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+3.3V/+5V, 8-Channel Relay Drivers with Fast
Recovery Time and Power-Save Mode
ELECTRICAL CHARACTERISTICS (continued)
(V CC = +2.7V to +5.5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V CC = 2.7V, T A = +25°C, unless otherwise
noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Data Hold Time
t DH
0
ns
SCLK Fall to DOUT Valid
Rise Time (DIN, SCLK, CS , SET ,
RESET )
Fall Time (DIN, SCLK, CS ,
RESET , SET )
RESET Minimum Pulse Width
SET Minimum Pulse Width
CS Minimum Pulse Width
t DO
t SCR
t SCF
t RW
t SW
t CSW
50% of SCLK to (V IH , V IL of D IN ),
C L = 50pF
20% of V CC to 70% of V CC , C L = 50pF
(Note 6)
20% of V CC to 70% of V CC , C L = 50pF
(Note 6)
70
70
40
17
28
2
2
ns
μs
μs
ns
ns
ns
PARALLEL TIMING (MAX4824/MAX4825)
Turn-On Time
Turn-Off Time
LVL Setup Time
LVL Hold Time
Address to CS Setup Time
Address to CS Hold Time
Rise Time (A2, A1, A0, LVL)
Fall Time (A2, A1, A0, LVL)
RESET Pulse Width
SET Pulse Width
CS Minimum Pulse Width
t ON
t OFF
t LS
t LH
t AS
t AH
t SCR
t SCF
t RW
t SW
t CSW
From rising edge of CS , R L = 50 ? ,
C L = 50pF
From rising edge of CS , R L = 50 ? ,
C L = 50pF
20% of V CC to 70% of V CC , C L = 50pF
(Note 6)
20% of V CC to 70% of V CC , C L = 50pF
(Note 6)
20
0
20
0
70
70
40
1
3
2
2
μs
μs
ns
ns
ns
ns
μs
μs
ns
ns
ns
POWER-SAVE TIMING (MAX4822/MAX4824)
Power-Save Delay Time
Minimum PSAVE Low Time to
Power-Save Reset
t PS
t PSR
Variation from typical value, C L = 100nF
(Note 7)
1.6
3.2
2
5.4
3.5
ms
ms
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Specifications at -40°C are guaranteed by design and not production tested.
Thermal shutdown disables power save from all channels to reduce power dissipation inside the device.
Thermal shutdown turns off all channels.
The circuit can set the output voltage in power-save mode only if I OUT x R ON < V OUTP .
After relay turn-off, inductive kickback can momentarily cause the OUT_ voltage to exceed V CC . This is considered part of
normal operation and does not damage the device.
Note 6: Guaranteed by design.
Note 7: For other capacitance values, use the equation t PS = 32 x C.
4
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