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ISL41387 датащи(PDF) 10 Page - Intersil Corporation |
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ISL41387 датащи(HTML) 10 Page - Intersil Corporation |
10 / 27 page 10 FN6201.3 November 21, 2007 RS-485 DRIVER SWITCHING CHARACTERISTICS (SLOW DATA RATE (115kbps, QFN ONLY), 485/232 = VCC, SLEW = SPB = GND) Driver Differential Input to Output Delay tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 2) Full 800 1500 2500 ns Driver Output Skew tSKEW RDIFF = 54Ω, CL = 100pF (Figure 2) Full - 350 1250 ns Driver Differential Rise or Fall Time tR, tF RDIFF = 54Ω, CL = 100pF (Figure 2) Full 1000 2000 3100 ns Driver Enable to Output Low tZL CL = 100pF, SW = VCC (Figure 3) Full - 32 600 ns Driver Enable to Output High tZH CL = 100pF, SW = GND (Figure 3) Full - 300 600 ns Driver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure 3) Full - 31 60 ns Driver Disable from Output High tHZ CL = 15pF, SW = GND (Figure 3) Full - 24 60 ns Driver Enable from Shutdown to Output Low tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC (Figure 3) (Note 14) Full - 65 800 ns Driver Enable from Shutdown to Output High tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND (Figure 3) (Note 14) Full - 420 800 ns Driver Maximum Data Rate fMAX RDIFF = 54Ω, CL = 100pF (Figure 2) Full - 800 - kbps RS-485 RECEIVER SWITCHING CHARACTERISTICS (485/232 = VCC, ALL VERSIONS AND SPEEDS) Receiver Input to Output Delay tPLH, tPHL (Figure 4) Full 20 50 90 ns Receiver Skew | tPLH - tPHL |tSKEW (Figure 4) Full - 3 10 ns Receiver Maximum Data Rate fMAX Full - 40 - Mbps RECEIVER ENABLE/DISABLE CHARACTERISTICS (ALL MODES AND VERSIONS AND SPEEDS) Receiver Enable to Output Low tZL CL = 15pF, SW = VCC (Figure 5) Full - 22 60 ns Receiver Enable to Output High tZH CL = 15pF, SW = GND (Figure 5) Full - 23 60 ns Receiver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure 5) Full - 24 60 ns Receiver Disable from Output High tHZ CL = 15pF, SW = GND (Figure 5) Full - 25 60 ns Receiver Enable from Shutdown to Output Low tZLSHDN CL = 15pF, SW = VCC (Figure 5) (Note 14) RS-485 Mode Full - 260 700 ns RS-232 Mode 25 - 35 - ns Receiver Enable from Shutdown to Output High tZHSHDN CL = 15pF, SW = GND (Figure 5) (Note 14) RS-485 Mode Full - 260 700 ns RS-232 Mode 25 - 25 - ns NOTES: 8. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. 9. Supply current specification is valid for loaded drivers when DEN = 0V. 10. Applies to peak current. See “Typical Performance Curves” beginning on page 18 for more information. 11. RIN defaults to RS-485 mode (>15kΩ) when the device is unpowered (VCC = 0V), or in SHDN, regardless of the state of the 485/232 pin. 12. VCC ≤ 5.25V. 13. The Slew pin has a pull-up resistor that enables only when in RS-485 mode (485/232 = VCC). 14. ON, RXEN, and DEN all simultaneously switched Low-to-High. 15. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested. Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V, C1 - C4 = 0.1μF, VL = VCC (for QFN only), Unless Otherwise Specified. Typicals are at VCC = 5V, TA = +25°C (Note 8). (Continued) PARAMETER SYMBOL TEST CONDITIONS TEMP (°C) MIN (Note 15) TYP MAX (Note 15) UNITS ISL81387, ISL41387 |
Аналогичный номер детали - ISL41387 |
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Аналогичное описание - ISL41387 |
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