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TCA9554 Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce TCA9554
Description  Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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TCA9554
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SCPS233D – MARCH 2012 – REVISED AUGUST 2015
6.4 Thermal Information
TCA9554
THERMAL METRIC(1)
PW (TSSOP)
DBQ (SSOP)
DB (SSOP)
UNIT
16 PINS
16 PINS
16 PINS
RθJA
Junction-to-ambient thermal resistance
122.0
121.7
113.2
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
56.4
72.9
63.6
°C/W
RθJB
Junction-to-board thermal resistance
67.1
64.2
64.0
°C/W
ψJT
Junction-to-top characterization parameter
10.8
24.4
21.2
°C/W
ψJB
Junction-to-board characterization parameter
66.5
63.8
63.4
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
6.5 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP(1)
MAX
UNIT
VIK
Input diode clamp voltage
II = –18 mA
1.65 V to 5.5 V
–1.2
V
VPORR
Power-on reset voltage, VCC rising
VI = VCC or GND, IO = 0
1.2
1.5
V
VPORF
Power-on reset voltage, VCC falling
VI = VCC or GND, IO = 0
0.75
1.0
V
1.65 V
1.2
2.3 V
1.8
IOH = –8 mA
3 V
2.6
4.5 V
4.1
VOH
P-port high-level output voltage(2)
1.65 V
1.1
V
2.3 V
1.7
IOH = –10 mA
3 V
2.5
4.5 V
4.0
SDA(3)
VOL = 0.4 V
1.65 V to 5.5 V
3
11
1.65 V
8
10
2.3 V
8
13
VOL = 0.5 V
3 V
8
15
4.5 V
8
17
IOL
P port(4)
mA
1.65 V
10
14
2.3 V
10
17
VOL = 0.7 V
3 V
10
20
4.5 V
10
24
INT (5)
VOL = 0.4 V
1.65 V to 5.5 V
3
7
SCL, SDA
±1
II
VI = VCC or GND
1.65 V to 5.5 V
µA
A0, A1, A2
±1
IIH
P port
VI = VCC
1.65 V to 5.5 V
1
µA
IIL
P port
VI = GND
1.65 V to 5.5 V
–100
µA
(1)
All typical values are at nominal supply voltage (1.8-V, 2.5-V, 3.3-V, or 5-V VCC) and TA = 25°C.
(2)
Each P-port I/O configured as a high output must be externally limited to a maximum of 10 mA, and the total current sourced by all I/Os
(P-ports P7-P0) through VCC should be limited to a maximum current of 80 mA.
(3)
The SDA pin must be externally limited to a maximum of 12 mA, and the total current sunk by all I/Os (P-ports P7-P0, INT, and SDA)
through GND should be limited to a maximum current of 200 mA.
(4)
Each P-port I/O configured as a low output must be externally limited to a maximum of 25 mA, and the total current sunk by all I/Os (P-
ports P7-P0, INT, and SDA) through GND should be limited to a maximum current of 200 mA.
(5)
The INT pin must be externally limited to a maximum of 7 mA, and the total current sunk by all I/Os (P-ports P7-P0, INT, and SDA)
through GND should be limited to a maximum current of 200 mA.
Copyright © 2012–2015, Texas Instruments Incorporated
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