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TPS8804 Datasheet(PDF) 13 Page - Texas Instruments

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Part # TPS8804
Description  TPS8804 Smoke Alarm AFE
PDF  48 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS8804 Datasheet(HTML) 13 Page - Texas Instruments

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TPS8804
www.ti.com
SLVSF29 – OCTOBER 2019
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Copyright © 2019, Texas Instruments Incorporated
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIO, OL
IO buffer output low-level
MCU_RX, GPIO. IIO = 3 mA,
VMCU = 1.8 V
0
0.6
V
MCU_RX, GPIO. IIO = 1 mA,
VMCU = 1.5 V
0
0.6
V
VIO, OH
IO buffer output high-level.
Spec is the voltage drop from
VMCU (i.e. VMCU - VOH)
MCU_RX, GPIO. IIO = -3 mA,
VMCU = 1.8 V
0
0.25
0.6
V
MCU_RX, GPIO. IIO = -1 mA,
VMCU = 1.5 V
0
0.6
V
CIN, IO
Input capacitance
LEDEN, CSEL
2
10
pF
CIN, IO
Input capacitance
MCU_TX1, MCU_TX2
2
10
pF
CIN, IO
Pin capacitance
MCU_RX, GPIO
2
10
pF
RIO,PD
IO pulldown resistor
MCU_RX, GPIO
10
MΩ
THERMAL WARNING
TWARNING
Thermal trip point
110
C
THERMAL SHUTDOWN
TSHTDWN
Thermal trip point
125
C
Thermal hysteresis
5
11
15
tOTS,MASK
Thermal error mask time.
OTS_ERR is masked for
tOTS,MASK after device fully
powers up or OTS_EN set to
1
218.75
350
us
I2C IO
VI2C,IL
Low-level input voltage
-0.5
0.3 × VMCU
V
VI2C,IH
High-level input voltage
0.7 × VMCU
V
VI2C,HYS
Hysteresis of Schmitt trigger
inputs
0.05 × VMCU
V
VI2C,OL
Low-level output voltage
3 mA sink current; VMCU
>2V
0
0.4
V
2 mA sink current; VMCU
< 2V
0
0.2 × VMCU
V
II2C,OL
Low-level output current
VOL = 0.4 V
2.5
mA
VOL = 0.6 V
4
mA
II2C,IN
Input current to each I/O pin
0.1VMCU < VI < 0.9VMCUmax
-10
10
µA
CI2C,IN
Capacitance for each I/O pin
10
pF
tI2C,OF
Output fall time
From VIHmin to VILmax,
Standard-Mode
250
ns
From VIHmin to VILmax, Fast-
Mode
250
ns
tI2C,SP
Pulse width of spikes that
must be suppressed by the
input filter
0
50
ns
I2C BUS LINES
fSCL
SCL clock frequency,
Standard-Mode
0
100
kHz
SCL clock frequency Fast-
Mode
0
400
kHz



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