isl81387 Intersil Corporation, isl81387 Datasheet
isl81387
Available stocks
Related parts for isl81387
isl81387 Summary of contents
Page 1
... Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2005, 2007. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL81387, ISL41387 FN6201.3 for Improved Noise OUT ) Eases Operation in Mixed Supply ...
Page 2
... Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Pinouts ISL81387, ISL41387 PART MARKING TEMP. RANGE (°C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 ISL81387 (20 LD SOIC, SSOP) TOP VIEW 20 C1+ ...
Page 3
... Open Open ISL81387, ISL41387 TABLE 2. ISL81387 FUNCTION TABLE RECEIVER OUTPUTS DRIVER OUTPUTS High-Z High-Z High-Z High-Z High-Z High High-Z High High-Z High-Z ...
Page 4
... RS-232 RECEIVING MODE INPUTS ( 485/232 RXEN and/or RXEN Open 0 1 and ISL81387, ISL41387 TABLE 3. ISL41387 FUNCTION TABLE RECEIVER OUTPUTS SLEW SPB N.A. N.A. High-Z High-Z High-Z N.A. N.A. High-Z High-Z ON N.A. N.A. ON ...
Page 5
... RS-232 External capacitor (voltage inverter) is connected to this lead. Not needed in RS-485 Mode. V+ RS-232 Internally generated positive RS-232 transmitter supply (+5.5V). C3 not needed in RS-485 Mode. V- RS-232 Internally generated negative RS-232 transmitter supply (-5.5V). C4 not needed in RS-485 Mode ISL81387, ISL41387 FUNCTION A B forces output Y high. Similarly, a high forces output Y high and output Z low. Similarly, a high forces output Z high ...
Page 6
... C1 C2+ + 0.1µ DEN 8 V 485/232 CC GND 10 NOTE: PINOUT FOR SOIC AND SSOP 6 ISL81387, ISL41387 + 0.1µF 0.1µ 0.1µ 0.1µ ...
Page 7
... Driver Output Short-Circuit Current I DC CHARACTERISTICS - LOGIC PINS (i.e., DRIVER AND CONTROL INPUT PINS) Input High Voltage ISL81387, ISL41387 Thermal Information = +25°C) Thermal Resistance + 0. SOIC Package (Note SSOP Package (Note ...
Page 8
... SHDN232 I SHDN485 ESD CHARACTERISTICS Bus Pins ( Any Mode All Other Pins RS-232 DRIVER and RECEIVER SWITCHING CHARACTERISTICS (485/232 = 0V, ALL VERSIONS AND SPEEDS) Driver Output Transition Region SR Slew Rate 8 ISL81387, ISL41387 = 4.5V to 5.5V 0.1μ 5V +25°C (Note 8). (Continued TEST CONDITIONS ...
Page 9
... Driver Disable from Output High t Driver Enable from Shutdown to t ZL(SHDN) Output Low Driver Enable from Shutdown to t ZH(SHDN) Output High Driver Maximum Data Rate f MAX 9 ISL81387, ISL41387 = 4.5V to 5.5V 0.1μ 5V +25°C (Note 8). (Continued TEST CONDITIONS , 3kΩ, C ...
Page 10
... The Slew pin has a pull-up resistor that enables only when in RS-485 mode (485/232 = V 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. 10 ISL81387, ISL41387 = 4.5V to 5.5V 0.1μF, V ...
Page 11
... Y/Z 0 ZH(SHDN) t Y/Z 0 ZL(SHDN) FIGURE 3A. TEST CIRCUIT FIGURE 3. RS-485 DRIVER ENABLE AND DISABLE TIMES 11 ISL81387, ISL41387 DEN FIGURE 1. RS-485 DRIVER V AND V OD OUT (Z) OUT ( 100pF L DIFF DIFF OUT ( 100pF L SKEW = |t 500Ω ...
Page 12
... FIGURE 5. RS-485 RECEIVER ENABLE AND DISABLE TIMES DEN SIGNAL GENERATOR FIGURE 6A. TEST CIRCUIT RXEN SIGNAL GENERATOR FIGURE 7A. TEST CIRCUIT 12 ISL81387, ISL41387 (Continued) 15pF B R FIGURE 4. RS-485 RECEIVER PROPAGATION DELAY 1kΩ RXEN GND SW 15pF B SW +1.5V GND -1. +1.5V GND -1. ...
Page 13
... RS-485, RS-422 maximum distance of 4000’ (1220m important to note that the ISL81387, ISL41387 don’t follow the RS-485 convention whereby the inverting I/O is labelled “B/Z”, and the non-inverting I/O is “A/Y”. Thus, in the following application diagrams, the 1387 A/Y (B/Z) pins connect to the B/Z (A/Y) pins of the generic RS-485, RS-422 ICs ...
