TCA9555_16 Datasheet, PDF (6/46 Pages) Texas Instruments – Low-Voltage 16-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers

TCA9555
SCPS200D – JULY 2009 – REVISED JULY 2016
www.ti.com
7.4 Thermal Information
TCA9555
THERMAL METRIC⁽¹⁾
PW
(TSSOP)
DB
(SSOP)
RTW
(WQFN)
RGE
(VQFN)
UNIT
24 PINS 24 PINS 24 PINS 24 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
R_θJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
108.8
92.9
43.6
48.4
°C/W
54
53.5
46.2
58.1
°C/W
62.8
50.4
22.1
27.1
°C/W
11.1
21.9
1.5
3.3
°C/W
62.3
50.1
22.2
27.2
°C/W
N/A
N/A
10.7
15.3
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
V_IK
V_PORR
V_PORF
Input diode clamp voltage
Power-on reset voltage, V_CC rising
Power-on reset voltage, V_CC falling
TEST CONDITIONS
I_I = –18 mA
V_I = V_CC or GND, I_O = 0
V_I = V_CC or GND, I_O = 0
V_CC
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V
I_OH = –8 mA
2.3 V
3V
V_OH P-port high-level output voltage⁽²⁾
4.75 V
1.65 V
I_OH = –10 mA
2.3 V
3V
4.75 V
I_OL
Low-level output current
I_I
Input leakage current
SDA
P port⁽³⁾
INT
SCL,
SDA
Input
leakage
A2–A0
Input
leakage
V_OL = 0.4 V
V_OL = 0.5 V
V_OL = 0.7 V
V_OL = 0.4 V
V_I = V_CC or GND
V_I = V_CC or GND
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
I_IH
Input high leakage current
I_IL
Input low leakage current
P port
P port
V_I = V_CC
V_I = GND
1.65 V to 5.5 V
1.65 V to 5.5 V
MIN
–1.2
0.75
1.2
1.8
2.6
4.1
1
1.7
2.5
4
3
8
10
3
TYP⁽¹⁾ MAX UNIT
V
1.2 1.5 V
1
V
V
mA
mA
mA
mA
±1 μA
±1 μA
1 μA
–100 μA
(1) All typical values are at nominal supply voltage (1.8-, 2.5-, 3.3-, or 5-V V_CC) and T_A = 25°C.
(2) Each I/O must be externally limited to a maximum of 25 mA, and each octal (P07–P00 and P17–P10) must be limited to a maximum
current of 100 mA, for a device total of 200 mA.
(3) The total current sourced by all I/Os must be limited to 160 mA (80 mA for P07–P00 and 80 mA for P17–P10).
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