PCA9517 查看數據表（PDF） - NXP Semiconductors.
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PCA9517 Datasheet PDF : 19 Pages
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NXP Semiconductors
PCA9517
Level translating I2C-bus repeater
Table 4. 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)
ILI
Ci
LOW-level input voltage
HIGH-level input voltage
LOW-level input current on pin EN VI = 0.2 V, EN; VCC = 3.6 V
input leakage current
input capacitance
VI = 3.0 V or 0 V
−0.5
-
0.7VCCB -
-
−10
−1
-
-
6
Max
Unit
+0.3VCCB 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 A-side with envelope noise must be below 0.3VCCA for stable performance.
10. Dynamic characteristics
Table 5. 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 B-side to A-side; Figure 12
[4] 100
tPHL
HIGH-to-LOW propagation delay B-side to A-side; Figure 10
VCCA ≤ 2.7 V
[5] 30
VCCA ≥ 3 V
10
tt(LH)
LOW-to-HIGH transition time
A-side; Figure 10
10
tt(HL)
HIGH-to-LOW transition time
A-side; Figure 10
VCCA ≤ 2.7 V
[5] 1
VCCA ≥ 3 V
20
tPLH
LOW-to-HIGH propagation delay A-side to B-side; Figure 11
[6] 25
tPHL
HIGH-to-LOW propagation delay A-side to B-side; Figure 11
[6] 60
tt(LH)
LOW-to-HIGH transition time
B-side; Figure 11
120
tt(HL)
tsu
HIGH-to-LOW transition time
set-up time
B-side; Figure 11
EN HIGH before START condition
30
[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 the B-side, and 167 Ω pull-up resistance
and 57 pF load capacitance on the A-side. Different load resistance and capacitance will alter the RC time constant, thereby changing
the propagation delay and transition times.
[2] Pull-up voltages are VCCA on the A-side and VCCB on the B-side.
[3] Typical values were measured with VCCA = 3.3 V at Tamb = 25 °C, unless otherwise noted.
[4] The tPLH delay data from B-side to A-side is measured at 0.5 V on the B-side to 0.5VCCA on the A-side when VCCA is less than 2 V, and
1.5 V on the A-side if VCCA is greater than 2 V.
[5] Typical value measured with VCCA = 2.7 V at Tamb = 25 °C.
[6] The proportional delay data from A-side to B-side is measured at 0.3VCCA on the A-side to 1.5 V on the B-side.
[7] The enable pin, EN, should only change state when the global bus and the repeater port are in an idle state.
PCA9517_3
Product data sheet
Rev. 03 — 30 January 2007
© NXP B.V. 2007. All rights reserved.
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