PCA9527 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCA9527' PDF : 22 Pages View PDF
NXP Semiconductors
PCA9527
3-channel bidirectional bus extender for HDMI, I2C-bus and SMBus
[1] LOW-level supply voltage.
[2] VIL specification is for the first LOW level seen by the SDAB/SCLB/CECB lines. VILc is for the second and subsequent LOW levels seen
by the SDAB/SCLB/CECB lines to retain a valid LOW level the static level must be less than VILc.
[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 15
[4] 70
tPHL
HIGH to LOW propagation delay port B to port A; Figure 13
40
tTLH
LOW to HIGH output transition time port A; Figure 13
20
tTHL
HIGH to LOW output transition time port A; Figure 13
20
tPLH
LOW to HIGH propagation delay port A to port B; Figure 14
tPHL
HIGH to LOW propagation delay port A to port B; Figure 14
[5] 125
[5] 130
tTLH
LOW to HIGH output transition time port B; Figure 14
80
tTHL
HIGH to LOW output transition time port B; Figure 14
20
tPLH
LOW to HIGH propagation delay CECA; Figure 16
40
tPHL
HIGH to LOW propagation delay CECA; Figure 16
40
tTLH
LOW to HIGH output transition time CECA; Figure 16
80
tTHL
HIGH to LOW output transition time CECA; Figure 16
20
tsu
set-up time
EN HIGH before START condition [6] 200
th
trec(pd-act)
hold time
recovery time from power-down to
active
EN HIGH after STOP condition
VCC(A) power-down to active;
EN HIGH and VCC(B) on;
VCC(A) ramping up
[6] 200
[7] 200
VCC(B) power-down to active;
EN HIGH and VCC(A) on;
VCC(B) ramping up
[8] 200
Typ[3] Max Unit
115 350 ns
75
180 ns
155 280 ns
60
100 ns
175 310 ns
220 330 ns
130 260 ns
45
100 ns
110 250 ns
80
180 ns
150 260 ns
60
100 ns
-
-
µs
-
-
ns
-
-
µs
-
-
µs
[1] Times are specified with loads of 1.35 kΩ pull-up resistance and 57 pF load capacitance on port B, and 450 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 0.3VCC(A) on port A.
[5] The proportional delay data from port A to port B is measured at 0.3VCC(A) on port A to 0.3VCC(B) on port B.
[6] The enable pin, EN, should only change state when the global bus and the repeater port are in an idle state.
[7] If the VCC(A) ramp up is fast, then the trec(pd-act) time must be allowed before the inputs are switched. If the supply ramp up is slow, the
channels may be connected even before the final supply voltage is reached.
[8] If the VCC(B) ramp up is fast, then the trec(pd-act) time must be allowed before the inputs are switched. If the supply ramp up is slow, the
channels may be connected even before the final supply voltage is reached.
PCA9527_1
Product data sheet
Rev. 01 — 29 June 2009
© NXP B.V. 2009. All rights reserved.
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