BSI
BS62LV4008
KEY TO SWITCHING WAVEFORMS
AC TEST CONDITIONS
(Test Load and Input/Output Reference)
Input Pulse Levels
Vcc / 0V
WAVEFORM
INPUTS
OUTPUTS
MUST BE
STEADY
MUST BE
STEADY
Input Rise and Fall Times
1V/ns
MAY CHANGE
FROM H TO L
WILL BE
CHANGE
FROM H TO L
Input and Output
Timing Reference Level
0.5Vcc
MAY CHANGE
FROM L TO H
WILL BE
CHANGE
FROM L TO H
Output Load
CL = 30pF+1TTL
CL = 100pF+1TTL
,
DON T CARE:
CHANGE :
STATE
UNKNOWN
ANY CHANGE
PERMITTED
DOES NOT
APPLY
CENTER
LINE IS HIGH
IMPEDANCE
”OFF ”STATE
AC ELECTRICAL CHARACTERISTICS ( TA = -40 to + 85oC )
READ CYCLE
JEDEC
PARAMETER
NAME
CYCLE TIME : 70ns
(Vcc = 2.7~3.6V)
MIN. TYP. MAX.
CYCLE TIME : 55ns
(Vcc = 3.0~3.6V)
PARAMETER
DESCRIPTION
Read Cycle Time
UNIT
NAME
MIN.
TYP.
MAX.
tAVAX
tAVQV
tELQV
tGLQV
tELQX
tGLQX
tEHQZ
tGHQZ
tRC
55
--
--
--
70
--
--
--
--
--
--
--
--
--
--
ns
ns
ns
ns
ns
ns
ns
ns
tAA
Address Access Time
--
55
55
30
--
70
70
35
--
tACS
tOE
Chip Select Access Time
--
--
--
Output Enable to Output Valid
Chip Select to Output Low Z
Output Enable to Output in Low Z
Chip Deselect to Output in High Z
Output Disable to Output in High Z
--
--
--
tCLZ
tOLZ
tCHZ
tOHZ
10
10
--
--
10
10
--
--
--
--
--
30
25
35
30
--
--
--
tAXOX
tOH
Data Hold from Address Change
10
--
--
10
--
--
ns
SWITCHING WAVEFORMS (READ CYCLE)
READ CYCLE1 (1,2,4)
t
RC
ADDRESS
t
AA
t
OH
t
OH
D OUT
Revision 1.1
Jan. 2004
R0201-BS62LV4008
4