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PY291A Datasheet, PDF (3/9 Pages) Pyramid Semiconductor Corporation – 2K X 8 REPROGRAMMABLE PROM
PY291A
AC ELECTRICAL CHARACTERISTICS—READ CYCLE
(VCC = 5V ± 10%, All Temperature Ranges)(2)
Symbol
Parameter
tAA
tHZCS1
tACS1
tHZCS2
tACS2
tPU
tPD
Address to Output Valid
Chip Select Inactive to High Z
Chip Select Active to Output Valid
Chip Select Inactive to High Z
Chip Select Active to Output Valid
Chip Select Active to Power-Up
Chip Slect Inactive to Power-Down
-20
-25
-35
-50
Unit
Min Max Min Max Min Max Min Max
20
25
35
50 ns
15
15
20
20 ns
15
15
20
20 ns
22
27
35
45 ns
22
27
35
45 ns
0
0
0
0
ns
22
27
35
45 ns
TIMING WAVEFORM OF READ CYCLE
Notes:
1. Stresses greater than those listed under MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification
is not implied. Exposure to MAXIMUM rating conditions for extended
periods may affect reliability.
2. Extended temperature operation guaranteed with 400 linear feet per
minute of air flow.
3. Transient inputs with VIL and IIL not more negative than –3.0V and
–100mA, respectively, are permissible for pulse widths up to 20 ns.
4. This parameter is sampled and not 100% tested.
Document # EPROM101 REV OR
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