DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
20.2. Nonmultiplexed Bus AC Characteristics
AC CHARACTERISTICS—NONMULTIPLEXED PARALLEL PORT (MUX = 0)
(VDD = 3.3V M5%, TA = 0°C to +70°C; for DS21354L; VDD = 5.0V M5%, TA = 0°C to +70°C for DS21554L;
VDD = 3.3V M5%, TA = -40°C to +85°C for DS21354LN; VDD = 5.0V M5%, TA = -40LC to +85LC for DS21554LN.)
(See Figure 20-4 to Figure 20-7.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Setup Time for A0 to A7, Valid to
t1
0
ns
CS Active
Setup Time for CS Active to Either
t2
t3
t4
t5
t6
t7
t8
t9
0
ns
ns
ns
ns
ns
ns
ns
ns
RD, WR, or DS Active
Delay Time from Either RD or DS
75
20
Active to Data Valid
Hold Time from Either RD, WR, or
0
DS Inactive to CS Inactive
Hold Time from CS Inactive to Data
5
Bus Tri-State
Wait Time from Either WR or DS
75
10
10
10
Active to Latch Data
Data Setup Time to Either WR or
DS Inactive
Data Hold Time from Either WR or
DS Inactive
Address Hold from Either WR or DS
Inactive
Figure 20-4. Intel Bus Read AC Timing (BTS = 0/MUX = 0)
ADDRESS VALID
A0–A7
D0–D7
DATA VALID
5ns MIN/20ns MAX
t5
WR
CS
RD
t1
0ns MIN
0ns MIN
t2
t3
t4
0ns MIN
75ns MAX
115 of 124
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