Page 14
... RS-232 doesn’t require anything special for cabling; just a single bus wire per transmitter and receiver, and another wire for GND ISL81387, ISL41387 RS-232 port uses a five conductor cable for interconnection. Bus terminations are not required, nor allowed, by the RS-232 standard. ...
Page 15
... Higher data rates require faster edges, so both the ISL81387, ISL41387 versions offer an edge rate capable of 20Mbps data rates. They both have a second option for 460kbps, but the ISL41387 also offers another, very slew rate limited, edge rate to minimize problems at slow data rates ...
Page 16
... ISL81387, ISL41387 Low Power Shutdown (SHDN) Mode The ISL81387, ISL41387 enter the SHDN mode when and the Tx and Rx are disabled (DEN = 0, RXEN = 0, and RXEN = 1), and the already low supply current drops to as low as 5µA. SHDN disables the Tx and Rx outputs, and disables ...
Page 17
... CC pin. When using RXEN, ensure that RXEN is tied to GND. RS-485 Slew Rate Limited Data Rates ESD The ISL81387, ISL41387 FAST speed option (SLEW = High) DIODE R XD utilizes Tx output transitions optimized for a 20Mbps data rate. These fast edges may increase EMI and reflection issues, even though fast transitions aren’ ...
Page 18
... +85° RECEIVER OUTPUT VOLTAGE (V) FIGURE 13. RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 18 ISL81387, ISL41387 Tx/Rx FIGURE 12. USING ACTIVE LOW vs ACTIVE HIGH 5V +25°C; Unless Otherwise Specified +25° +85° +25° FIGURE 14. RECEIVER HIGH OUTPUT VOLTAGE vs LOGIC 1kΩ ...
Page 19
... OR L 10n RS-485, SLEW, SPB, RXEN = (V) L FIGURE 19. RS-232, V SUPPLY CURRENT (QFN ONLY) 19 ISL81387, ISL41387 5V +25°C; Unless Otherwise Specified. (Continued FIGURE 16. RS-485, DRIVER DIFFERENTIAL OUTPUT FULL TEMP RANGE HIGH ≤ ...
Page 20
... C = 100pF DIFF DHL 30 t DLH 25 20 -40 - TEMPERATURE (°C) FIGURE 25. RS-485, DRIVER PROPAGATION DELAY vs TEMPERATURE (FAST DATA RATE) 20 ISL81387, ISL41387 5V +25°C; Unless Otherwise Specified. (Continued 400 350 300 250 200 150 100 t DHL ...
Page 21
... TIME (10ns/DIV) FIGURE 31. RS-485, DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (FAST DATA RATE) 21 ISL81387, ISL41387 5V +25°C; Unless Otherwise Specified. (Continued 60Ω 100pF FIGURE 28. RS-485, DRIVER AND RECEIVER WAVEFORMS, = 60Ω, C ...
Page 22
... TEMPERATURE (°C) FIGURE 35. RS-232, TRANSMITTER SHORT CIRCUIT CURRENT vs TEMPERATURE C = 1000pF, 1 CHANNEL SWITCHING Y 1μs/DIV. FIGURE 37. RS-232, TRANSMITTER AND RECEIVER WAVEFORMS AT 500kbps 22 ISL81387, ISL41387 5V +25°C; Unless Otherwise Specified. (Continued 7.5 250kbps 5.0 2.5 500kbps 0 -2.5 500kbps -5.0 250kbps -7.5 4000 ...
Page 23
... SLOW 10 1 DOUBLE TERM’ED WITH 121Ω 0.1 32 100 200 300 400 500 600 DATA RATE (kbps) FIGURE 43. RS-485, TRANSMITTER JITTER vs DATA RATE WITH 1000’ CAT-5 CABLE 23 ISL81387, ISL41387 5V +25°C; Unless Otherwise Specified. (Continued 7.5 ≥ V ±4V OUT V 5.0 2 ...
Page 24
... Die Characteristics SUBSTRATE AND QFN THERMAL PAD POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 2490 PROCESS: BiCMOS 24 ISL81387, ISL41387 FN6201.3 November 21, 2007 ...
Page 25
... L40.6x6 40 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 3, 10/06 6.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 25 ISL81387, ISL41387 4X 36X 0. 40X ± BOTTOM VIEW ± SIDE VIEW ( 36X REF ( 40X 0 ...
Page 26
... The lead width “B”, as measured 0.36mm (0.014 inch) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.024 inch) 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. 26 ISL81387, ISL41387 M20.3 (JEDEC MS-013-AC ISSUE C) 20 LEAD WIDE BODY SMALL OUTLINE PLASTIC PACKAGE M M ...
Page 27
... 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 27 ISL81387, ISL41387 M20.209 20 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE M ...