Datasheet

TCA8418E
www.ti.com SCPS222B –MAY 2010–REVISED SEPTEMBER 2010
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, V
CC
= 1.65 V to 3.6 V (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CCP
MIN TYP MAX UNIT
V
IK
Input diode clamp voltage I
I
= –18 mA 1.65 V to 3.6 V –1.2 V
V
POR
Power-on reset voltage V
I
= V
CCP
or GND, I
O
= 0 1.65 V to 3.6 V 1 1.4 V
I
OH
= –1 mA 1.65 V 1.25
1.65 V 1.2
I
OH
= –8 mA 2.3 V 1.8
ROW0–7, COL0–9 high-level
V
OH
3 V 2.6 V
output voltage
1.65 V 1.1
I
OH
= –10 mA 2.3 V 1.7
3 V 2.5
I
OL
= 1 mA 1.65 V 0.4
1.65 V 0.45
I
OL
= 8 mA 2.3 V 0.25
ROW0–7, COL0–9 low-level
V
OL
3 V 0.25 V
output voltage
1.65 V 0.6
I
OL
= 10 mA 2.3 V 0.3
3 V 0.25
SDA V
OL
= 0.4 V 1.65 V to 3.6 V 3
I
OL
mA
INT and CAD_INT V
OL
= 0.4 V 1.65 V to 3.6 V 3
SCL, SDA, ROW0–7, COL0–9,
I
I
V
I
= V
CCI
or GND 1.65 V to 3.6 V 1 mA
RESET
r
INT
ROW0–7, COL0–9 55 kΩ
Oscillator
13
OFF
f
SCL
= 0 kHz 1.65 V to 3.6 V
Oscillator
18
ON
1.65 V 15
f
SCL
= 400 kHz
3.6 V 30
V
I
on SDA,
1 key press
1.65 V 15
ROW0–7,
f
SCL
= 1 MHz
COL0–9 = V
CC
or
3.6 V 40
I
CC
mA
GND,
f
SCL
= 400 kHz GPI low 115
I
O
= 0, I/O =
(pullup
inputs,
f
SCL
= 1 MHz 125
enable)
(1)
f
SCL
= 400 kHz GPI low 25
1.65 V to 3.6 V
(pullup
f
SCL
= 1 MHz 35
disable)
f
SCL
= 400 kHz 115
1 GPO
active
f
SCL
= 1 MHz 125
C
I
SCL V
I
= V
CCI
or GND 1.65 V to 3.6 V 6 8 pF
SDA 10 12.5
C
io
V
IO
= V
CC
or GND 1.65 V to 3.6 V pF
ROW0–7, COL0–9 5 6
(1) Assumes that one GPIO is enabled.
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