Datasheet

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SLLS102B − DECEMBER 1990 − REVISED MARCH 1996
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
receiver switching characteristics over recommended ranges of operating free-air temperature
and supply voltage (see Figures 9, 10, 11, 12 and 13)
PARAMETER TEST CONDITIONS MIN MAX UNIT
t
d9
Delay time from stop to INT high See Note 7 1
RCLK
cycle
t
pd5
Propagation delay time from RCLK high to sample CLK high 100 ns
t
pd6
Propagation delay time from IOR (RD RBR/RD LSR) high to reset interrupt low C
L
= 100 pF 150 ns
t
pd7
Propagation delay time from IOR (RD RBR) low to RXRDY high 150 ns
NOTE 7: The receiver data available indication, the overrun error indication, the trigger level interrupts and the active RXRDY indication is delayed
three RCLK cycles in the FIFO mode (FCR0 = 1). After the first byte has been received, status indicators (PE, FE, BI) is delayed three
RCLK cycles. These indicators are updated immediately for any further bytes received after RD RBR goes active. There are eight RCLK
cycle delays for trigger change level interrupts.
modem control switching characteristics over recommended ranges of operating free-air
temperature and supply voltage (see Figure 14)
PARAMETER TEST CONDITIONS MIN MAX UNIT
t
pd8
Propagation delay time from IOW (WR MCR) high to RTS (DTR) low/high C
L
= 100 pF 100 ns
t
pd9
Propagation delay time from modem input (CTS, DSR) low/high to interrupt high C
L
= 100 pF 170 ns
t
pd10
Propagation delay time from IOR (RD MSR) high to interrupt low C
L
= 100 pF 140 ns
t
pd11
Propagation delay time from RI high to interrupt high C
L
= 100 pF 170 ns
parallel port timing requirements over recommended ranges of supply voltage and operating
free-air temperature (see Figure 15)
MIN MAX UNIT
t
su7
Setup time, data valid before STB low 1 µs
t
h6
Hold time, data valid after STB high 1 µs
t
w6
Pulse duration, STB low 1 500 µs
t
d10
Delay time, BUSY high to ACK low Defined by printer
t
d11
Delay time, BUSY low to ACK low Defined by printer
t
w6
Pulse duration, ACK low Defined by printer
t
w7
Pulse duration, BUSY high Defined by printer
t
d12
Delay time, BUSY high after STB high Defined by printer