Datasheet

SN74V263, SN74V273, SN74V283, SN74V293
8192 × 18, 16384 × 18, 32768 × 18, 65536 × 18
3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
SCAS669D – JUNE 2001 – REVISED FEBRUARY 2003
28
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
If FWFT = High, OR = High
If FWFT = Low, EF = Low
If FWFT = Low, FF
= High
If FWFT = High, IR
= Low
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSS
t
RSR
t
RSS
MRS
REN
FWFT/SI
WEN
FSEL0,
FSEL1
RT
SEN
PAE
PAF, HF
EF/OR
FF/IR
OW, IW
BE
RM
PFM
IP
LD
Q0–Qn
OE
= High
OE
= Low
t
RSR
t
RSR
t
RSR
t
RSF
t
RSF
t
RSF
t
RSF
t
RSF
Figure 5. Master Reset Timing