TCA9539_15 Datasheet, PDF (5/42 Pages) Texas Instruments – Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander

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TCA9539
SCPS202B – OCTOBER 2009 – REVISED OCTOBER 2015
6.3 Recommended Operating Conditions
MIN
MAX UNIT
V_CC
Supply voltage
V_IH
High-level input voltage
V_IL
Low-level input voltage
I_OH
High-level output current
I_OL
Low-level output current
T_A
Operating free-air temperature
SCL, SDA
A0, A1, RESET, P07–P00, P10–P17
SCL, SDA
A0, A1, RESET, P07–P00, P10–P17
P07–P00, P17–P10
P07–P00, P17–P10
1.65
5.5 V
0.7 × V_CC
0.7 × V_CC
V_CC ⁽¹⁾
V
5.5
–0.5 0.3 × V_CC
V
–0.5 0.3 × V_CC
–10 mA
25 mA
–40
85 °C
(1) The SCL and SDA pins shall not be at a higher potential than the supply voltage V_CC in the application, or an increase in supply current,
I_CC, will result
6.4 Thermal Information
THERMAL METRIC ⁽¹⁾
TCA9539
PW (TSSOP) RTW (WQFN) RGE (VQFN)
UNIT
24 PINS
24 PINS
24 PINS
R_θJA
Junction-to-ambient thermal resistance
R_θJC(top) Junction-to-case (top) thermal resistance
R_θJB
Junction-to-board thermal resistance
ψ_JT
Junction-to-top characterization parameter
ψ_JB
Junction-to-board characterization parameter
R_{θJC(bottom)} Junction-to-case (bottom) thermal resistance
108.8
43.6
54.0
46.2
62.8
22.1
11.1
1.5
62.3
22.2
—
10.7
48.4
°C/W
58.1
°C/W
27.1
°C/W
3.3
°C/W
27.2
°C/W
15.3
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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