.3
sec
VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD
Delay Time (td)
140
200
280
ms
VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD
Propagation Delay, High-to-Low, MR to RESET1/RESET (tPHL)
200
500
ns
VI(SENSEv) ≥ VIT+ + 0.2 V, VIH ≥ 0.7 × VDD, VIL ≥ 0.3 × VDD
Propagation Delay, Low-to-High, MR to RESET/RESET1 (tPLH)
200
500
ns
VI(SENSEv) ≥ VIT+ + 0.2 V, VIH ≥ 0.7 × VDD, VIL ≥ 0.3 × VDD
Propagation Delay, High-to-Low, SENSEv to RESET1/RESET (tPHL)
1
5
μs
VIH = VIT+ + 0.3 V, VIL = VIT− − 0.3 V, MR ≥ 0.7 × VDD
Propagation Delay, Low-to-High, SENSEv to RESET/RESET1 (tPLH)
1
5
μs
VIH = VIT+ + 0.3 V, VIL = VIT− − 0.3 V, MR ≥ 0.7 × VDD
1 The reset timeout delay of 200 ms masks the propagation delay.
Table 6. ADM13305-4 and ADM13305-5
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
Watchdog Timeout (tt(out))
1.1
1.6
2.3
sec
VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD
Delay Time (td)
140
200
280
ms
VI(SENSEv) ≥ VIT+ + 0.2 V, MR ≥ 0.7 × VDD
Propagation Delay, High-to-Low, MR to RESET1/RESET (tPHL)
200
500
ns
VI(SENSEv) ≥ VIT+ + 0.2 V, VIH ≥ 0.7 × VDD, VIL ≥ 0.3 × VDD
Propagation Delay, Low-to-High, MR to RESET/RESET1 (tPLH)
200
500
ns
VI(SENSEv) ≥ VIT+ + 0.2 V, VIH ≥ 0.7 × VDD, VIL ≥ 0.3 × VDD
Propagation Delay, High-to-Low, SENSEv to RESET1/RESET (tPHL)
30
μs
VIH = VIT+ + 0.3 V, VIL = VIT− − 0.3 V, MR ≥ 0.7 × VDD
Propagation Delay, Low-to-High, SENSEv to RESET/RESET1 (tPLH)
30
μs
VIH = VIT+ + 0.3 V, VIL = VIT− − 0.3 V, MR ≥ 0.7 × VDD
1 The reset timeout delay of 200 ms masks the propagation delay.
FUNCTIONAL TRUTH TABLE
Table 7.
MR
SENSE1 > VIT1
SENSE2 > VIT2
RESET
RESET
L
X1
X1
L
H
H
0
0
L
H
H
0
1
L
H
H
1
0
L
H
H
1
1
H
L
1 X = don’t care.


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