
Programmable Four-Channel Communications Controller
—
CD2481
Datasheet
203
10.4
Absolute Maximum Ratings (
Revisions B and D at 60 MHz
)
Operating ambient temperature (T
A
)..................................................... 0
°
C to 70
°
C
Storage temperature........................................................................
65
°
C to 150
°
C
All voltages with respect to ground...........................
0.5 V to V
CC
+
0.5 V (volts)
Supply voltage (V
CC
)....................................................................................
+
7.0 V
Power dissipation................................................................................ 0.72 W (watt)
Note:
Stresses above those listed under Absolute Maximum Ratings can cause permanent damage to the
device. These are stress ratings only and functional operation of the device at these or any
conditions above those indicated in the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect device reliability.
t
46
t
47
t
48
t
49
t
50
t
51
t
52
t
53
t
54
t
55
Data setup time to CLK high
5
Data hold time after CLK high
15
Address setup time to CLK high
5
Address hold time after CLK high
15
CLK high to DTACK* low (read cycle)
20
CLK high to DTACK* low (write cycle)
20
(CS* and DS*) low to DATEN*/DATDIR* low
25
DS* high to DATEN*/DATDIR* tristate
25
DS* high to data bus tristate
25
DS* high to DTACK* high-impedance
25
Interrupt Acknowledge
t
61
t
63
t
64
t
65
t
66
CLK high to IACKIN*, DS* setup
17
CLK high to data valid
25
Address setup to IACKIN* low
0
Address hold after IACKIN* high
0
CLK high to DTACK* low
20
t
67
(IACKIN* and DS*) low and BUSCLK high to
DATEN* and DATDIR* low
40
1.This timing assumes the following conditions: BGACK* high, DTACK* high, DS* high, and BUSCLK high.
Symbol
Parameter
(Sheet 2 of 2)
MIN
MAX