NPN SILICON OSCILLATOR AND MIXER TRANSISTOR NE944 SERIES FEATURES DESCRIPTION * LOW COST The NE944 series of NPN silicon epitaxial bipolar transistors is intended for use in general purpose UHF oscillator and mixer applications. It is suitable for automotive keyless entry and TV tuner designs. * HIGH GAIN BANDWIDTH PRODUCT: fT = 2000 MHz TYP * LOW COLLECTOR TO BASE TIME CONSTANT: CC*r b'b = 5 ps TYP * LOW FEEDBACK CAPACITANCE: CRE= 0.55 pF TYP The device features stable oscillation and small frequency drift during changes in the supply voltage and over the ambient temperature range. ELECTRICAL CHARACTERISTICS (TA = 25C) PART NUMBER EIAJ1 REGISTERED NUMBER PACKAGE CODE SYMBOLS PARAMETERS AND CONDITIONS ICBO Collector Cutoff Current, VCB = 12 V, IE = 0 hFE DC Current Gain, VCE = 10 V, IC = 5.0 mA VCE(sat) fT COB CC*rb'b CRE Collector Saturation Voltage, IC = 10 mA, IB = 1.0 mA Gain Bandwidth Product, VCE = 3 V, IE = 5 mA Output Capacitance, VCB = 3 V, IE = 0 mA, f = 1.0 MHz NE94430 2SC4184 30 UNITS MIN TYP MAX MIN A TYP MAX 0.1 40 100 1.2 2.0 V GHz NE94433 2SC3545 33 200 0.1 50 100 0.5 0.5 1.3 pF 0.7 1.2 Collector to Base Time Constant, VCE = 3 V, IE = -5.0 mA, f = 31.9 MHz ps 3.5 8.0 Feedback Capacitance, VCB = 10 V, IE = 0 mA, f = 1.0 MHz pF 250 2.0 5.0 0.55 1.0 RTH (J-C) Thermal Resistance, Junction to Case (infinite heat sink) C/W 200 RTH (J-A) Thermal Resistance, Junction to Ambient (free air) C/W 833 620 Power Dissipation mW 150 150 PT 200 Note: 1. Electronic Industrial Association of Japan. California Eastern Laboratories NE944 SERIES ABSOLUTE MAXIMUM RATINGS1 (TA = 25C) SYMBOLS PARAMETERS UNITS RATINGS VCBO Collector to Base Voltage V 30 VCEO Collector to Emitter Voltage V 15 VEBO Emitter to Base Voltage V 3.0 IC Collector Current mA 50 TJ Junction Temperature NE94432, NE94433 NE94430 C C 125 150 Storage Temperature C -55 to +125 TSTG Note: 1. Operation in excess of any one of these parameters may result in permanent damage. TYPICAL PERFORMANCE CURVES (TA = 25C) DC CURRENT GAIN vs. COLLECTOR CURRENT TOTAL POWER DISSIPATION vs. AMBIENT TEMPERATURE 200 FREE AIR 250 DC Current Gain, hFE Total Power Dissipation, PT (mW) 300 200 150 NE94433 100 FREE AIR VCE = 10 V 92 VCE = 3 V 50 20 NE94430 50 0 10 0 25 50 75 100 125 0.5 150 1 5 10 50 Ambient Temperature, TA (C) Collector Current, IC (mA) GAIN BANDWIDTH PRODUCT vs. COLLECTOR CURRENT TYPICAL DEVICE CAPACITANCE vs. COLLECTOR TO BASE VOLTAGE 5 3 f = 1.0 MHz 3 VCE = -5 V 2 1 0.7 0.5 0.3 0.2 Feedback Capacitance, Cre (pF) Gain