Datasheet

PCA9517_3 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 03 — 30 January 2007 11 of 19
NXP Semiconductors
PCA9517
Level translating I
2
C-bus repeater
10.1 AC waveforms
11. Test information
Fig 10. Propagation delay and transition times;
B-side to A-side
Fig 11. Propagation delay and transition times;
A-side to B-side
Fig 12. Propagation delay
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3.0 V
1.2 V
t
PLH
t
t(HL)
1.5 V 1.5 Vinput
output
20 %
0.6 V
0.6 V
80 %
20 %
80 %
t
PHL
t
t(LH)
V
OL
0.1 V
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V
CCA
3.0 V
t
PLH
t
t(HL)
0.3V
CCA
0.3V
CCA
input
output
20 %
1.5 V
1.5 V
80 %
20 %
80 %
t
PHL
t
t(LH)
0.5 V
input
SDAB, SCLB
output
SCLA, SDAA
t
PLH
50 % if V
CCA
is less than 2 V
1.5 V if V
CCA
is greater than 2 V
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R
L
= load resistor; 1.35 kΩ on B-side; 167 Ω on A-side (0.9 V to 2.7 V) and 450 Ω on A-side
(3.0 V to 5.5 V).
C
L
= load capacitance includes jig and probe capacitance; 57 pF
R
T
= termination resistance should be equal to Z
o
of pulse generators
Fig 13. Test circuit for open-drain outputs
PULSE
GENERATOR
V
O
C
L
R
L
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R
T
V
I
V
CC(B)
V
CC(B)
DUT
V
CC(A)