ISL81485 ® Data Sheet July 2004 FN6061.1 5V, 30Mbps, RS-485/RS-422 Transceiver Features The Intersil ISL81485 is a BiCMOS, 5V powered, single transceiver that meets both the RS-485 and RS-422 standards for balanced communication, and features a larger output voltage and higher data rate to benefit high speed applications. • Specified for 10% Tolerance Supplies Unlike competitive devices, this Intersil transceiver is specified for 10% tolerance supplies (4.5V to 5.5V), and it delivers a much larger worst case differential output voltage (2.0V compared to the typical 1.5V) over the full supply range. The increased output voltage translates into longer reach, or better data integrity, at the 30Mbps data rate. • One Unit Load Allows up to 32 Devices on the Bus This device presents a “1 unit load” to the RS-485 bus, which allows up to 32 transceivers on the network. • High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 30Mbps • Large Differential Output Voltage . . . . 2.0V(min.) into 54Ω • Drop-In Replacement for the ADM1485 • Low Quiescent Current . . . . . . . . . . . . . . . . . . . . . 800µA • -7V to +12V Common Mode Input Voltage Range • Three State Rx and Tx Outputs • 15ns (Max) Propagation Delays, 5ns (Max) Skew • Operates from a Single +5V Supply (10% Tolerance) Receiver (Rx) inputs feature a “fail-safe if open” design, which ensures a logic high Rx output if Rx inputs are floating. • Current Limiting and Thermal Shutdown for driver Overload Protection Driver (Tx) outputs are short circuit protected, even for voltages exceeding the power supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to prevent damage if power dissipation becomes excessive. Applications Ordering Information • Field Bus Networks PART NO. (BRAND) TEMP. RANGE (oC) PACKAGE • Pb-free available PKG. DWG. # ISL81485IB (81485IB) -40 to 85 8 Ld SOIC M8.15 ISL81485IBZ (81485IB) (See Note) -40 to 85 8 Ld SOIC (Pb-free) M8.15 ISL81485IU (1485) -40 to 85 8 Ld MSOP M8.118 ISL81485IUZ (1485) (See Note) -40 to 85 8 Ld MSOP (Pb-free) M8.118 • Factory Automation • Security Networks • Building Environmental Control Systems • Industrial/Process Control Networks Pinout ISL81485 (SOIC, MSOP) TOP VIEW RO 1 *Add “-T” suffix to part number for tape and reel packaging. R RE 2 NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is compatible with both SnPb and Pb-free soldering operations. 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-020B. 1 • SCSI “Fast 20” Drivers and Receivers DE 3 DI 4 D 8 VCC 7 B/Z 6 A/Y 5 GND CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003, 2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL81485 Truth Table Truth Table TRANSMITTING RECEIVING INPUTS OUTPUTS INPUTS OUTPUT RE DE DI B/Z A/Y RE DE A-B RO X 1 1 0 1 0 0 ≥ +0.2V 1 X 1 0 1 0 0 0 ≤ -0.2V 0 X 0 X High-Z High-Z 0 0 Inputs Open 1 1 X X High-Z Pin Descriptions PIN FUNCTION RO Receiver output: If A > B by at least 0.2V, RO is high; If A < B by 0.2V or more, RO is low; RO = High if A and B are unconnected (floating). RE Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low. DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low. GND Ground connection. A/Y RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input (A) if DE = 0; pin is an output (Y) if DE = 1. B/Z RS-485/422 level, inverting receiver input and inverting driver output. Pin is an input (B) if DE = 0; pin is an output (Z) if DE = 1. VCC System power supply input (4.5V to 5.5V). Typical Operating Circuit ISL81485 +5v +5v + 8 0.1µF 0.1µF + 8 VCC 1 RO VCC R D 2 RE B/Z 7 3 DE A/Y 6 4 DI RT RT 7 B/Z DE 3 6 A/Y RE 2 R D GND GND 5 5 2 DI 4 RO 1 ISL81485 Absolute Maximum Ratings Thermal Information VCC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Input Voltages DI, DE, RE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Input / Output Voltages A/Y, B/Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +12.5V RO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC +0.5V) Short Circuit Duration Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Thermal Resistance (Typical, Note 1) θJA (oC/W) 8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . 105 8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . 140 Maximum Junction Temperature (Plastic Package) . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (Lead Tips Only) Operating Conditions Temperature Range ISL81485IX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 1. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = 25oC, Note 2 Electrical Specifications PARAMETER SYMBOL TEST CONDITIONS TEMP (oC) MIN TYP MAX UNITS Full - - VCC V Full 2.5 3 - V DC CHARACTERISTICS Driver Differential VOUT (no load) VOD1 Driver Differential VOUT (with load) VOD2 Change in Magnitude of Driver Differential VOUT for Complementary Output States Driver Common-Mode VOUT Change in Magnitude of Driver Common-Mode VOUT for Complementary Output States R = 50Ω (RS-422) (Figure 1A) R = 27Ω (RS-485) (Figure 1A) Full 2 2.5 5 V RD = 60Ω, -7V ≤ VCM ≤ 12V (Figure 1B) Full 1.5 - - V ∆VOD R = 27Ω or 50Ω (Figure 1A) Full - 0.01 0.2 V VOC R = 27Ω or 50Ω (Figure 1A) Full - - 3 V ∆VOC R = 27Ω or 50Ω (Figure 1A) Full - 0.01 0.2 V Logic Input High Voltage VIH DE, DI, RE Full 2 - - V Logic Input Low Voltage VIL DE, DI, RE Full - - 0.8 V Logic Input Current IIN1 DE, DI, RE Full -1 - 1 µA Input Current (A/Y, B/Z) (Note 5) IIN2 DE = 0V, VCC = 0V or 4.5 to 5.5V Receiver Differential Threshold Voltage VTH VIN = 12V Full - - 1 mA VIN = -7V Full -0.8 - - mA -7V ≤ VCM ≤ 12V Full -0.2 - 0.2 V Receiver Input Hysteresis ∆VTH VCM = 0V 25 - 40 - mV Receiver Output High Voltage VOH IO = -4mA, VID = 200mV Full 4 - - V Receiver Output Low Voltage VOL IO = -4mA, VID = 200mV Full - - 0.4 V Three-State (high impedance) Receiver Output Current IOZR 0.4V ≤ VO ≤ 2.4V Full - - ±1 µA Receiver Input Resistance RIN -7V ≤ VCM ≤ 12V Full 12 - - kΩ No-Load Supply Current, Note 3 ICC DI, RE = 0V or VCC Driver Short-Circuit Current, VO = High or Low IOSD1 3 DE = VCC Full - 1 2.2 mA DE = 0V Full - 0.8 1 mA Full 60 - 250 mA DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note 4) ISL81485 Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = 25oC, Note 2 (Continued) Electrical Specifications PARAMETER TEMP (oC) MIN TYP MAX UNITS Full 7 - 85 mA tPLH, tPHL RDIFF = 54Ω, CL = 100pF (Figure 2) Full 2 9 15 ns tSKEW RDIFF = 54Ω, CL = 100pF (Figure 2) Full - 1 5 ns tR, tF RDIFF = 54Ω, CL = 100pF (Figure 2) Full - 5 15 ns SYMBOL Receiver Short-Circuit Current TEST CONDITIONS 0V ≤ VO ≤ VCC IOSR SWITCHING CHARACTERISTICS Driver Input to Output Prop Delay Driver Prop Delay Skew Driver Differential Rise or Fall Time Driver Enable to Output High tZH CL = 50pF, SW = GND (Figure 3) Full - 9 25 ns Driver Enable to Output Low tZL CL = 50pF, SW = VCC (Figure 3) Full - 9 25 ns