2N4856JAN/JANTX/JANTXV Series N-Channel JFETs 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4859JANTX 2N4860JANTX 2N4861JANTX 2N4856JANTXV 2N4857JANTXV 2N4858JANTXV 2N4859JANTXV 2N4860JANTXV 2N4861JANTXV Product Summary Part Number VGS(off) (V) V(BR)GSS Min (V) rDS(on) Max () ID(off) Max (pA) tON Typ (ns) 2N4856 -4 to -10 -40 25 250 9 2N4857 -2 to -6 -40 40 250 10 2N4858 -0.8 to -4 -40 60 250 20 2N4859 -4 to -10 -30 25 250 9 2N4860 -2 to -6 -30 40 250 10 2N4861 -0.8 to -4 -30 60 250 20 Features Benefits Applications Low On-Resistance: 2N4856 <25 Fast Switching--tON: 4 ns High Off-Isolation--ID(off): 5 pA Low Capacitance: 3 pF Low Insertion Loss N-Channel Majority Carrier FET Low Error Voltage High-Speed Analog Circuit Performance Negligible "Off-Error," Excellent Accuracy Good Frequency Response, Low Glitches Eliminates Additional Buffering High Radiation Tolerance Analog Switches Choppers Sample-and-Hold Normally "On" Switches Current Limiters Description The 2N4856JAN/JANTX/JANTXV all-purpose JFET analog switches offer low on-resistance, low capacitance, good isolation, and fast switching. Hermetically-sealed TO-206AA (TO-18) packaging allows full military processing (see Military Information). For similar products in TO-226AA (TO-92) and TO-236 (SOT-23) packages, see the J/SST111 series data sheet. For similar duals, see the 2N5564/5565/5566 data sheet. TO-206AA (TO-18) S 1 2 3 D G and Case Top View Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70244. Siliconix P-37515--Rev. B, 04-Jul-94 1 2N4856JAN/JANTX/JANTXV Series Absolute Maximum Ratings Gate-Drain, Gate-Source Voltage : (2N4856-58) . . . . . . . . . . . . . . . . . . -40 V (2N4859-61) . . . . . . . . . . . . . . . . . . -30 V Gate Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Lead Temperature (1/16" from case for 10 seconds) . . . . . . . . . . 300 _C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to 200_C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . -65 to 200_C Power Dissipationa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800 mW Notes a. Derate 10.3 mW/_C to TC > 25_C Specificationsa for 2N4856, 2N4857 and 2N4858 Limits 2N4856 2N4857 2N4858 Symbol Test Conditions Typb Min V(BR)GSS IG = -1 mA , VDS = 0 V -55 -40 VGS(off) VDS = 15 V, ID = 0.5 nA -4 -10 -2 -6 -0.8 -4 Saturation Drain Currentc IDSS VDS = 15 V, VGS = 0 V 50 175 20 100 8 80 mA Gate Reverse Current IGSS Parameter Max Min Max Min Max Unit Static Gate-Source Breakdown Voltage Gate-Source Cutoff Voltage Gate Operating Currentd Drain Cutoff Current IG ID(off) D( ff) VGS = -20 V, VDS = 0 V TA = 150_C -40 -40 V -5 -250 -250 -250 pA -13 -500 -500 -500 nA VDG = 15 V, ID = 10 mA -5 VDS = 15 V, VGS = -10 V 5 250 250 250 TA = 150_C 13 500 500 500 ID = 5 mA 0.25 ID = 10 mA 0.35 ID = 20 mA 0.5 Drain-Source On-Voltage VDS(on) VGS = 0 V Drain-Source On-Resistanced rDS(on) VGS = 0 V, ID = 1 mA Gate-Source Forward Voltaged VGS(F) IG = 1 mA , VDS = 0 V pA nA 0.5 0.5 V 0.75 25 40 60 W 0.7 V 6 mS 25 mS Dynamic Common-Source Forward Transconductance d gfs Common-Source Output Conductanced gos Common-Source Input Capacitance Ciss Common-Source Reverse Transfer Capacitance Crss Equivalent Input Noise Voltaged en VDG G = 20 V, ID = 1 mA f = 1 kHz 7 18 18 18 3 8 8 8 VDSS = 0 V, VGS = -10 V f = 1 MHz VDG = 10 V, ID = 10 mA f = 1 kHz pF nV Hz 3 Switching Turn-On Turn On Time Turn-Off Time 2 td(on) tr tOFF VDD = 10 V V, VGS(H) = 0 V See Switchingg Circuit 2 6 6 10 2 3 4 10 13 25 50 100 Siliconix P-37515--Rev. B, 04-Jul-94 ns 2N4856JAN/JANTX/JANTXV Series Specificationsa for 2N4859, 2N4860 and 2N4861 Limits 2N4859 Symbol Test Conditions Typb Min V(BR)GSS IG = -1 mA , VDS = 0 V -55 -30 VGS(off) VDS = 15 V, ID = 0.5 nA Parameter Max 2N4860 Min Max 2N4861 Min Max Unit Static Gate-Source Breakdown Voltage Gate-Source Cutoff Voltage Saturation Drain Currentc Gate Reverse Current Gate Operating Currentd Drain Cutoff Current Drain-Source On-Voltage IDSS IGSS IG ID(off) D( ff) VDS(on) TA = 150_C -30 V -4 VDS = 15 V, VGS = 0 V VGS = -15 V, VDS = 0 V -30 50 -10 -2 175 20 -6 -0.8 100 8 -4 80 mA -5 -250 -250 -250 pA -13 -500 -500 -500 nA VDG = 15 V, ID = 10 mA -5 VDS = 15 V, VGS = -10 V 5 250 250 250 TA = 150_C 13 500 500 500 ID = 5 mA 0.25 ID = 10 mA 0.35 ID = 20 mA 0.5 VGS = 0 V Drain-Source On-Resistance rDS(on) VGS = 0 V, ID = 1 mA Gate-Source Forward Voltage VGS(F) IG = 1 mA , VDS = 0 V pA nA 0.5 0.5 V 0.75 25 40 W 60 0.7 V 6 mS 25 mS Dynamic Common-Source Forward Transconductance d gfs Common-Source Output Conductanced gos Common-Source Input Capacitance Ciss Common-Source Reverse Transfer Capacitance Crss Equivalent Input Noise Voltaged en VDG G = 20 V, ID = 1 mA f = 1 kHz 7 18 18 18 3 8 8 8 VDSS = 0 V, VGS = -10 V f = 1 MHz VDG = 10 V, ID = 10 mA f = 1 kHz pF nV Hz 3 Switching Turn On Time Turn-On Turn-Off Time td(on) tr tOFF VDD = 10 V V, VGS(H) = 0 V See Switchingg Circuit 2 6 6 10 2 3 4 10 19 25 50 100 ns Notes a. TA = 25_C unless otherwise noted. b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. c. Pulse test: PW 100 ms duty cycle 10%. d. This parameter not registered with JEDEC. Siliconix P-37515--Rev. B, 04-Jul-94 NCB 3 2N4856JAN/JANTX/JANTXV Series Switching Time Test Circuit 4856/4859 4857/4860 4858/4861 -10 V -6 V -4 V VGS(L) RL* 464 953 1910 ID(on) 20 mA 10 mA 5 mA tr <20 ns tf <20 ns tOFF *Non-inductive $ !$ !$ &$ % !$ ' $ !$ !#&% $$%! !#&% #%! # %"! tr VDD RL OUT VGS(H) VGS(L) 1 k 51 VIN Scope 51 4 Siliconix P-37515--Rev. B, 04-Jul-94