28C256T
256K EEPROM (32K x 8-Bit) EEPROM
TABLE 4. 28C256T RECOMMENDED OPERATING CONDITIONS
PARAMETER
SUBGROUPS
SYMBOL
MIN
MAX
UNITS
Supply Voltage
Input Voltage
1
1
1
1
1
1
1
V
4.5
5.5
0.8
VCC +0.3
VCC +1
V
CC
V
-0.31
2.2
CC -0.5
V
V
V
IL
V
IH
V
V
H
Thermal Impedance — Flat Package
Thermal Impedance — DIP Package
Operating Temperature Range
ΘJC
ΘJC
TOPR
--
--
0.87
0.86
125
°C/W
°C/W
°C
-55
1. V min= -1.0V for pulse width < 50 ns.
IL
TABLE 5. 28C256T CAPACITANCE1
(T = 25 °C, f = 1 MHz)
A
PARAMETER
SYMBOL
MIN
MAX
UNITS
Input Capacitance: V = 0V 1
CIN
--
--
6
pF
pF
IN
Output Capacitance: VOUT = 0V 1
COUT
12
1. Guaranteed by design.
TABLE 6. 28C256T DC ELECTRICAL CHARACTERISTICS
(VCC = 5 V ± 10%, TA = -55 TO +125 °C UNLESS OTHERWISE SPECIFIED)
PARAMETER
CONDITIONS
SUBGROUPS
SYMBOL
MIN
MAX
UNITS
Input Leakage Current
Output Leakage Current
Standby VCC Current
V
CC = 5.5 V, V = 5.5 V
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
ILI
--
--
--
--
--
2
2
uA
uA
uA
mA
mA
IN
VCC = 5.5 V,
VOUT = 5.5 V/0.4 V
ILO
CE = V
ICC1
ICC2
ICC3
20
1
CC
CE = V
IH
Operating VCC Current
IOUT = 0 mA Duty = 100%
CC = 5.5 V Cycle = 1 us
15
V
IOUT = 0mA Duty = 100%
CC = 5.5 V Cycle = 150 ns
--
50
V
Input Low Voltage
Input High Voltage
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
V
--
0.8
--
V
V
V
V
V
IL
V
2.2
IH
V
V
CC -0.5
--
H
Output Low Voltage
Output High Voltage
I
LO = 2.1 mA
V
--
0.4
--
OL
IOH = -400 uA
V
2.4
OH
02.18.02 Rev5
All data sheets are subject to change without notice
3
©2001 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
