DS16F95A Datasheet, PDF (4/10 Pages) National Semiconductor (TI) – TIA/EIA-485-A (RS-485) Extended Temperature Differential Bus Transceiver

Receiver Switching Characteristics (Note 2)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max Units
t_PLH
Propagation Delay Time,
Low-to-High Level Output
V_IN = 0V to +3.0V C_L = 15 pF,
Figure 6
10
19
50
ns
t_PHL
Propagation Delay Time,
High-to-Low Level Output
10
19
50
ns
t_ZH
Output Enable Time to High Level
C_L = 15 pF,
t_ZL
Output Enable Time to Low Level
Figure 7
t_HZ
Output Disable Time from High Level
C_L = 5.0 pF,
Figure 7
10
75
ns
12
75
ns
12
50
ns
t_LZ
|t_PLH−t_PHL|
Output Disable Time from Low Level
Pulse Width Distortion (SKEW)
Figure 6
12
50
ns
1.0
16
ns
Device Electrical Characteristics (Notes 2, 3)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max
I_CC
Supply Current (Total Package)
No Load,
DE = 2V, RE = 0.8V
All Inputs Open
Outputs Enabled
21.5 28
I_CCX
DE = 0.8V, RE = 2V
16
25
Outputs Disabled
Units
mA
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: Unless otherwise specified min/max limits apply across the -55°C to +180°C temperature range for the DS16F95A. All typical values are given for V_CC
= 5V and T_A = 25°C.
Note 3: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 4: Δ|V_OD| and Δ|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: In TIA/EIA-422-B and TIA/EIA-485-A Standards, V_OC, which is the average of the two output voltages with respect to ground, is called output offset
voltage, V_OS.
Note 6: The algebraic convention, where the less positive (more negative) limit is designated minimum, is used in this data sheet for common mode input voltage
and threshold voltage levels only.
Note 7: Hysteresis is the difference between the positive-going input threshold voltage, V_T+, and the negative-going input threshold voltage, V_T−.
Note 8: Refer to TIA/EIA-485-A Standard for exact conditions.
Note 9: Only one output at a time should be shorted. Do not exceed maximum junction temperature recommendations. This device does not include thermal
shutdown protection.
Note 10: Lifetime expectations for continuous operation at above 150 °C for more than 1000 hours should be verified with National Semiconductor Reliability
Engineering. Reliability report available upon request.
Note 11: ESD Rating information: HBM >5kV A or B pin, all other pins > 1kV. MM > 600V A or B pin, all other pins > 50V, CDM >750V, IEC61000–4–2 (Power
On or Off) > 2kV A or B pin.
Parameter Measurement Information
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30066702
FIGURE 1. Driver V_OD and V_OC (Note 15)
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