Matched Enable Switching |tAZH - tBZL| or |tBZH - tAZL| ∆tEN (Figure 3) Full - 1 3 ns Driver Disable from Output High tHZ CL = 50pF, SW = GND (Figure 3) Full - 9 25 ns Driver Disable from Output Low tLZ CL = 50pF, SW = VCC (Figure 3) Full - 9 25 ns Matched Disable Switching |tAHZ - tBLZ| or |tBHZ - tALZ| ∆tDIS (Figure 3) Full - 2 5 ns Driver Maximum Data Rate fMAXD |VOD| ≥ 1.5V (Figure 4) Full 30 - - Mbps tPLH, tPHL (Figure 5) Full 8 17 30 ns (Figure 5) Full - 1 5 ns Receiver Input to Output Prop Delay Receiver Prop Delay Skew | tPLH - tPHL | tSKD Receiver Enable to Output High tZH CL = 15pF, SW = GND (Figure 6) Full - 7 20 ns Receiver Enable to Output Low tZL CL = 15pF, SW = VCC (Figure 6) Full - 7 20 ns Receiver Disable from Output High tHZ CL = 15pF, SW = GND (Figure 6) Full - 7 20 ns tLZ CL = 15pF, SW = VCC (Figure 6) Full - 7 20 ns CL = 15pF, VID ≥ 1.5V, RO tH and tL ≥ 20ns Full 30 - - Mbps Receiver Disable from Output Low Receiver Maximum Data Rate fMAXR NOTES: 2. 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. 3. Supply current specification is valid for loaded drivers when DE = 0V. 4. Applies to peak current. See “Typical Performance Curves” for more information. 5. Devices meeting these limits are denoted as “1 unit load (UL)” transceivers. The RS-485 standard allows up to 32 Unit Loads on the bus, so a 1UL transceiver permits > 32 devices on the bus. Test Circuits and Waveforms R VCC 375Ω DE VCC Z DI Z DI VOD D DE Y Y R FIGURE 1A. VOD AND VOC VOC RD = 60Ω -7V to +12V 375Ω FIGURE 1B. VOD WITH COMMON MODE LOAD FIGURE 1. DC DRIVER TEST CIRCUITS 4 VCM VOD D ISL81485 Test Circuits and Waveforms (Continued) 3V DI 1.5V 1.5V 0V tPHL tPLH VOH VCC CL = 100pF DE 50% OUT (Y) 50% VOL Z DI tPHL RDIFF D Y tPLH VOH CL = 100pF OUT (Z) 50% SIGNAL GENERATOR 50% VOL 90% DIFF OUT (Y - Z) +VOD 90% 10% 10% tR -VOD tF SKEW = |CROSSING PT. OF Y↑ & Z↓ - CROSSING PT. OF Y↓ & Z↑| FIGURE 2A. TEST CIRCUIT FIGURE 2B. MEASUREMENT POINTS FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES DE 3V Z DI 110Ω VCC D SIGNAL GENERATOR SW Y DE 1.5V 1.5V 0V GND CL tZH tHZ OUTPUT HIGH VOH - 0.5V OUT (Y, Z) PARAMETER OUTPUT RE DI SW CL (pF) tHZ Y/Z X 1/0 GND 50 tLZ Y/Z X 0/1 VCC 50 tZH Y/Z X 1/0 GND 50 tZL Y/Z X 0/1 VCC 50 VOH 2.3V 0V tZL tLZ VCC OUT (Y, Z) 2.3V OUTPUT LOW FIGURE 3A. TEST CIRCUIT VOL + 0.5V V OL FIGURE 3B. MEASUREMENT POINTS FIGURE 3. DRIVER ENABLE AND DISABLE TIMES VCC CL = 100pF DE 3V Z DI DI RDIFF D Y 0V CL = 100pF SIGNAL GENERATOR +VOD DIFF OUT (Y - Z) -VOD FIGURE 4A. TEST CIRCUIT FIGURE 4B. MEASUREMENT POINTS FIGURE 4. DRIVER DATA RATE 5 0V ISL81485 Test Circuits and Waveforms (Continued) RE 3V 15pF B +1.5V R A A 1.5V RO 1.5V 0V tPLH tPHL VCC SIGNAL GENERATOR 50% RO 50% 0V FIGURE 5A. TEST CIRCUIT FIGURE 5B. MEASUREMENT POINTS FIGURE 5. RECEIVER PROPAGATION DELAY 3V RE RE B SIGNAL GENERATOR 1kΩ RO R 1.5V VCC SW A 1.5V 0V GND tZH 15pF tHZ OUTPUT HIGH VOH - 0.5V RO VOH 1.5V 0V PARAMETER DE A SW tHZ 0 +1.5V GND tLZ 0 -1.5V VCC tZH 0 +1.5V GND tZL 0 -1.5V VCC FIGURE 6A. TEST CIRCUIT tZL tLZ VCC RO 1.5V OUTPUT LOW VOL + 0.5V V OL FIGURE 6B. MEASUREMENT POINTS FIGURE 6. RECEIVER ENABLE AND DISABLE TIMES Application Information Receiver Features RS-485 and RS-422 are differential (balanced) data transmission standards for use in long haul or noisy environments. RS-422 is a subset of RS-485, so RS-485 transceivers are also RS-422 compliant. RS-422 is a