Rainbow Electronics DS1254 - Manual (Page 8)

DS1254
8 of 17
CAPACITANCE (T
A
= +25
°
C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance: A0–A18,
OE , WE , CE
C
IN
25 50 pF
Input Capacitance: A19–A20 C
IN
5 10 pF
I/O Capacitance: DQ0–DQ7 C
IO
25 50 pF
Output Capacitance: BW
C
OUT
5 10 pF
AC ELECTRICAL CHARACTERISTICS (0 ° C to +70 ° C; V
CC
= 5.0V
±
10%)
PARAMETER SYMBOL MIN MAX UNITS NOTES
Read Cycle Time t
RC
100 nS
Address Access Time t
AAC
100 nS
OE to Output Valid
t
OE
55 nS
CE to Output Valid
t
CO
100 nS
CE or OE to Output Active
t
COE
5 nS 2
Output High- Z from Deselection t
OD
35 nS 2
Output Hold from Address Change t
OH
5 nS
Write Cycle Time t
WC
100 nS
WE , CE Pulse Width
t
WP
70 nS 5
Address Setup Time t
AW
0 nS
t
AH1
5 nS 6 Address Hold Time
t
AH2
25 nS 7
Output High- Z from WE
t
ODW
35 nS 2
Output Active from WE
t
OEW
5 nS 2
Data Setup Time t
DS
40 nS 8
t
DH1
0 nS 6 Data Hold Time
t
DH2
20 nS 8
Read Recovery
(Clock Access Only)
t
RR
20 nS
Write Recovery
(Clock Access Only)
t
WR
20 nS