isl3179e Intersil Corporation, isl3179e Datasheet
isl3179e
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isl3179e Summary of contents
Page 1
... ESD Protected, +125°C, 40Mbps, 3.3V, Full Fail-Safe, RS-485/RS-422 Transceivers ± Intersil’s ISL3179E is a 15kV IEC61000 ESD Protected, 3.3V powered, single transceiver that meets both the RS-485 and RS-422 standards for balanced communication. This device has low bus currents (+220μA/-150μA presents a “ ...
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... Truth Table OUTPUTS B/Z A High-Z High-Z 0 High-Z* High- NOTE: *Shutdown Mode FUNCTION through a 1kΩ or greater resistor. CC ISL3179E SOIC AND MSOP PIN NUMBERS SHOWN + 0.1μ RECEIVING INPUTS OUTPUT DE A-B ≥ -0.05V 0 ≤ -0. Inputs Open/Shorted 1 X High-Z ...
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... ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table Operating Conditions Temperature Range ISL3179EF . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C ISL3179EI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTE: 3. θ ...
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... SKD Receiver Enable to Output High t ZH Receiver Enable to Output Low t ZL Receiver Disable from Output High t HZ Receiver Disable from Output Low ISL3179E = 3.0V to 3.6V; Unless Otherwise Specified. Typicals are TEST CONDITIONS 0.4V ≤ V ≤ 2.4V O -7V ≤ V ≤ 12V ≤ V ≤ ...
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... Parts are 100% tested at +25°C. Over temperature limits established by characterization and are not production tested. Test Circuits and Waveforms FIGURE 1A. V AND ISL3179E = 3.0V to 3.6V; Unless Otherwise Specified. Typicals are TEST CONDITIONS (Note 1kΩ 15pF GND (Figure 6 (Notes 9, 11 1kΩ 15pF (Figure 6), ...
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... ZL t Y/Z 1 (Note 10) ZH(SHDN) t Y/Z 1 (Note 10) ZL(SHDN) FIGURE 3A. TEST CIRCUIT 54Ω SIGNAL GENERATOR FIGURE 4A. TEST CIRCUIT 6 ISL3179E (Continued) DI OUT (Z) OUT ( DIFF OUT ( 110Ω GND 50pF NOTE 9 OUT ( ...
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... The receiver input resistance of 50kΩ surpasses the RS-422 spec of 4kΩ, and is five times the RS-485 “Unit Load” (UL) requirement of 12kΩ minimum. Thus, the ISL3179E is known as a “one-fifth UL” transceiver, and there can 160 devices on the RS-485 bus while still complying with the RS-485 loading spec. The receiver is a “ ...
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... RE) is unable to ensure that the RS-485 Tx and Rx outputs are kept disabled. If the equipment is connected to the bus, a driver activating prematurely during power up may crash the bus. To avoid this scenario, the ISL3179E incorporates a “Hot Plug” function. Circuitry monitoring V ensures that, during power up and power down, the Tx and Rx ...
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... Stubs connecting a transceiver to the main cable should be kept as short as possible. The ISL3179E may also be used at slower data rates over longer cables, but there are some limitations. The Rx is optimized for high speed operation, so its output may glitch if the Rx input differential transition times are too slow ...
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... HIGH -100 - OUTPUT VOLTAGE (V) FIGURE 10. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT VOLTAGE 13.0 12.5 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 -40 - TEMPERATURE (°C) FIGURE 12. DRIVER DIFFERENTIAL PROPAGATION DELAY vs TEMPERATURE 10 ISL3179E V = 3.3V +25°C; Unless Otherwise Specified CC A 2.40 2. 33Ω D 2.30 2.25 2. 54Ω D 2.15 2.10 2. 100Ω D 2.00 1.95 1.90 2.5 3.0 3.3 -40 FIGURE 9. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs 2 ...
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... +125° +85° 0.5 1.0 1.5 2.0 RECEIVER OUTPUT VOLTAGE (V) FIGURE 18. RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 11 ISL3179E V = 3.3V +25°C; Unless Otherwise Specified (Continued 54Ω 50pF FIGURE 15. DRIVER AND RECEIVER WAVEFORMS ...
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... 10. Datums and to be determined at Datum plane . - H - 11. Controlling dimension: MILLIMETER. Converted inch dimen- sions are for reference only. 12 ISL3179E M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE SYMBOL θ ...
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... INDEX AREA (DATUM N (Nd-1)Xe REF. BOTTOM VIEW C L (A1 SECTION "C-C" FOR ODD TERMINAL/SIDE 13 ISL3179E L10.3x3C 0. LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE 2X 0. SYMBOL 0. 0. NOTES: 1. Dimensioning and tolerancing conform to ASME Y14.5-1994. ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 14 ISL3179E M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE ...