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TCA9538DBRG4.A 데이터시트(PDF) 7 Page - Texas Instruments

부품명 TCA9538DBRG4.A
상세설명  TCA9538 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset, and Configuration Registers
PDF  40 Pages
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제조업체  TI2 [Texas Instruments]
홈페이지  https://www.ti.com
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TCA9538DBRG4.A 데이터시트(HTML) 7 Page - Texas Instruments

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TCA9538
www.ti.com
SCPS199D – AUGUST 2014 – REVISED OCTOBER 2016
Product Folder Links: TCA9538
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Copyright © 2014–2016, Texas Instruments Incorporated
I
2C Interface Timing Requirements (continued)
over operating free-air temperature range (unless otherwise noted) (see Figure 9)
MIN
MAX
UNIT
tsdh
I2C serial-data hold time
0
ns
ticr
I2C input rise time
20
300
ns
ticf
I2C input fall time
20 × (VDD /
5.5 V)
300
ns
tocf
I2C output fall time
10-pF to 400-pF bus
20 × (VDD /
5.5 V)
300
ns
tbuf
I2C bus free time between Stop and Start
1.3
μs
tsts
I2C Start or repeated Start condition setup
0.6
μs
tsth
I2C Start or repeated Start condition hold
0.6
μs
tsps
I2C Stop condition setup
0.6
μs
tvd(data)
Valid data time
SCL low to SDA output valid
0.9
μs
tvd(ack)
Valid data time of ACK condition
ACK signal from SCL low to
SDA (out) low
0.9
μs
Cb
I2C bus capacitive load
400
ns
6.7 RESET Timing Requirements
over operating free-air temperature range (unless otherwise noted)
PARAMETER
MIN
MAX
UNIT
STANDARD and FAST MODE
tw
Reset pulse duration
4
ns
tREC
Reset recovery time
0
ns
tRESET
Time to reset; VCC = 2.3 V-5.5 V
400
ns
Time to reset; VCC = 1.65 V-2.3 V
550
6.8 Switching Characteristics
over operating free-air temperature range (unless otherwise noted) (see Figure 10 and Figure 11)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN
MAX
UNIT
STANDARD and FAST MODE
tiv
Interrupt valid time
P port
INT
4
μs
tir
Interrupt reset delay time
SCL
INT
4
μs
tpv
Output data valid; VCC = 2.3 V-5.5 V
SCL
P7–P0
200
ns
Output data valid; VCC = 1.65 V-2.3 V
300
tps
Input data setup time
P port
SCL
100
ns
tph
Input data hold time
P port
SCL
1
μs



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