Bandwidth Product, ft (GHz) 100 2 1 0.7 0.5 0.3 0.2 0.1 0.1 0.5 0.7 1 2 3 5 7 10 20 Collector Current, IC (mA) 30 50 1 2 3 5 7 10 20 Collector to Base Voltage, VCB (V) 30 NE944 SERIES NE94430 TYPICAL NOISE PARAMETERS (TA = 25C) FREQ. NFOPT GA (MHz) (dB) (dB) OPT MAG ANG Rn/50 NE94433 TYPICAL NOISE PARAMETERS (TA = 25C) FREQ. NFOPT GA (MHz) (dB) (dB) OPT MAG ANG Rn/50 VCE IC (V) (mA) VCE = 8 V, IC = 5 mA VCE = 2.5 V, IC = 2.5 mA 500 3.2 11.34 0.33 63 0.75 500 3.6 13.00 .43 51 1.0 8 5 1000 5.4 7.22 0.29 142 0.45 1000 5.8 9.34 .29 113 0.7 8 5 1500 6.7 4.44 0.32 165 0.64 79 0.70 VCE = 3 V, IC = 5 mA 500 3.8 12.67 0.27 1000 6.3 8.28 0.28 168 0.48 1500 8.3 5.58 0.38 -175 0.55 VCE = 10 V, IC = 5 mA 500 3.8 13.88 0.27 69 0.75 1000 6.3 9.53 0.27 160 0.58 1500 8.3 6.63 0.32 174 0.68 VCE = 10 V, IC = 5 mA 500 3.6 12.90 .44 .51 1.04 10 5 1000 6.0 8.90 .32 117 .70 10 5 NE944 SERIES TYPICAL COMMON EMITTER SCATTERING PARAMETERS (TA = 25C) j50 90 5 120 j100 j25 60 4 0 150 S22 3 GHz j10 S12 30 3 GHz 3 2 10 25 50 100 S11 .05 GHz S21 180 0.5 GHz 0 S22 .05 GHz 1 S12 .2 0.5 GHz S21 3 GHz .3 .4 .5 0 -j10 Coordinates in Ohms Frequency in GHz (VCE = 2.5 V, IC = 2.5 mA) S11 3 GHz -j100 -j25 -150 -30 -120 -60 -90 -j50 NE94430 VCE = 2.5 V, IC = 2.5 mA FREQUENCY S11 S21 MAG S12 S22 K ANG S21 MAG1 (MHz) MAG ANG ANG MAG ANG MAG (dB) (dB) 50 100 200 300 400 500 600 700 800 900 1000 1500 2000 2500 3000 .929 .854 .735 .608 .498 .423 .382 .355 .338 .327 .318 .308 .315 .340 .379 -13.0 -24.4 -50.1 -74.2 -96.3 -113.8 -126.3 -136.7 -145.4 -152.6 -159.5 172.6 148.6 125.9 105.4 4.051 3.892 3.591 3.285 2.956 2.607 2.273 2.013 1.803 1.630 1.490 1.071 0.851 0.710 0.614 160.3 148.7 129.9 114.9 102.1 92.2 84.7 78.4 72.9 68.0 63.5 45.4 31.3 21.1 14.8 .017 .030 .049 .060 .069 .076 .084 .091 .099 .107 .115 .157 .201 .257 .326 89.3 66.4 56.9 53.8 52.3 52.4 53.1 54.1 54.6 55.3 56.0 58.2 58.7 58.2 55.2 .977 .936 .843 .788 .756 .738 .728 .721 .717 .713 .710 .704 .702 .691 .670 -6.0 -10.9 -16.2 -18.4 -19.9 -21.8 -23.7 -25.7 -28.0 -30.2 -32.6 -43.9 -56.4 -69.1 -82.8 0.10 0.47 0.65 0.78 0.89 0.99 1.06 1.13 1.17 1.21 1.22 1.25 1.20 1.14 1.11 12.2 11.8 11.1 10.3 9.4 8.3 7.1 6.1 5.1 4.2 3.5 0.6 -1.4 -3.0 -4.2 23.8 21.1 18.7 17.4 16.3 15.4 12.8 11.3 10.1 9.1 8.2 5.4 3.7 2.1 0.8 -19.8 -38.0 -76.6 -106.3 -125.6 -138.4 -147.8 -155.6 -162.1 -167.8 -173.3 163.0 141.1 119.9 100.9 7.561 6.980 5.906 4.762 3.819 3.152 2.671 2.318 2.050 1.839 1.669 1.169 0.914 0.751 0.642 154.4 138.9 117.4 101.6 91.5 84.3 78.4 73.3 68.7 64.4 60.4 43.8 