pointto-multipoint (multidrop) standard, which allows only one driver and up to 10 (assuming one unit load devices) receivers on each bus. RS-485 is a true multipoint standard, which allows up to 32 one unit load devices (any combination of drivers and receivers) on each bus. To allow for multipoint operation, the RS-485 spec requires that drivers must handle bus contention without sustaining any damage. This device utilizes a differential input receiver for maximum noise immunity and common mode rejection. Input sensitivity is ±200mV, as required by the RS422 and RS-485 specifications. Another important advantage of RS-485 is the extended common mode range (CMR), which specifies that the driver outputs and receiver inputs withstand signals that range from +12V to -7V. RS-422 and RS-485 are intended for runs as long as 4000’, so the wide CMR is necessary to handle ground potential differences, as well as voltages induced in the cable by external fields. The receiver includes a “fail-safe if open” function that guarantees a high level receiver output if the receiver inputs are unconnected (floating). 6 Receiver input resistance surpasses the RS-422 spec of 4kΩ, and meets the RS-485 “Unit Load” requirement of 12kΩ minimum, thereby allowing up to 32 devices on a bus. Receiver inputs function with common mode voltages as great as 7V outside the power supplies (i.e., +12V and -7V), making them ideal for long networks, or industrial applications, where induced voltages are a definite concern. The receiver easily meets the data rate supported by the driver, and receiver outputs are three-statable via the active low RE input. ISL81485 Driver Features The RS-485, RS-422 driver is a differential output device that delivers at least 2V across a 54Ω load (RS-485), and at least 2.5V across a 100Ω load (RS-422) even with VCC = 4.5V. The drivers feature low propagation delay skew to maximize bit width, and to minimize EMI. The driver is three-statable via the active high DE input. Outputs of the driver are not slew rate limited, so faster output transition times allow data rates of at least 30Mbps. Data Rate, Cables, and Terminations RS-485/RS-422 are intended for network lengths up to 4000’, but the maximum system data rate decreases as the transmission length increases. Devices operating at 30Mbps usually are limited to lengths of a couple hundred feet, but the larger differential output voltage of this transceiver allows that distance to be pushed past 350’. Figure 7 illustrates the 30Mbps performance of the ISL81485 driving 350’ of CAT5 cable, terminated in 120Ω at both the driver and receiver ends. As shown, the differential signal (A-B) delivered to the receiver inputs at the end of the cable is still greater than 1.5V (i.e., 7.5 times the required Rx sensitivity). Thus, even longer cables can be driven if lower noise margins are acceptable. Twisted pair is the cable of choice for RS-485, RS-422 networks. Twisted pair cables tend to pick up noise and other electromagnetically induced voltages as common mode signals, which are effectively rejected by the differential receivers in these ICs. 0 DRIVER INPUT (V) 5 RO 0 DRIVER+CABLE DELAY As stated previously, the RS-485 spec requires that drivers survive worst case bus contentions undamaged. The ISL81485 meets this requirement via driver output short circuit current limits, and on-chip thermal shutdown circuitry. The