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TCA8418 Datasheet, PDF (4/37 Pages) Texas Instruments – I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION
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TCA8418
SCPS215 – SEPTEMBER 2009 ......................................................................................................................................................................................... www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
VCC
Supply voltage range
VI
Input voltage range(2)
Voltage range applied to any output in the high-impedance or power-off state(2)
VO
Output voltage range in the high or low state(2)
IIK
Input clamp current
VI < 0
IOK
Output clamp current
VO < 0
P port, SDA
IOL
Continuous output Low current
INT
VO = 0 to VCC
IOH
Continuous output High current
P port
Tstg
Storage temperature range
VO = 0 to VCC
MIN
MAX UNIT
–0.5
4.6 V
–0.5
4.6 V
–0.5
4.6
V
–0.5
4.6
±20 mA
±20 mA
50
25 mA
50
–65
150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
THERMAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
θJA
Package thermal impedance(1)
(1) The package thermal impedance is calculated in accordance with JESD 51-7.
RTW package
YFP package
37.8
TBD
UNIT
°C/W
RECOMMENDED OPERATING CONDITIONS
VCC
Supply voltage
VIH
High-level input voltage
VIL
Low-level input voltage
IOH
High-level output current
IOL
Low-level output current
TA
Operating free-air temperature
SCL, SDA, ROW0–7, COL0–9, RESET
SCL, SDA, ROW0–7, COL0–9, RESET
ROW0–7, COL0–9
ROW0–7, COL0–9
MIN
1.65
0.7 × VCC
–0.5
–40
MAX
3.6
3.6
0.3 × VCC
10
25
85
UNIT
V
V
V
mA
mA
°C
4
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