SN75ALS057DWR Datasheet, PDF (9/22 Pages) Texas Instruments – TRAPEZOIDAL-WAVEFORM INTERFACE BUS TRANSCEIVERS

SN75ALS056, SN75ALS057
TRAPEZOIDAL-WAVEFORM INTERFACE BUS TRANSCEIVERS
SLLS028G – AUGUST 1987 – REVISED JUNE 1998
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
FROM
TO
(INPUT) (OUTPUT)
TEST CONDITIONS
tPLH1
Propagation delay time,
low-to-high-level output
TE
tPHL1
Propagation delay time,
high-to-low-level output
tPLH2
tPHL2
Propagation delay time,
low-to-high-level output
Propagation delay time,
high-to-low-level output
Dn or En
tTLH
tTHL
Transition time,
low-to-high-level output
Transition time,
high-to-low-level output
Dn or En
† _{Typical values are at VCC = 5 V, TA = 25°C.}
Dn, En, RE at 2 V, VL = 2 V,
Bn
RL2 not connected, RL1 = 18 Ω,
See Figure 2, CL = 30 pF
TE at 0.8 V, RE at 2 V,
Bn
VL = 2 V, RL1 = 18 Ω,
RL2 not connected,CL = 30 pF,
See Figure 2
RE at 2 V, VL = 2 V,
Bn
TE at 0.8 V, RL1 = 18 Ω,,
RL2 not connected, CL = 30 pF,
See Figure 2
SN75ALS057
DRIVER
MIN TYP† MAX
UNIT
24
ns
20
19
ns
18
1
3
11
ns
1
3
6
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
PARAMETER
FROM
TO
(INPUT) (OUTPUT)
TEST CONDITIONS
tPLH4
Propagation delay time,
low-to-high-level output
Bn
tPHL4
Propagation delay time,
high-to-low-level output
Output disable time
tPLZ2 _{from low level}
RE
tPZL2
Output enable time to
low level
RE
tPHZ2
Output disable time
from high level
RE
Output enable time to
tPZH2 _{high level}
RE
tw(NR)
Receiver noise
rejection pulse duration
Bn
RE at 0.8 V, TE at 2 V, VL = 5 V,
Rn
RL1 = 390 Ω,, RL2 = 1.6 kΩ,, CL = 30 pF,
See Figure 4
Bn at 2 V, TE at 2 V, VL = 5 V,
Rn
CL = 5 pF, RL1 = 390 Ω,
RL2 not connected, See Figure 5
Bn at 2 V, TE at 2 V, VL = 5 V,
Rn
CL = 30 pF, RL1 = 390 Ω, RL2 = 1.6 kΩ,
See Figure 5
Bn at 0.8 V, TE at 2 V, VL = 0,
Rn
CL = 5 pF, RL1 = 390 Ω,
RL2 not connected, See Figure 5
Bn at 0.8 V, TE at 2 V, VL = 0,
Rn
CL = 30 pF, RL1 not connected,
RL2 = 1.6 kΩ, See Figure 5
TE at 2 V, RE at 0.8 V, VL = 0,
Rn
RL1 = 390 Ω, RL2 = 1.6 kΩ, CL = 30 pF,
See Figure 6
SN75ALS057
RECEIVER
MIN MAX
UNIT
18
ns
18
18 ns
15 ns
17 ns
17 ns
3
ns
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