PCA9517A(2008) Просмотр технического описания (PDF) - NXP Semiconductors.
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PCA9517A Datasheet PDF : 19 Pages
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NXP Semiconductors
PCA9517A
Level translating I2C-bus repeater
Table 5. Static characteristics …continued
VCC = 2.7 V to 5.5 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Enable
VIL
VIH
IIL(EN)
LOW-level input voltage
HIGH-level input voltage
LOW-level input current on
pin EN
VI = 0.2 V, EN; VCC = 3.6 V
−0.5
-
0.7VCC(B) -
-
−10
ILI
input leakage current
Ci
input capacitance
VI = 3.0 V or 0 V
−1
-
-
6
Max
Unit
+0.3VCC(B) V
5.5
V
−30
µA
+1
µA
7
pF
[1] LOW-level supply voltage.
[2] VIL specification is for the first LOW level seen by the SDAB/SCLB lines. VILc is for the second and subsequent LOW levels seen by the
SDAB/SCLB lines.
[3] VIL for port A with envelope noise must be below 0.3VCC(A) for stable performance.
10. Dynamic characteristics
Table 6. Dynamic characteristics
VCC = 2.7 V to 5.5 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.[1][2]
Symbol Parameter
Conditions
Min
tPLH
LOW-to-HIGH propagation delay
port B to port A; Figure 12
[4] 100
tPHL
HIGH-to-LOW propagation delay
port B to port A; Figure 10
VCC(A) ≤ 2.7 V
[5] 30
VCC(A) ≥ 3 V
10
tTLH
LOW to HIGH output transition time port A; Figure 10
10
tTHL
HIGH to LOW output transition time port A; Figure 10
VCC(A) ≤ 2.7 V
[5] 1
VCC(A) ≥ 3 V
tPLH
LOW-to-HIGH propagation delay
port A to port B; Figure 11
tPHL
HIGH-to-LOW propagation delay
port A to port B; Figure 11
20
[6] 25
[6] 60
tTLH
LOW to HIGH output transition time port B; Figure 11
120
tTHL
HIGH to LOW output transition time port B; Figure 11
30
tsu
set-up time
EN HIGH before START condition [7] 100
th
hold time
EN HIGH after STOP condition
[7] 100
Typ[3] Max
170 250
Unit
ns
80
110 ns
66
300 ns
20
30
ns
77
105 ns
70
175 ns
53
110 ns
79
230 ns
140 170 ns
48
90
ns
-
-
ns
-
-
ns
[1] Times are specified with loads of 1.35 kΩ pull-up resistance and 57 pF load capacitance on port B, and 167 Ω pull-up resistance and
57 pF load capacitance on port A. Different load resistance and capacitance will alter the RC time constant, thereby changing the
propagation delay and transition times.
[2] Pull-up voltages are VCC(A) on port A and VCC(B) on port B.
[3] Typical values were measured with VCC(A) = 3.3 V at Tamb = 25 °C, unless otherwise noted.
[4] The tPLH delay data from port B to port A is measured at 0.5 V on port B to 0.5VCC(A) on port A when VCC(A) is less than 2 V, and 1.5 V
on port A if VCC(A) is greater than 2 V.
[5] Typical value measured with VCC(A) = 2.7 V at Tamb = 25 °C.
[6] The proportional delay data from port A to port B is measured at 0.3VCC(A) on port A to 1.5 V on port B.
[7] The enable pin, EN, should only change state when the global bus and the repeater port are in an idle state.
PCA9517A_2
Product data sheet
Rev. 02 — 5 May 2008
© NXP B.V. 2008. All rights reserved.
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