smj27c256 Austin Semiconductor, Inc., smj27c256 Datasheet - Page 6

• Manufacturer Part Number: smj27c256
• Description: 256k Uveprom Semiconductor
• Manufacturer: Austin Semiconductor, Inc.

CAPACITANCE OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE AND OPERATING
FREE-AIR TEMPERATURE, f = 1MHz*
* Capacitance measurements are made on a sample basis only.
** Typical values are at T
SWITCHING CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY VOLTAGE
AND OPERATING FREE-AIR TEMPERATURE
NOTES:
1.Timing measurements are made at 2V for logic high and 0.8V for logic low (see figure 2).
2. Common test conditions apply for t
3. Value calculated from 0.5V delta to measured output level. This parameter is only sampled and not 100% tested.
SWITCHING CHARACTERISTICS FOR PROGRAMMING: V
Pulse), T
t
t
t
en(G)W
en(G)R
t
en(G)R
t
t
t
dis(G)
t
t
t
t
a(A)
a(E)
v(A)
a(A)
a(E)
t
v(A)
dis
dis
C
C
o
i
Access time from address
Access time from E\
Output enable time from G\
Disable time of output from G\ or E\,
whichever occurs first
Output data valid time after change of
address, E\, or G\, whichever occurs first
PARAMETER
Access time from address
Access time from E\
Output enable time from G\
Disable time of output from G\ or E\,
whichever occurs first
Output data valid time after change of
address, E\, or G\, whichever occurs first
Output disable time from G\
Output enable time from G\
A
Input capacitance
Output capacitance
PARAMETER
= 25°C
PARAMETER
A
PARAMETER
= 25°C and nominal voltages.
dis
except during programming.
3
3
TEST CONDITIONS
V
V
O
I
MIN
= 0V
= 0V
0
3
3
CONDITIONS
MAX
130
150
see Figure 2
CONDITIONS
1,2
TYP**
TEST
see Figure 2
10
6
TEST
UNIT
1, 2
ns
ns
MAX
1, 2
MIN MAX MIN MAX MIN MAX
10
14
0
0
-20
CC
MIN MAX MIN MAX
0
0
200
200
= 6.5V and V
75
60
-15
UNIT
150
150
pF
pF
70
55
0
0
-25
UVEPROM
250
250
100
0
0
60
-17
SMJ27C256
PP
170
170
70
55
= 13V (SNAP!
0
0
-30
300
300
120
105
UNIT
ns
ns
ns
ns
ns
UNIT
ns
ns
ns
ns
ns