MAX349 Maxim, MAX349 Datasheet - Page 4

• Manufacturer Part Number: MAX349
• Description: The MAX349/MAX350 are 8-channel and dual 4-channel serially controlled multiplexers (muxes)
• Manufacturer: Maxim

Serially Controlled, Low-Voltage,
8-Channel/Dual 4-Channel Multiplexers
TIMING CHARACTERISTICS—Dual Supplies (Figure 1)
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T
Note 1: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 2: ∆R
Note 3: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at room temp.
Note 4: Guaranteed by design.
Note 5: Leakage testing at single supply is guaranteed by testing with dual supplies.
Note 6: See Figure 6. Off-isolation = 20log
Note 7: Between any two switches. See Figure 3.
4
SERIAL DIGITAL INTERFACE
SCLK Frequency
Cycle Time
CS Lead Time
CS Lag Time
SCLK High Time
SCLK Low Time
Minimum Data Setup Time
Data Hold Time
DIN Data Valid after Falling SCLK
(Note 4)
Rise Time of DOUT (Note 4)
Allowable Rise Time at DIN, SCLK
(Note 4)
Fall Time of DOUT (Note 4)
Allowable Fall Time at DIN, SCLK
(Note 4)
RESET Minimum Pulse Width
_______________________________________________________________________________________
specified voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as
measured over the specified analog signal range.
PARAMETER
ON
= R
ON(max)
- R
ON(min)
. On-resistance match between channels and on-resistance flatness are guaranteed only with
SYMBOL
t
CH
f
t
CSH2
t
SCLK
t
t
t
t
CSS
t
t
t
t
t
SCR
t
SCF
CH
DH
DO
RW
CL
DS
DR
DF
+ t
10
A
= T
CL
V
COM
MIN
50% of SCLK to 10% of DOUT,
C
20% of V+ to 70% of V+,
C
20% of V+ to 70% of V+,
C
20% of V+ to 70% of V+,
C
20% of V+ to 70% of V+,
C
/V
L
L
L
L
L
to T
NO
= 10pF
= 10pF
= 10pF
= 10pF
= 10pF
, V
MAX
COM
, unless otherwise noted. Typical values are at T
= output. NO = input to off switch.
CONDITIONS
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
C, E, M
T
T
A
A
= +25°C
= +25°C
MIN
480
240
240
190
190
0
0
(Note 1)
A
TYP
-17
17
85
70
= +25°C.)
MAX
100
400
100
100
2.1
2
2
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
µs
ns