30.2 20.2 13.9 .014 .025 .037 .046 .052 .064 .072 .081 .089 .098 .106 .151 .198 .259 .332 88.3 63.8 59.4 58.2 59.9 60.3 61.7 62.4 62.7 63.2 63.5 64.6 64.3 62.8 58.7 .946 .874 .771 .732 .713 .705 .701 .699 .697 .696 .695 .696 .699 .691 .672 -8.5 -13.2 -15.6 -16.4 -17.5 -19.2 -21.1 -23.2 -25.4 -27.7 -30.1 -41.4 -53.8 -66.3 -79.9 0.20 0.57 0.77 0.92 1.07 1.09 1.15 1.18 1.21 1.22 1.24 1.19 1.12 1.05 1.02 17.6 16.9 15.4 13.6 11.6 10.0 8.5 7.3 6.2 5.3 4.4 1.4 -0.8 -2.5 -3.8 27.3 24.5 22.0 20.2 17.0 15.1 13.3 12.0 10.8 9.9 9.0 6.3 4.6 3.3 2.0 VCE = 3 V, ICE = 5 mA 50 100 200 300 400 500 600 700 800 900 1000 1500 2000 2500 3000 .819 .740 .511 .414 .354 .326 .313 .306 .303 .302 .303 .316 .333 .361 .401 Note: 1. Gain Calculations: MAG = |S21| |S12| (K K 2- 1 ). When K 1, MAG is undefined and MSG values are used. MSG = MAG = Maximum Available Gain MSG = Maximum Stable Gain 2 2 2 |S21| , K = 1 + | | - |S11| - |S22| , = S11 S22 - S21 S12 |S12| 2 |S12 S21| NE944 SERIES TYPICAL COMMON EMITTER SCATTERING PARAMETERS (TA = 25C) j50 90 10 25 50 60 S12 3 GHz 150 S11 3 GHz j10 0 120 j100 j25 S21 3 GHz S21 0.5 GHz S11 .05 GHz S12 .1 .2 0.5 GHz 180 0 S22 .05 GHz 100 30 .3 .4 .5 0 8 -j10 Coordinates in Ohms Frequency in GHz (VCE = 3 V, IC = 10 mA) S22 3 GHz -j100 -j25 10 -150 -30 12 -120 -60 14 -90 -j50 NE94430 VCE = 3 V, IC = 10 mA FREQUENCY S11 S21 S12 (MHz) MAG ANG MAG ANG 50 100 200 300 400 500 600 700 800 900 1000 1500 2000 2500 3000 .585 .496 .354 .320 .313 .310 .313 .317 .322 .326 .330 .354 .374 .402 .438 -42.0 -76.7 -119.1 -138.2 -150.2 -158.3 -164.8 -170.5 -175.4 -179.9 175.5 154.6 134.2 114.4 96.2 12.113 10.005 6.964 5.042 3.910 3.184 2.680 2.316 2.040 1.824 1.652 1.145 0.887 0.722 0.613 141.5 124.0 102.0 91.6 84.5 78.7 73.6 69.1 64.8 60.8 57.1 41.2 28.1 18.6 13.2 -17.7 -35.1 -68.0 -95.6 -114.9 -127.9 -138.0 -146.3 -153.6 -159.8 -165.8 168.0 144.3 121.7 101.5 7.577 6.982 6.049 4.966 4.020 3.329 2.823 2.450 2.165 1.941 1.759 1.223 0.949 0.772 0.649 156.2 141.8 120.3 104.4 93.9 86.6 80.7 75.6 70.9 66.7 62.8 46.3 32.5 22.0 15.0 MAG S22 K ANG MAG ANG .010 .015 .028 .039 .049 .058 .067 .076 .084 .093 .101 .148 .202 .269 .347 70.5 60.1 63.7 65.1 66.7 66.7 67.6 68.2 68.2 68.6 68.7 70.1 69.0 66.2 60.7 .896 .799 .721 .702 .693 .690 .689 .689 .689 .690 .690 .694 .697 .689 .668 -11.0 -13.5 -13.4 -14.0 -15.4 -17.3 -19.5 -21.8 -24.2 -26.6 -29.1 -41.0 -53.8 -66.7 -80.6 .012 .021 .033 .039 .045 .053 .060 .067 .074 .082 .088 .126 .167 .221 .290 79.9 60.9 60.0 59.9 61.9 62.5 63.9 64.5 65.0 66.0 66.3 