driver output stages incorporate short circuit current limiting circuitry which ensures that the output current never exceeds the RS-485 spec, even at the common mode voltage range extremes. In the event of a major short circuit condition, the device also includes a thermal shutdown feature that disables the drivers whenever the die temperature becomes excessive. This eliminates the power dissipation, allowing the die to cool. The drivers automatically reenable after the die temperature drops about 15 degrees. If the contention persists, the thermal shutdown/reenable cycle repeats until the fault is cleared. Receivers stay operational during thermal shutdown. VCC = 5V, TA = 25oC; Unless Otherwise Specified DI = 30Mbps 5 Built-In Driver Overload Protection (~490ns) 3 1.5 OUTPUT CURRENT (mA) RECEIVER INPUT (V) RECEIVER OUTPUT (V) Typical Performance Curves Proper termination is imperative, when using a 30Mbps device, to minimize reflections. In point-to-point, or point-tomultipoint (single driver on bus) networks, the main cable should be terminated in its characteristic impedance (typically 120Ω) at the end farthest from the driver. In multireceiver applications, stubs connecting receivers to the main cable should be kept as short as possible. Multipoint (multidriver) systems require that the main cable be terminated in its characteristic impedance at both ends. Stubs connecting a transceiver to the main cable should be kept as short as possible. 160 140 120 100 80 60 40 20 0 -20 -40 Y OR Z = LOW Y OR OR ZZ == HIGH HIGH Y -60 -80 -100 -120 -140 A-B 0 -1.5 -3 -160 TIME (20ns/DIV) FIGURE 7. DRIVER AND RECEIVER WAVEFORMS DRIVING 350 FEET (107 METERS) OF CAT5 CABLE (DOUBLE TERMINATED WITH 120Ω) 7 -7 -6 -4 -2 0 2 4 6 OUTPUT VOLTAGE (V) 8 10 12 FIGURE 8. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT VOLTAGE ISL81485 Typical Performance Curves VCC = 5V, TA = 25oC; Unless Otherwise Specified (Continued) 4 DIFFERENTIAL OUTPUT VOLTAGE (V) DRIVER OUTPUT CURRENT (mA) 120 100 80 60 40 20 0 0 1 2 3 4 DIFFERENTIAL OUTPUT VOLTAGE (V) 3.8 3.6 3.4 3.2 RDIFF = 54Ω 3 2.8 -40 5 0 -25 25 50 85 75 TEMPERATURE (oC) FIGURE 9. DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT VOLTAGE FIGURE 10. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs TEMPERATURE 12 3 RDIFF = 54Ω RDIFF = 54Ω 2.5 11 |tPHL(Y or Z) - tPLH(Y or Z)| = PW Distortion tPLHZ tPLHY 2 10 SKEW (ns) PROPAGATION DELAY (ns) RDIFF = 100Ω 9 tPHLY 1.5 |tPHLY - tPLHZ| or |tPLHY - tPHLZ| 1 tPHLZ 8 0.5 -25 0 25 50 0 -40 85 75 TEMPERATURE (oC) 0 5 RO 0 5 4 3 A/Y 2 1 RECEIVER OUTPUT (V) 5 DRIVER INPUT (V) RDIFF = 54Ω, CL = 15pF DI B/Z 0 TIME (10ns/DIV) FIGURE 13. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH 8 0 25 TEMPERATURE (oC) 50 85 75 FIGURE 12. DRIVER SKEW AND PULSE DISTORTION vs TEMPERATURE DRIVER OUTPUT (V) DRIVER OUTPUT (V) RECEIVER OUTPUT (V) FIGURE 11. DRIVER PROPAGATION DELAY vs TEMPERATURE -25 RDIFF = 54Ω, CL = 15pF 5 DI 0 5 RO 0 5 4 3 B/Z 2 1 A/Y 0 TIME (10ns/DIV) FIGURE 14. DRIVER AND RECEIVER WAVEFORMS, HIGH TO LOW DRIVER INPUT (V) 7 -40 ISL81485 Typical Performance Curves VCC = 5V, TA = 25oC; Unless Otherwise Specified (Continued) 950 DE = VCC, RE = X 900 ICC (µA) 850 800 DE = GND, RE = X 750 700 -40 -25 0 25 50 75 TEMPERATURE (oC) FIGURE 15. SUPPLY CURRENT vs TEMPERATURE Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 528 PROCESS: Si Gate BiCMOS 9 85 ISL81485 Mini