DS9638QML DS9638QML RS-422 Dual High Speed Differential Line Driver Literature Number: SNOSB15 DS9638QML RS-422 Dual High Speed Differential Line Driver General Description Features The DS9638 is a Schottky, TTL compatible, dual differential line driver designed specifically to meet the EIA Standard RS-422 specifications. It is designed to provide unipolar differential drive to twisted pair or parallel wire transmission lines. The inputs are TTL compatible. The outputs are similar to totem pole TTL outputs, with active pull-up and pull-down. The device features a short circuit protected active pull-up with low output impedance and is specified to drive 50Ω transmission lines at high speed. The mini-DIP provides high package density. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Single 5V supply Schottky technology TTL and CMOS compatible inputs Output short circuit protection Input clamp diodes Complementary outputs Minimum output skew (<1.0 ns typical) 50 mA output drive capability for 50Ω transmission lines Meets EIA RS-422 specifications Propagation delay of less than 10 ns “Glitchless” differential output Delay time stable with VCC and temperature variations (<2.0 ns typical) (Figure 3) ■ Extended temperature range Ordering Table NS PART NUMBER SMD PART NUMBER DS9638J/883 5962–8754601PA NS PACKAGE NUMBER J08A PACKAGE DISCRIPTION 8LD CERAMIC DIP Connection Diagram 8-Lead DIP 30059001 Top View See NS Package Number J08A © 2008 National Semiconductor Corporation 300590 www.national.com DS9638QML RS-422 Dual High Speed Differential Line Driver May 27, 2008 DS9638QML Absolute Maximum Ratings (Note 1) Storage Temperature Range Ceramic DIP Lead Temperature Ceramic DIP (Soldering, 60 sec.) Maximum Power Dissipation at 25°C (Note 2) Cavity Package VCC Lead Potential to Ground Input Voltage −65°C to +175°C 300°C 1300 mW −5V to 7V −0.5V to +7V Recommended Operating Conditions DS9638J/883 Supply Voltage (VCC) Output Current HIGH (IOH ) Output Current LOW (IOL ) Operating Temperature (T A) Min 4.5 −55 Max 5.5 −50 50 125 Units V mA mA °C Quality Conformance Inspection MIL-STD-883, Method 5005 - Group A www.national.com Subgroup Description Temp (°C) 1 Static tests at +25°C 2 Static tests at +125°C 3 Static tests at -55°C 4 Dynamic tests at +25°C 5 Dynamic tests at +125°C 6 Dynamic tests at -55°C 7 Functional tests at +25°C 8A Functional tests at +125°C 8B Functional tests at -55°C 9 Switching tests at +25°C 10 Switching tests at +125°C 11 Switching tests at -55°C 12 Setting time at +25°C 13 Setting time at +125°C 14 Setting time at -55°C 2 DC Parameters Over recommended operating temperature and supply voltage ranges, unless otherwise specified Symbol Parameter Conditions Notes Units SubGroups V 1, 2, 3 -1.2 V 1, 2, 3 2 V 1, 2, 3 Min VOL Output Voltage Low VCC = 4.5V, FIOL = 30mA for temp, (Note 3) FIOL = 35mA for room VFCD Input Clamped Voltage VCC = 4.5V, FIFCD = -18mA VOHQVT VT, VT Terminated Output Voltage VCC = 5.5V, RO = 100 Ω VOH Logical "1" Output Voltage VCC = 4.5V, FIOH = -10mA VOHQ Logical "1" Output Voltage VCC = 4.5V, FIOHQ = -40mA VOHQBAL VT- VT Output Balance VCC = 5.5V, RO = 100 Ω -0.4 IIL Logical "0" Input Current VCC = 5.5V, FVIIL= 0.5V -200 IIH Logical "1" Input Current VCC = 5.5V, FVIIH = 2.7V IIHQH Logical "1" Input Current VCC = 5.5V, FVIIHQH = 5.5V IOS Output Short Circuit Current Max 0.5 2.5 V 2.0 2.0 V 1.0 0.4 Supply Current VCC = 5.5V, FVCCH = 5.5V IOHC IO (off) Output Leakage VCC = 5.5V, FVOH = 5.5V VOS, VOS Output Offset Voltage (Note 5) VOS- VOS Output Offset Balance (Note 4) VIH Input High Voltage (Note 6) VIL Input Low Voltage VHB IX Output Leakage VCC = 0.0V, FIOHBQI = 150 μA ICEX Output Leakage Current VCC = 0.0V, FVCEX = 5.5V ICEXQI Output Leakage Current VCC = 0.0V, FVICEXQ2 = -0.25V 1, 2, 3 1, 2, 3 μA 1, 2, 3 50 μA 1, 2, 3 mA 1 2, 3 65 mA 1 75 mA 2, 3 200 μA 1 3 V 1, 2, 3 .4 V 1, 2, 3 V 1, 2, 3 V 1, 2, 3 V 1 μA 2, 3 μA 2, 3 Max Units SubGroups 2 (Note 6) 2, 3 V μA -150 -40 ICC 1 25 -150 -50 VCC = 5.5V, FVIOS = 0V 1 2, 3 0.5 5.55 150 -150 AC Parameters Over recommended operating temperature and supply voltage ranges, unless otherwise specified Symbol Parameter Conditions Notes Min tPLH Propagation Delay to High Level VCC = 5V, RO = 100 Ω, CL = 15PF 20 nS 9 tPHL Propagation Delay to Low Level VCC = 5V, RO = 100 Ω, CL = 15PF 20 nS 9 tF Fall Time VCC = 5V, 90% - 10% 20 nS 9 tR Rise Time VCC = 5V, 10% - 90% 20 nS 9 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 tables of “Electrical Characteristics provide conditions for actual device operation. Note 2: Derate cavity package 8.7 mW/°C above 25°C. Note 3: 35mA is more stringent than 30mA. Note 4: Guaranteed by Vt- VT test. Note 5: Guaranteed by design. Note 6: Guaranteed by VOH & VOL tests. 3 www.national.com DS9638QML DS9638J/883 Electrical Characteristics DS9638QML 30059002 FIGURE 1. Equivalent Circuit DC Test Circuit 30059003 FIGURE 2. Terminated Output Voltage and Output Balance CL includes probe and jig capacitance. PRR = 500 kHz, tW = 100 ns, tr ≤ 5.0 ns, ZO = 50Ω. 30059004 Note 7: The pulse generator has the following characteristics: 30059005 FIGURE 3. AC Test Circuit and Voltage Waveform www.national.com 4 DS9638QML 30059006 30059007 FIGURE 4. Typical Delay Characteristics 5 www.national.com DS9638QML Revision History Date Released 05/27/08 www.national.com Revision A Section Originator Changes New Release, Corporate Format, Change to DC Electrical Section Bill Petcher 1 MDS data sheet converted into one Corp. data sheet format. Change made to VOH, VOHQ and IOS. MNDS9638-X, Rev. 0AL data sheet will be Archived. 6 DS9638QML Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) NS Package Number J08A 7 www.national.com DS9638QML RS-422 Dual High Speed Differential Line Driver Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Design Support Amplifiers www.national.com/amplifiers WEBENCH www.national.com/webench Audio www.national.com/audio Analog University www.national.com/AU Clock Conditioners www.national.com/timing App Notes www.national.com/appnotes Data Converters www.national.com/adc Distributors www.national.com/contacts Displays www.national.com/displays Green Compliance www.national.com/quality/green Ethernet www.national.com/ethernet Packaging www.national.com/packaging Interface www.national.com/interface Quality and Reliability www.national.com/quality LVDS www.national.com/lvds Reference Designs www.national.com/refdesigns Power Management www.national.com/power Feedback www.national.com/feedback Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www.national.com/led PowerWise www.national.com/powerwise Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors Wireless (PLL/VCO) www.national.com/wireless THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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