68.6 69.7 69.6 66.7 .960 .909 .826 .792 .776 .768 .765 .763 .762 .761 .760 .763 .768 .766 .755 -6.1 -10.2 -12.6 -13.6 -14.7 -16.3 -18.1 -19.9 -22.0 -24.0 -26.1 -36.0 -46.8 -57.6 -69.3 S21 MAG (dB) (dB) 0.64 0.95 1.05 1.12 1.16 1.21 1.23 1.24 1.26 1.26 1.27 1.18 1.07 1.01 1.01 21.7 20.0 16.9 14.0 11.8 10.1 8.6 7.3 6.2 5.2 4.4 1.2 -1.0 -2.8 -4.3 30.8 28.2 22.5 19.1 16.6 14.6 13.1 11.9 10.8 9.9 9.0 6.3 4.8 3.7 2.1 0.30 0.57 0.71 0.86 0.98 1.04 1.09 1.13 1.15 1.15 1.18 1.12 1.03 0.93 0.87 17.6 16.9 15.6 13.9 12.1 10.4 9.0 7.8 6.7 5.8 4.9 1.7 -0.5 -2.2 -3.8 28.0 25.2 22.6 21.0 19.5 16.7 14.9 13.5 12.3 11.4 10.4 7.8 6.6 5.4 3.5 VCE = 10 V, Ic = 5 mA 50 100 200 300 400 500 600 700 800 900 1000 1500 2000 2500 3000 .860 .788 .574 .428 .349 .312 .293 .282 .277 .274 .273 .283 .301 .334 .380 Note: 1. Gain Calculations: MAG = |S21| |S12| (K K 2- 1 ). When K 1, MAG is undefined and MSG values are used. MSG = MAG = Maximum Available Gain MSG = Maximum Stable Gain 2 2 2 |S21| , K = 1 + | | - |S11| - |S22| , = S11 S22 - S21 S12 |S12| 2 |S12 S21| NE944 SERIES TYPICAL COMMON BASE SCATTERING PARAMETERS (TA = 25C) S12 3 GHz j50 90 .25 120 j100 j25 60 .2 150 S11 3 GHz j10 0 10 25 50 S11 .05 GHz 100 S22 .05 GHz S21 3 GHz .1 180 0 30 .15 S21 0.5 GHz .5 1 1.5 2 2.5 0 S12 0.5 GHz -j10 S22 3 GHz -j25 Coordinates in Ohms Frequency in GHz (VCB = 2.5 V, IC = 2.5 mA) -j100 -150 -30 -120 -60 -90 -j50 NE94430 VCB = 2.5 V, IC = 2.5 mA FREQUENCY (MHz) 50 100 200 400 600 800 1000 1500 2000 S11 S21 S12 S22 MAG K MAG ANG MAG ANG MAG ANG .622 .623 .622 .615 .604 .598 .592 .570 .543 178.7 176.6 172.6 164.8 157.0 149.4 141.9 124.2 107.4 1.602 1.599 1.601 1.567 1.525 1.467 1.395 1.166 0.923 -2.4 -5.5 -11.7 -25.0 -38.5 -52.0 -66.1 -102.4 -142.3 .001 .004 .009 .019 .033 .051 .070 .140 .215 60.6 101.3 101.2 106.4 111.8 112.8 113.7 106.9 97.1 0.996 0.999 1.004 1.015 1.038 1.047 1.061 1.076 1.024 ANG -0.6 -1.6 -4.1 -9.4 -15.1 -21.2 -27.6 -45.6 -64.7 -0.5 -1.6 -4.1 -9.0 -14.2 -20.2 -26.5 -44.9 -64.1 S21 MAG1 (dB) (dB) 4.1 4.1 4.1 3.9 3.7 3.3 2.9 1.3 -0.7 27.2 25.8 22.5 19.2 16.6 14.6 13.0 9.2 6.3 -0.154 -0.400 -0.220 -0.520 -0.680 -0.680 -0.630 -0.430 -0.040 4.9 4.9 4.8 4.7 4.6 4.4 4.1 2.7 0.8 29.4 29.4 24.6 20.1 17.4 15.3 13.4 9.8 6.8 -0.097 -0.030 -0.320 -0.600 -0.670 -0.650 -0.610 -0.360 0.040 5.3 5.3 5.3 5.2 5.1 4.9 4.5 3.2 1.1 32.6 27.9 24.9 20.3 17.8 15.4 13.6 9.9 6.8 -0.104 -0.114 -0.280 -0.470 -0.610 -0.620 -0.620 -0.410 -0.010 VCB = 3 V, lC = 5 mA 50 100 200 400 600 800 1000 1500 2000 .777 .771 .774 .767 .753 .741 .735 .710 .670 178.6 176.4 172.6 164.6 156.7 149.1 141.5 122.8 104.8 1.751 1.752 1.747 1.727 1.704 1.657 1.595 1.368 1.094 -2.2 -5.1 -11.2 -24.0 -36.9 -50.2 -64.5 -101.3 -141.3 .002 .002 .006 .017 .031 .049 .073 .144 .226 45.9 102.8 97.8 114.2 121.1 122.1 120.6 111.4 99.5 1.000 1.002 1.003 1.015 1.035 1.052 1.069 1.090 1.034 178.6 176.6 172.5 164.4 156.6 149.1 141.5 122.1 103.2 1.834 -2.2 1.840 -5.3 1.833 -11.5 1.818 -24.6 1.799 -37.9 1.749 -51.7 1.687 -66.6 1.443 -105.4 1.132 -146.8 .001 .003 .006 .017 .030 .051 .073 .149 .235 16.5 92.7 107.3 122.3 123.9 123.8 123.2 112.3 99.3 0.999 1.000 1.003 1.017 1.037 1.057 1.074 1.090 1.018 VCE = 3 V, IC = 10 mA 50 100 200 400 600 800 1000 1500 2000 .866 .861 .859 .846 .836 .826 .819 .793 .738 -0.4 1.6 - 4.1 -9.1 -14.5 -20.4 -27.0 -45.9 -65.7 Note: 1. Gain Calculations: MAG = |S21| |S12| (K K 2- 1 ). When K 1, MAG is undefined and MSG values are used. MSG = MAG = Maximum Available Gain MSG = Maximum Stable Gain 2 2 2 |S21| , K = 1 + | | - |S11| - |S22| , = S11 S22 - S21 S12 |S12| 2 |S12 S21| NE944 SERIES TYPICAL COMMON EMITTER SCATTERING PARAMETERS (TA = 25C) j50 90 120 j100 j25 60 S12 2.4 GHz 30 150 j10 S11 2.4 GHz 0 10 25 50 100 S22 .05 GHz 0 180 S12 0.5 GHz S21 0.5 GHz S11 .05 GHz -j10 -j25 -j100 FREQUENCY 6 -150 S11 S21 -30 8 -120 10 -90 -j50 NE94433 VCE = 10 V, IC = 5 mA .2 .25 0 4 Coordinates in Ohms Frequency in GHz (VCE = 10 V, IC = 5 mA) S22 2.4 GHz .1 .15 S21 2.4 GHz S12 S22 (MHz) MAG ANG MAG ANG MAG ANG MAG ANG 50 100 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 0.932 0.857 0.710 0.478 0.366 0.308 0.274 0.254 0.242 0.236 0.234 0.239 0.247 -14 -29 -51 -79 -98 -114 -128 -141 -155 -168 179 167 154 8.225 7.587 6.158 4.030 2.902 2.263 1.867 1.595 1.403 1.256 1.142 1.050 0.970 165 151 130 104 88 77 68 59 52 46 40 34 29 0.015 0.028 0.039 0.064 0.083 0.100 0.115 0.130 0.145 0.160 0.175 0.193 0.212 65 64 64 59 58 58 58 58 58 59 60 60 60 0.982 0.961 0.884 0.797 0.765 0.752 0.748 0.746 0.745 0.745 0.744 0.743 0.742 -4 -9 -14 -18 -20 -24 -28 -31 -36 -39 -44 -48 -53 10.530 9.392 7.081 4.323 3.043 2.349 1.927 1.639 1.438 1.283 1.165 1.070 0.987 0.916 162 145 123 99 85 74 65 57 50 44 38 33 28 23 0.014 0.025 0.037 0.059 0.079 0.095 0.109 0.125 0.141 0.156 0.173 0.194 0.214 0.239 62 60 62 60 60 60 61 61 62 62 63 64 64 63 0.967 0.942 0.851 0.772 0.750 0.739 0.738 0.736 0.738 0.738 0.738 0.737 0.736 0.732 10.472 8.553 5.730 3.358 2.394 1.877 1.558 1.337 1.178 1.055 0.959 0.882 0.813 0.753 156 136 115 95 83 72 63 55 48 42 