Data Sheet

7
PCA9546A
www.ti.com SCPS148G –OCTOBER 2005–REVISED MAY 2016
Product Folder Links: PCA9546A
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(1) t
rst
is the propagation delay measured from the time the RESET pin is first asserted low to the time the SDA pin is asserted high,
signaling a stop condition. It must be a minimum of t
WL
.
6.6 Interrupt and Reset Timing Requirements
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER MIN MAX UNIT
t
WL
Pulse duration, RESET low 6 ns
t
rst
(1)
RESET time (SDA clear) 500 ns
t
REC(STA)
Recovery time from RESET to start 0 ns
(1) The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load
capacitance, when driven by an ideal voltage source (zero output impedance).
6.7 Switching Characteristics
over recommended operating free-air temperature range, C
L
≤ 100 pF (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN MAX UNIT
t
pd
(1)
Propagation delay time
R
ON
= 20 Ω, C
L
= 15 pF
SDA or SCL SDn or SCn
0.3
ns
R
ON
= 20 Ω, C
L
= 50 pF 1