27C256T
256K (32K x 8-Bit) OTP EPROM
1 2
TABLE 7. 27C256T AC ELECTRICAL CHARACTERISTICS FOR READ OPERATION ,
(VCC = 5V + 10%, V = V TO V , T = -55 TO +125 °C, UNLESS OTHERWISE SPECIFIED)
PP
SS
CC
A
PARAMETER
TEST CONDITION
SYMBOL SUBGROUPS
MIN
MAX
UNIT
ns
Address Access Time
CE = OE = V
tACC
tCE
tOE
tOH
tDF
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
IL
-120
-150
-200
--
--
--
120
150
200
Chip Enable Access Time
OE = V
IL
-120
-150
-200
--
--
--
120
150
200
ns
ns
ns
ns
Output Enable Access Time
CE = V
IL
-120
-150
-200
--
--
--
60
70
70
Output Hold to Address Change
CE = V
IL
-120
-150
-200
0
0
0
--
--
--
3
Output Disable to High-Z
CE = OE = V
IL
-120
-150
-200
0
0
0
50
50
50
1. tDF is defined as the time at which the output becomes an open circuit and data is no longer driven.
2. AC electrical parameters for programming operations are not tested. These are guaranteed by design.
3. Test conditions:
- Input pulse levels
0.45V/2.4V
- Input rise and fall times
- Output load
- Referenced levels for measuring timing
< 10 ns
1TTL Fate + 100 pF (including scope and jig)
0.8V/2.0V
06.24.03 REV 4
All data sheets are subject to change without notice
4
©2003 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
