
MAX6920
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V
BB
= 8V to 76V, V
CC
= 3V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Rise Time OUT_ (20% to 80%) t
R
V
BB
= 60V, C
L
= 50pF, R
L
= 2.3kΩ 0.9 2 µs
Fall Time OUT_ (80% to 20%) t
F
V
BB
= 60V, C
L
= 50pF, R
L
= 2.3kΩ 0.6 1.5 µs
SERIAL INTERFACE TIMING CHARACTERISTICS
LOAD Rising to OUT_ Falling
Delay
(Notes 2, 3) 0.9 1.8 µs
LOAD Rising to OUT_ Rising
Delay
(Notes 2, 3) 1.2 2.4 µs
BLANK Rising to OUT_ Falling
Delay
(Notes 2, 3) 0.9 1.8 µs
BLANK Falling to OUT_ Rising
Delay
(Notes 2, 3) 1.3 2.5 µs
Input Leakage Current
CLK, DIN, LOAD, BLANK
I
IH
, I
IL
0.05 10 µA
Logic-High Input Voltage
CLK, DIN, LOAD, BLANK
V
IH
0.8 x
V
CC
V
Logic-Low Input Voltage
CLK, DIN, LOAD, BLANK
V
IL
0.3 x
V
CC
V
Hysteresis Voltage
DIN, CLK, LOAD, BLANK
∆V
I
0.6 V
High-Voltage DOUT V
OH
I
SOURCE
= -1.0mA
V
CC
-
0.5
V
Low-Voltage DOUT V
OL
I
SINK
= 1.0mA 0.5 V
3V to 4.5V 60 100
Rise and Fall Time DOUT
C
DOUT
= 10pF
(Note 2)
4.5V to 5.5V 30 80
ns
CLK Clock Period t
CP
200 ns
CLK Pulse-Width High t
CH
90 ns
CLK Pulse-Width Low t
CL
90 ns
CLK Rise to LOAD Rise Hold
t
CSH
(Note 2) 100 ns
DIN Setup Time t
DS
5ns
3V to 4.5V 20
DIN Hold Time t
DH
4.5V to 5.5V 15
ns
3.0V to 4.5V 25 120 240
DOUT Propagation Delay t
DO
C
DOUT
= 10pF
4.5V to 5.5V 20 75 150
ns
LOAD Pulse High t
CSW
55 ns
Note 1: All parameters are tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 2: Guaranteed by design.
Note 3: Delay measured from control edge to when output OUT_ changes by 1V.
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