AT28HC64B
5. DC and AC Operating Range
AT28HC64B-70
AT28HC64B-90
AT28HC64B-120
Operating Temperature (Case)
V CC Power Supply
-40°C - 85°C
5 V ± 10%
-40°C - 85°C
5 V ± 10%
-40°C - 85°C
5 V ± 10%
6. Operating Modes
Mode
Read
Write (2)
Standby/Write Inhibit
Write Inhibit
Write Inhibit
Output Disable
Chip Erase
CE
V IL
V IL
V IH
X
X
X
V IL
OE
V IL
V IH
X (1)
X
V IL
V IH
V H (3)
WE
V IH
V IL
X
V IH
X
X
V IL
I/O
D OUT
D IN
High Z
High Z
High Z
Notes:
1. X can be VIL or VIH.
2. See “AC Write Waveforms” on page 8.
3. VH = 12.0 V ±0.5 V.
7. Absolute Maximum Ratings*
Temperature Under Bias................................ -55°C to +125°C
Storage Temperature ..................................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground .................................-0.6 V to +6.25 V
All Output Voltages
with Respect to Ground ...........................-0.6 V to V CC + 0.6 V
Voltage on OE and A9
with Respect to Ground ..................................-0.6 V to +13.5V
8. DC Characteristics
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability
100
Symbol
I LI
I LO
I SB1
Parameter
Input Load Current
Output Leakage Current
V CC Standby Current CMOS
Condition
V IN = 0 V to V CC + 1 V
V I/O = 0 V to V CC
CE = V CC - 0.3 V to V CC + 1 V
Min
Max
10
10
(1)
Units
μA
μA
μA
I SB2
V CC Standby Current TTL
CE = 2.0 V to V CC + 1 V
2
(1)
mA
I CC
V IL
V IH
V OL
V OH
V CC Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
f = 5 MHz; I OUT = 0 mA
I OL = 2.1 mA
I OH = -400 μA
2.0
2.4
40
0.8
0.40
mA
V
V
V
V
Note:
1. I SB1 and I SB2 for the 55 ns part is 40 mA maximum.
5
0274L–PEEPR–2/3/09
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