36 31 26 22 0.014 0.024 0.035 0.055 0.073 0.089 0.105 0.121 0.139 0.158 0.178 0.202 0.225 0.254 65 64 59 62 61 63 64 66 66 67 68 68 67 66 0.969 0.915 0.840 0.790 0.773 0.763 0.758 0.756 0.754 0.753 0.752 0.748 0.744 0.737 -60 K MAG1 0.42 0.40 0.47 0.74 0.89 0.97 1.01 1.04 1.04 1.03 1.01 0.98 0.95 27.4 24.4 22.0 18.0 15.4 13.5 11.4 9.7 8.6 7.9 7.4 7.4 6.6 (dB) VCE = 10 V, lC = 10 mA 50 100 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 0.890 0.796 0.629 0.417 0.332 0.291 0.270 0.258 0.254 0.254 0.257 0.264 0.273 0.286 -19 -35 -60 -89 -109 -126 -141 -155 -169 179 167 156 144 134 -5 -10 -14 -17 -20 -23 -27 -31 -35 -39 -43 -48 -53 -57 0.44 0.46 0.55 0.81 0.92 0.99 1.03 1.04 1.02 1.00 0.98 0.94 0.91 0.87 28.7 25.7 22.8 18.6 15.9 13.9 11.4 10.0 9.3 8.7 8.3 7.4 6.6 5.8 0.36 0.45 0.72 0.96 1.06 1.11 1.13 1.12 1.10 1.07 1.03 0.99 0.96 0.94 28.7 25.6 22.2 17.9 13.7 11.2 9.5 8.3 7.4 6.6 6.3 6.4 5.6 4.7 VCE = 10 V, IC = 20 mA 50 100 200 400 600 800 1000 1200 1400 1600 1500 2000 2200 2400 0.828 0.685 0.445 0.347 0.302 0.285 0.278 0.278 0.281 0.286 0.295 0.304 0.317 0.329 -28 -48 -74 -105 -128 -146 -161 -175 173 162 151 142 132 123 -5 -10 -12 -16 -19 -23 -27 -32 -36 -41 -45 -50 -55 -60 Note: 1. Gain Calculations: MAG = |S21| |S12| (K K 2- 1 ). When K 1, MAG is undefined and MSG values are used. MSG = MAG = Maximum Available Gain MSG = Maximum Stable Gain 2 2 2 |S21| , K = 1 + | | - |S11| - |S22| , = S11 S22 - S21 S12 |S12| 2 |S12 S21| NE944 SERIES OUTLINE DIMENSIONS (Units in mm) PACKAGE OUTLINE 30 PACKAGE OUTLINE 30 RECOMMENDED P.C.B. LAYOUT 2.1 0.2 1.25 0.1 1.7 2 2.0 0.2 2 0.65 +0.1 0.3 -0.05 (ALL LEADS) 1.3 3 1 3 1.3 MARKING LEAD CONNECTIONS 1. Emitter 2. Base 3. Collector 0.15 0.9 0.1 0.65 0.6 1 0.8 +0.10 0.15 -0.05 0 to 0.1 PACKAGE OUTLINE 33 RECOMMENDED P.C.B. LAYOUT PACKAGE OUTLINE 33 +0.2 2.8 -0.3 2.4 2.9 0.2 0.95 2 2 1.9 3 +0.10 0.4 -0.05 (ALL LEADS) 3 1.9 1 +0.2 1.5 -0.1 +0.10 0.65 -0.15 0.95 LEAD CONNECTIONS 1. Emitter 2. Base 3. Collector 1.1 to 1.4 0.8 0 to 0.1 0.8 1 1.0 +0.10 0.16 -0.06 ORDERING INFORMATION PART NUMBER NE94430-T2 NE94433-T1B QUANTITY PACKAGING 3000 3000 Tape & Reel Tape & Reel EXCLUSIVE NORTH AMERICAN AGENT FOR RF, MICROWAVE & OPTOELECTRONIC SEMICONDUCTORS CALIFORNIA EASTERN LABORATORIES * Headquarters * 4590 Patrick Henry Drive * Santa Clara, CA 95054-1817 * (408) 988-3500 * Telex 34-6393 * FAX (408) 988-0279 24-Hour Fax-On-Demand: 800-390-3232 (U.S. and Canada only) * Internet: http://WWW.CEL.COM 9/13/2000 DATA SUBJECT TO CHANGE WITHOUT NOTICE