AMD
2-39
Am27C256
ABSOLUTE MAXIMUM RATINGS
Storage Temperature
OTP Products
. . . . . . . . . . . . . . .
All Other Products
Ambient Temperature
with Power Applied
. . . . . . . . . . . . .
Voltage with Respect To V
SS
All pins except A9,V
PP
,V
CC
(Note 1)
. . . . . . . . . . . . . . .
A9
and V
PP
(Note 2)
V
CC
. . . . . . . . . . . . . . . . . . . . . . .
–65
°
C to +125
°
C
–65
°
C to +150
°
C
. . . . . . . . . . . .
–55
°
C to +125
°
C
–0.6 V to V
CC
+ 0.5 V
–0.6 V to +13.5 V
. . . . . . . . . .
–0.6 V to +7.0 V
Notes:
1. Minimum DC voltage on input or I/O pins is –0.5 V. During
transitions, the nputs may overshoot V
SS
to –2.0 V for peri-
ods of up to 20 ns. Maximum DC voltage on input andI/O
pins is V
CC
+ 0.5 V which may overshoot to V
CC
+ 2.0 V for
periods up to 20 ns.
2. For A9 and V
PP
the minimum DC input is –0.5 V. During
transitions, A9 and V
PP
may overshoot V
SS
to –2.0 V for
periods of up to 20 ns. A9 and V
PP
must not exceed 13.5 V
for any period of time.
Stresses above those listed under “Absolute Maximum Rat-
ings” may cause permanent damage to the device. This is a
stress rating only; functional operation of the device at these
or any other conditions above those indicated in the opera-
tional sections of this specification is not implied. Exposure of
the device to absolute maximum rating conditions for ex-
tended periods may affect device reliability.
OPERATING RANGES
Commercial (C) Devices
Ambient Temperature (T
A
)
Industrial (I) Devices
Ambient Temperature (T
A
)
Extended Commercial (E) Devices
Ambient Temperature (T
A
)
Supply Read Voltages
V
CC
for Am27C256-XX5
V
CC
for Am27C256-XX0
Operating ranges define those limits between which the func-
tionality of the device is guaranteed.
0
°
C to +70
°
C
. . . . . . .
–40
°
C to +85
°
C
. . . . .
–55
°
C to +125
°
C
. . . .
+4.75 V to +5.25 V
+4.50 V to +5.50 V
. . . . .
. . . . .