Owner's manual

DS21455/DS21458 Quad T1/E1/J1 Transceivers
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38.2 Nonmultiplexed Bus AC Characteristics
AC CHARACTERISTICS–NONMULTIPLEXED PARALLEL PORT (MUX = 0)
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS21455/DS21458;
V
DD
= 3.3V ±5%, T
A
= -40°C to +85°C for DS21455N/DS21458N.) (See Figure 38-4 to Figure 38-7.)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Setup Time for A0 to A7, Valid to
CS Active
t1 0 ns
Setup Time for CS Active to Either
RD, WR, or DS Active
t2 0 ns
Delay Time from Either RD or DS
Active to Data Valid
t3 75 ns
Hold Time from Either RD, WR,
or DS Inactive to CS Inactive
t4 0 ns
Hold Time from CS Inactive to
Data Bus Tri-State
t5 5 20 ns
Wait Time from Either WR or DS
Activate to Latch Data
t6 75 ns
Data Setup Time to Either WR or
DS Inactive
t7 10 ns
Data Hold Time from Either WR
or DS Inactive
t8 10 ns
Address Hold from Either WR or
DS Inactive
t9 10 ns