PCA9521 Просмотр технического описания (PDF) - NXP Semiconductors.
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PCA9521 Datasheet PDF : 23 Pages
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NXP Semiconductors
PCA9521
Fast dual bidirectional bus buffer
Table 5. Characteristics …continued
Tamb = 40 C to +85 C; voltages are specified with respect to ground (GND).
Symbol Parameter
Conditions
Min
Timing characteristics[1]
td
delay time
tf
fall time
foper(I2C) I2C operating frequency
VCC = 5 V; Vbus = 5 V; Rpu(bus) = 1 k;
-
CL(ext) = 120 pF; Figure 4
VCC = 5 V; Vbus = 5 V; Rpu(bus) = 1 k;
-
CL(ext) = 120 pF; Figure 4
0
td(en-act) enable to active delay time EN HIGH to Sxx active
-
td(dis-stb) disable to standby delay time EN LOW to Sxx disabled
-
[1] Guaranteed by design (not subject to test).
Typ Max Unit
45
-
ns
40
-
ns
-
1000 kHz
1.5
-
s
0.4
-
s
Vbus
70 % VSx2
33 %
VCC
30 % VSx2
VSx2
VSx1
Sx2
td tf
Sx1
time
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Fig 4. Timing parameters
9.2
ICC
(mA)
8.4
VCC = 5.0 V
3.3 V
7.6
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125
Voffset
(mV)
100
75
VCC = Vpu = 5 V
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50
25
0
0
2
4
6
Fig 5.
Tamb = 25 C; Vbus(in) = 200 mV.
Offset voltage, VO VI
8
10
RPU (kΩ)
15
IOL
(mA)
14
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13
12
6.8
−50
0
50
100
150
Tamb (°C)
Fig 6. Supply current versus ambient temperature
11
−50
0
50
100
150
Tamb (°C)
Fig 7.
Vbus(out) = 500 mV; VCC = 2.7 V.
LOW-level output current versus
ambient temperature
PCA9521
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 19 March 2013
© NXP B.V. 2013. All rights reserved.
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