mc14489b Freescale Semiconductor, Inc, mc14489b Datasheet - Page 4

• Manufacturer Part Number: mc14489b
• Description: Multy-character Led Display/lamp Driver
• Manufacturer: Freescale Semiconductor, Inc

* See Thermal Considerations section.
MC14489B
4
AC ELECTRICAL CHARACTERISTICS
TIMING REQUIREMENTS
** For a high–speed 8–Clock access, t h for Enable is determined as follows:
* See Thermal Considerations section.
Symbol
Symbol
t su , t h ,
where t h is in ns and f clk is in MHz.
NOTES:
t su , t h
t PLH ,
t TLH ,
t w(H)
t PHL
t THL
t w(L)
t r , t f
t rec
f clk
C in
f R
t w
V DD = 3 to 4.5 V, f clk > 1.78 MHz: t h = 4350 – (7500/f clk )
V DD = 4.5 to 5.5 V, f clk > 2.34 MHz: t h = 3300 – (7500/f clk )
1. This restriction does NOT apply for f clk rates less than those listed above. For “slow” f clk rates, use the t h limits in the above table.
2. This restriction does NOT apply for an access involving more than 8 Clocks. For > 8 Clocks, use the t h limits in the above table.
Serial Data Clock Frequency, Single Device or Cascaded Devices
NOTE: Refer to Clock t w below
Maximum Propagation Delay, Clock to Data Out
Maximum Output Transistion Time, Data Out
Refresh Rate — Bank 1 through Bank 5
Maximum Input Capacitance — Data In, Clock, Enable
Minimum Setup and Hold Times, Data In versus Clock
Minimum Setup, Hold, ** and Recovery Times, Enable versus Clock
Minimum Active–Low Pulse Width, Enable
Minimum Inactive–High Pulse Width, Enable
Minimum Pulse Width, Clock
Maximum Input Rise and Fall Times — Data In, Clock, Enable
(Figure 1)
(Figures 1 and 5)
(Figures 1 and 5)
(Figures 2 and 6)
(Figure 3)
(Figure 4)
(Figure 4)
(Figure 4)
(Figure 1)
(Figure 1)
(T J = – 40 to 130 C*, Input t r = t f = 10 ns unless otherwise indicated
(T J = – 40 to 130 C*, C L = 50 pF, Input t r = t f = 10 ns)
Parameter
Parameter
)
V DD
V DD
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
—
V
V
Guaranteed
Guaranteed
700 to 1900
700 to 1900
dc to 3.0
dc to 4.0
dc to 4.0
Limit
Limit
140
150
100
100
300
150
150
167
125
125
NA
4.5
3.4
3.4
80
80
70
50
50
10
50
40
40
1
1
1
MOTOROLA
MHz
Unit
Unit
ms
Hz
pF
ns
ns
ns
ns
ns
ns
s