CD2481 Datasheet, PDF (203/222 Pages) Intel Corporation – Programmable Four-Channel Communications Controller

Programmable Four-Channel Communications Controller — CD2481
Symbol
Parameter (Sheet 2 of 2)
MIN
t₄₆
Data setup time to CLK high
5
t₄₇
Data hold time after CLK high
15
t₄₈
Address setup time to CLK high
5
t₄₉
Address hold time after CLK high
15
t₅₀
CLK high to DTACK* low (read cycle)
t₅₁
CLK high to DTACK* low (write cycle)
t₅₂
(CS* and DS*) low to DATEN*/DATDIR* low
t₅₃
DS* high to DATEN*/DATDIR* tristate
t₅₄
DS* high to data bus tristate
t₅₅
DS* high to DTACK* high-impedance
Interrupt Acknowledge
t₆₁
CLK high to IACKIN*, DS* setup
17
t₆₃
CLK high to data valid
t₆₄
Address setup to IACKIN* low
0
t₆₅
Address hold after IACKIN* high
0
t₆₆
CLK high to DTACK* low
t₆₇
(IACKIN* and DS*) low and BUSCLK high to
DATEN* and DATDIR* low
1.This timing assumes the following conditions: BGACK* high, DTACK* high, DS* high, and BUSCLK high.
MAX
20
20
25
25
25
25
25
20
40
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.
Datasheet
203