TCA6408A Datasheet, PDF (14/35 Pages) Texas Instruments – LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

TCA6408A
SCPS192C – APRIL 2009– REVISED JULY 2009............................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over recommended operating free-air temperature range, V_CCI = 1.65 V to 5.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CCP
MIN TYP⁽¹⁾
ΔI_CCI
ΔI_CCP
Additional
current in
standby
mode
SCL, SDA,
RESET
P port,
ADDR
One input at V_CCI – 0.6 V,
Other inputs at V_CCI or GND
One input at V_CCP – 0.6 V,
Other inputs at V_CCP or GND
1.65 V to 5.5 V
1.65 V to 5.5 V
C_i
SCL
V_I = V_CCI or GND
1.65 V to 5.5 V
6
SDA
C_io
P port
V_IO = V_CCI or GND
1.65 V to 5.5 V
7
V_IO = V_CCP or GND
7.5
MAX
25
UNIT
µA
80 µA
7
pF
8
pF
8.5
I²C INTERFACE TIMING REQUIREMENTS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 10)
f_scl
t_sch
t_scl
t_sp
t_sds
t_sdh
t_icr
t_icf
t_ocf
t_buf
t_sts
t_sth
t_sps
t_vd(data)
t_vd(ack)
I²C clock frequency
I²C clock high time
I²C clock low time
I²C spike time
I²C serial data setup time
I²C serial data hold time
I²C input rise time
I²C input fall time
I²C output fall time, 10-pF to 400-pF bus
I²C bus free time between Stop and Start
I²C Start or repeater Start condition setup time
I²C Start or repeater Start condition hold time
I²C Stop condition setup time
Valid data time, SCL low to SDA output valid
Valid data time of ACK condition, ACK signal from SCL low to
SDA (out) low
STANDARD MODE
I²C BUS
MIN
MAX
0
100
4
4.7
0
50
250
0
1000
300
300
4.7
4.7
4
4
1
1
FAST MODE
I²C BUS
MIN
MAX
0
400
0.6
1.3
0
50
100
0
20 + 0.1C_b
300
20 + 0.1C_b
300
20 + 0.1C_b
300
1.3
0.6
0.6
0.6
1
1
UNIT
kHz
µs
µs
ns
ns
ns
ns
ns
µs
µs
µs
µs
µs
µs
µs
RESET TIMING REQUIREMENTS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 13)
t_W
t_REC
t_RESET
Reset pulse duration
Reset recovery time
Time to reset
STANDARD MODE
I²C BUS
MIN
MAX
4
0
600
FAST MODE
I²C BUS
MIN
MAX
4
0
600
UNIT
ns
ns
ns
14
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