MAX1608 Datasheet, PDF (3/16 Pages) Maxim Integrated Products – Octal SMBus-to-Parallel I/O Expanders

Octal SMBus-to-Parallel I/O Expanders
TIMING CHARACTERISTICS
(V+ = +2.7V to +5.5V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
SMBus Clock Frequency
(Note 5)
DC
SMBCLK Clock Low Time
t_LOW 10% to 10% points
4.7
SMBCLK Clock High Time
t_HIGH 90% to 90% points
4
SMBus Rise Time
SMBCLK, SMBDATA; 10% to 90% points
SMBus Fall Time
SMBCLK, SMBDATA; 90% to 10% points
SMBus Start-Condition
Setup Time
4.7
SMBus Repeated Start-
Condition Setup Time
t_SU:STA 90% to 90% points
500
SMBus Start-Condition Hold
Time
t_HD:STA 10% of SMBDATA to 90% of SMBCLK
4
SMBus Stop-Condition Setup
Time
t_SU:STO 90% of SMBCLK to 10% of SMBDATA
4
SMBus Data Valid to SMBCLK
Rising Edge Time
t_SU:DAT 10% or 90% of SMBDATA to 10% of SMBCLK
250
SMBus Data Hold Time
t_HD:DAT
300
SMBCLK Falling Edge to
SMBDATA Valid Time
Master clocking in data
MAX
100
1
300
UNITS
kHz
µs
µs
µs
ns
µs
ns
µs
µs
ns
ns
3
µs
Note 1: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
Note 2: For supply current, SMBus logic inputs driven to 0 or V+.
Note 3: Data hold and set-up times measured from falling edge of 9th clock.
Note 4: Must be driven to GND, V+, or floating. See SMBus Addressing section.
Note 5: The SMBus logic block is a static design and will work with clock frequencies down to DC. While slow operation is possible,
it violates the 10kHz minimum clock frequency and SMBus specifications and may use excessive space on the bus.
(V+ = +5V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
IO_ SINK CURRENT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
vs. SUPPLY VOLTAGE
15.0
15.0
16
12.5
10.0
IOs = 1111 1111 PULLED UP TO +28V
12.5
10.0 ^{IOs = 1111 1111 PULLED UP TO +28V}
14
V_{IO_} = 1.0V
12
10
7.5
7.5
IOs = 0000 0000
IOs = 0000 0000
5.0
5.0
2.5
2.5
8
V_{IO_} = 0.4V
6
4
2
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
0
0123456
SUPPLY VOLTAGE (V)
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