dp8421a National Semiconductor Corporation, dp8421a Datasheet - Page 41

• Manufacturer Part Number: dp8421a
• Description: Microcmos Programmable 256k/1m/4m Dynamic Ram Controller/drivers
• Manufacturer: National Semiconductor Corporation

Symbol
V
V
V
V
V
V
I
I
I
I
I
I
I
I
C
IN
IL ML
CC1
CC1
CC1
CC2
CC2
CC2
11 0 Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Temperature under Bias
Storage Temperature
12 0 DC Electrical Characteristics
IH
IL
OH1
OL1
OH2
OL2
IN
C
IN
is not 100% tested
Logical 1 Input Voltage
Logical 0 Input Voltage
Q and WE Outputs
Q and WE Outputs
All Outputs except Qs WE
All Outputs except Qs WE
Input Leakage Current
ML Input Current (Low)
Standby Current
Standby Current
Standby Current
Supply Current
Supply Current
Supply Current
Input Capacitance
Parameter
b
Tested with a Limited
Functional Pattern
Tested with a Limited
Functional Pattern
I
I
I
I
V
V
CLK at 8 MHz (V
CLK at 20 MHz (V
CLK at 25 MHz (V
CLK at 8 MHz (Inputs Active)
(I
CLK at 20 MHz (Inputs Active)
(I
CLK at 25 MHz (Inputs Active)
(I
f
65 C to
OH
OL
OH
OL
IN
IN
IN
LOAD
LOAD
LOAD
0 C to
at 1 MHz
e
e
e
e
e b
e b
10 mA
3 mA
V
GND
e
e
e
CC
a
10 mA
3 mA
a
0) (V
0) (V
0) (V
150 C
or GND
(Note 1)
70 C
Conditions
T
IN
IN
IN
A
IN
e
e
e
e
IN
IN
e
41
0 C to
V
V
V
e
e
CC
CC
CC
V
V
V
CC
All Input or Output Voltage
Power Dissipation
ESD Rating to be determined
CC
CC
or GND)
or GND)
or GND)
or GND)
with Respect to GND
a
or GND)
or GND)
70 C V
CC
e
V
V
CC
CC
5V
b
b
Min
2 0
b
b
20 MHz
0 5
10
g
10% GND
1 0
1 0
Typ
10
20
40
50
6
8
e
0V
V
CC
Max
200
0 8
0 5
0 5
10
15
17
20
40
75
95
10
a
b
0 5V to
0 5
0 5W
a
Units
mA
mA
mA
mA
mA
mA
mA
mA
pF
7V
V
V
V
V
V
V