AM27C256-120DCB AMD [Advanced Micro Devices], AM27C256-120DCB Datasheet - Page 10

• Manufacturer Part Number: AM27C256-120DCB
• Description: 256 Kilobit (32 K x 8-Bit) CMOS EPRO
• Manufacturer: AMD [Advanced Micro Devices]

AC CHARACTERISTICS
Caution: Do not remove the device from (or insert it into) a socket or board that has V
Notes:
1. V
2. This parameter is sampled and not 100% tested.
3. Switching characteristics are over operating range, unless otherwise specified.
4. See Figure 3 and Table 1 for test specifications.
SWITCHING WAVEFORMS
Notes:
1. OE# may be delayed up to t
2. t
PACKAGE CAPACITANCE
Notes:
1. This parameter is only sampled and not 100% tested.
2. T
10
Parameter Symbols
JEDEC
t
t
t
t
t
t
GHQZ
AVQV
ELQV
GLQV
EHQZ
AXQX
Parameter Symbol
DF
A
CC
Addresses
= +25 C, f = 1 MHz.
is specified from OE# or ‘CE#, whichever occurs first.
must be applied simultaneously or before V
Output
C
C
Standard
OE#
0.45
CE#
OUT
(Note 2)
IN
2.4
t
t
t
ACC
t
t
OE
OH
CE
DF
Address to Output Delay
Chip Enable to Output Delay
Output Enable to Output
Delay
Chip Enable High or Output
Enable High to Output High Z,
Whichever Occurs First
Output Hold Time from
Addresses, CE# or OE#,
Whichever Occurs First
Input Capacitance
Output Capacitance V
High Z
Description
ACC
Parameter
Description
– t
OE
2.0
0.8
after the falling edge of the addresses without impact on t
(Note 1)
Test Conditions
V
OUT
IN
PP
t
ACC
= 0
, and removed simultaneously or after V
t
CE#,
OE# = V
OE# = V
CE# = V
= 0
CE
Test Setup
Am27C256
t
Addresses Valid
OE
IL
IL
IL
Max
Max
Max
Max
Min
Typ
-45
45
45
30
25
8
8
CDV028
0
Valid Output
-55
55
55
35
25
Max
0
12
12
-70
70
70
40
25
PP
0
Typ
or V
t
8
8
OH
Am27C256
PL 032
-90 -120 -150 -200 -255
90
90
40
25
0
CC
PP
2.0
0.8
.
Max
applied.
12
12
120
120
50
30
0
ACC
.
150
150
t
50
30
Typ
DF
0
6
8
PD 028
(Note 2)
200
200
50
30
0
Max
10
10
High Z
250
250
50
30
0
08007I-9
Unit
pF
pF
Unit
ns
ns
ns
ns
ns