DS16F95QML Datasheet, PDF (8/16 Pages) National Semiconductor (TI) – EIA-485/EIA-422A Differential Bus Transceiver

AC - Receiver Electrical Characteristics (Note 10)
The following conditions apply to all parameters, unless otherwise specified.
V_CC = 5V, PRR = 1MH_Z, T_R ≤ T_F ≤ 6nS, 50% duty cycle, AMP = 3V, VL_O, Z_OUT = 50Ω
Symbol Parameter
Conditions
Notes
Min Max Unit
Propagation Delay Time Low to
t_PLH
High Figure 7
C_L = 15pF
10 27 nS
10 38 nS
t_PHL
Propagation Delay Time High C_L = 15pF
to Low Figure 7
10 27 nS
10 38 nS
t_PZH
Output Enable Time to H
C_L = 15pF
Figure 8
20 nS
30 nS
t_PZL
Output Enable Time to L
C_L = 15pF
Figure 8
20 nS
30 nS
|t_PLH - t_PHL| Output to Output Delay Time
Figure 7
8
nS
16 nS
t_PHZ
Output Disable Time From H C_L = 20pF
Figure 8
(Notes 7,
15)
30 nS
(Note 7)
40 nS
C_L = 5pF
(Note 7)
(Note 7)
20 nS
30 nS
t_PLZ
Output Disable Time From L C_L = 5pF
Figure 8
20 nS
30 nS
Sub-group
9
10, 11
9
10, 11
9
10, 11
9
10, 11
9
10, 11
9
10, 11
9
10, 11
9
10, 11
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables of “Electrical Characteristics” provide conditions for actual device operation.
Note 2: Above T_A = 25˚C, derate E package 12.1mW˚C, J package 8.5 mW/˚C, W & WG package 4.8mW/˚C.
Note 3: Human body model, 1.5kΩ in series with 100pF
Note 4: ∆|V_OD| and ∆|V_OC| are the changes in magnitude of V_OD and V_OC, respectively, that occur when the input is changed from a high level to a low level.
Note 5: Negative sign of the limits indicates the direction of the current flow only.
Note 6: R_IN is guaranteed by testing “Line Input Current” (II).
Note 7: Testing at 20pF assures conformance to spec at 5pF.
Note 8: tTD = Non-inverting output rise time + inverting output fall time / 2, Non-inverting output fall time + inverting output rise time / 2.
Note 9: Rise time 20% to 80%, Fall time 80% to 20%.
Note 10: Pre and post irradiation limits are identical to those listed under A C and DC electrical characteristics. These parts may be dose rate sensitive in a space
environment and demonstrate enhanced low dose rate effect. Radiation end point limits for the noted parameters are guaranteed only for the conditions as specified
in MIL-STD 883, Method 1019, condition A.
Parameter Measurement Information
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FIGURE 1. Driver V_OD and V_OC (Note 14)
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FIGURE 2. Receiver V_OH and V_OL
8
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