DS26502 Maxim Integrated Products, DS26502 Datasheet - Page 111

• Manufacturer Part Number: DS26502
• Description: T1/E1/J1/64KCC BITS Element
• Manufacturer: Maxim Integrated Products

20. AC TIMING PARAMETERS AND DIAGRAMS
Capacitive test loads are 40pF for bus signals and 20pF for all others.
20.1 Multiplexed Bus
Table 20-1. AC Characteristics, Multiplexed Parallel Port
(V
DS26502LN.)
Cycle Time
Pulse Width, DS Low or RD High
Pulse Width, DS High or RD Low
Input Rise/Fall Times
R/W Hold Time
R/W Setup Time Before DS High
CS Setup Time Before DS, WR, or
RD Active
CS Hold Time
Read Data Hold Time
Write Data Hold Time
Muxed Address Valid to AS or
ALE Fall
Muxed Address Hold Time
Delay Time DS, WR, or RD to AS
or ALE Rise
Pulse Width AS or ALE High
Delay Time, AS or ALE to DS,
WR, or RD
Output Data Delay Time from DS
or RD
Data Setup Time
DD
= 3.3V ±5%, T
PARAMETER
A
= 0°C to +70°C for DS26502L; V
SYMBOL
PW
PW
PW
t
t
t
t
t
t
t
t
t
t
t
t
ASED
R
DHW
RWH
RWS
t
DSW
CYC
t
DHR
AHL
DDR
ASL
ASD
CH
CS
, t
ASH
EL
EH
F
111 of 124
www.DataSheet4U.com
MIN
200
100
100
10
50
20
10
15
10
20
30
10
50
0
5
DD
= 3.3V ±5%, T
TYP
DS26502 T1/E1/J1/64KCC BITS Element
MAX
20
50
80
A
= -40°C to +85°C for
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES