HM628512C Series
AC Characteristics
(Ta = –20 to +70°C, V
CC
= 5 V
±
10%, unless otherwise noted.)
Test Conditions
•
Input pulse levels: 0.8 V to 2.4 V
•
Input rise and fall time: 5 ns
•
Input and output timing reference levels: 1.5 V
•
Output load: 1 TTL Gate + C
L
(100 pF) (HM628512C-7)
1 TTL Gate + C
L
(50 pF) (HM628512C-5)
(Including scope & jig)
Read Cycle
HM628512C
-5
Parameter
Read cycle time
Address access time
Chip select access time
Output enable to output valid
Chip selection to output in low-Z
Output enable to output in low-Z
Chip deselection to output in high-Z
Output disable to output in high-Z
Output hold from address change
Symbol
t
RC
t
AA
t
CO
t
OE
t
LZ
t
OLZ
t
HZ
t
OHZ
t
OH
Min
55
—
—
—
10
5
0
0
10
Max
—
55
55
25
—
—
20
20
—
-7
Min
70
—
—
—
10
5
0
0
10
Max
—
70
70
35
—
—
25
25
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
2
2
1, 2
1, 2
Notes
7
HITACHI [ HITACHI SEMICONDUCTOR ]