Small Outline Plastic Packages (MSOP) N M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE E1 INCHES E -B- INDEX AREA 1 2 0.20 (0.008) A B C TOP VIEW 4X θ 0.25 (0.010) R1 R GAUGE PLANE SEATING PLANE -CA 4X θ A2 A1 b -H- 0.10 (0.004) L SEATING PLANE C MAX MIN MAX NOTES 0.037 0.043 0.94 1.10 - A1 0.002 0.006 0.05 0.15 - A2 0.030 0.037 0.75 0.95 - b 0.010 0.014 0.25 0.36 9 c 0.004 0.008 0.09 0.20 - D 0.116 0.120 2.95 3.05 3 E1 0.116 0.120 2.95 3.05 4 0.026 BSC 0.20 (0.008) C C a SIDE VIEW CL E1 0.20 (0.008) C D -B- END VIEW NOTES: 1. These package dimensions are within allowable dimensions of JEDEC MO-187BA. 2. Dimensioning and tolerancing per ANSI Y14.5M-1994. 3. Dimension “D” does not include mold flash, protrusions or gate burrs and are measured at Datum Plane. Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006 inch) per side. 4. Dimension “E1” does not include interlead flash or protrusions and are measured at Datum Plane. - H - Interlead flash and protrusions shall not exceed 0.15mm (0.006 inch) per side. 5. Formed leads shall be planar with respect to one another within 0.10mm (0.004) at seating Plane. 6. “L” is the length of terminal for soldering to a substrate. 7. “N” is the number of terminal positions. 8. Terminal numbers are shown for reference only. 9. Dimension “b” does not include dambar protrusion. Allowable dambar protrusion shall be 0.08mm (0.003 inch) total in excess of “b” dimension at maximum material condition. Minimum space between protrusion and adjacent lead is 0.07mm (0.0027 inch). and - B - to be determined at Datum plane 11. Controlling dimension: MILLIMETER. Converted inch dimensions are for reference only. 10 0.65 BSC - E 0.187 0.199 4.75 5.05 - L 0.016 0.028 0.40 0.70 6 0.037 REF N -A- 10. Datums -A -H- . MIN A L1 e D SYMBOL e L1 MILLIMETERS 0.95 REF 8 R 0.003 R1 0 α - 8 - 0.07 0.003 - 5o 15o 0o 6o 7 - - 0.07 - - 5o 15o - 0o 6o Rev. 2 01/03 ISL81485 Small Outline Plastic Packages (SOIC) M8.15 (JEDEC MS-012-AA ISSUE C) N INDEX AREA 0.25(0.010) M H 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE B M E INCHES -B- 1 2 SYMBOL 3 L SEATING PLANE -A- h x 45o A D -C- µα e A1 B 0.25(0.010) M C C A M B S 1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication Number 95. MILLIMETERS MIN MAX NOTES A 0.0532 0.0688 1.35 1.75 - 0.0040 0.0098 0.10 0.25 - B 0.013 0.020 0.33 0.51 9 C 0.0075 0.0098 0.19 0.25 - D 0.1890 0.1968 4.80 5.00 3 E 0.1497 0.1574 3.80 4.00 4 0.050 BSC 1.27 BSC - H 0.2284 0.2440 5.80 6.20 - h 0.0099 0.0196 0.25 0.50 5 L 0.016 0.050 0.40 1.27 6 8o 0o N NOTES: MAX A1 e 0.10(0.004) MIN α 8 0o 8 7 8o Rev. 0 12/93 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimension “D” does not include mold flash, protrusions or gate burrs. Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006 inch) per side. 4. Dimension “E” does not include interlead flash or protrusions. Interlead flash and protrusions shall not exceed 0.25mm (0.010 inch) per side. 5. The chamfer on the body is optional. If it is not present, a visual index feature must be located within the crosshatched area. 6. “L” is the length of terminal for soldering to a substrate. 7. “N” is the number of terminal positions. 8. Terminal numbers are shown for reference only. 9. 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. All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. 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 11