Switching Characteristics (Continued)
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 3 and 8)
Symbol | Parameter | Conditions | Reference | Min | Typ | Max | Units |
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RECEIVER CHARACTERISTICS |
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tPHL | Propagation Delay | CL e 15 pF |
| 30 | 210 | 400 | ns |
| High to Low |
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| Figures 12, 13 |
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tPLH | Propagation Delay |
| 30 | 190 | 400 | ns | |
| Low to High |
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tSK | Skew, ltPHL b tPLHl |
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| 0 | 20 | 50 | ns |
tPLZ | Output Disable Time | CL e 15 pF |
| — | 50 | 150 | ns |
tPHZ |
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| Figures 14, 15, 16 | — | 55 | 150 | ns |
tPZL | Output Enable Time |
| — | 40 | 150 | ns | |
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tPZH |
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| — | 45 | 150 | ns |
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 table of ‘‘Electrical Characteristics’’ specifies conditions of device operation.
Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except VOD1 and VOD2.
Note 3: All typicals are given for: VCC e a5.0V, TA e a 25§C.
Note 4: Delta lVOD2l and Delta lVOCl are changes in magnitude of VOD2 and VOC, respectively, that occur when input changes state.
Note 5: Threshold parameter limits specified as an algebraic value rather than by magnitude.
Note 6: Hysteresis defined as VHST e VTH b VTL.
Note 7: IIN includes the receiver input current and driver
Note 8: CL includes probe and jig capacitance.
Note 9: For complete details of test, see
Parameter Measurement Information
TL/F/12040 – 18
TL/F/12040 – 2 | FIGURE 2. Driver VOD3 | |
FIGURE 1. Driver VOD2 and VOC | ||
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| TL/F/12040 – 3 | TL/F/12040 – 4 |
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FIGURE 3. Driver VOH and VOL |
| Vtest e b7V to a12V |
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| FIGURE 4. Driver IOSD |
TL/F/12040 – 5
| FIGURE 5. Driver Differential Propagation Delay Test Circuit |
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http://www.national.com | 4 |