Electrical characteristics (continued) – Rainbow Electronics MAX11042 User Manual
Page 4
MAX11041/MAX11042
Wired Remote Controllers
4
_______________________________________________________________________________________
Note 1: Recommended properties of external switch for proper detection of 30 keys or key combinations.
Note 2: See the Jack Insertion/Removal Detection section.
Note 3: C
b
is the bus capacitance in pF.
Note 4: Key current depends on external key resistors and is calculated by V
DD
/ (30.1k
Ω + R
SW
).
Figure 1. I
2
C Serial-Interface Timing
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +1.6V to 3.6V, C
SENSE
= 10nF, R
SENSE
= 10k
Ω, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLIES
Power-Supply Voltage
V
DD
1.6
3.6
V
Excluding jack/key current
5
20
Average Operational Supply
Current
I
DDOP
Jack inserted, R
JACK
= 619k
Ω
8
µA
Shutdown Power-Supply Current
I
DDSHDN
Excluding jack/key current
1
µA
Jack Current
I
DDJACK
Flowing when jack is inserted
4
µA
Key Current
I
DDBUTTON
Flowing when keys pressed (Note 4)
90
µA
SHDN High to Part Active
Wake-up time
5
ms
t
HD,STA
t
SU,DAT
SDA
t
HD,DAT
SCL
STOP CONDITION
(P)
t
SU,STA
t
SU,STO
t
LOW
t
BUF
START CONDITION
(S)
t
HD,STA
t
HIGH
t
RR,
t
RT
t
FR,tFT
t
RR
t
FR
START CONDITION
(S)
REPEAT START CONDITION
(Sr)