HEF 40106B gates HEX INVERTING SCHMITT TRIGGER Each circuit of the HEF40106B functions as an inverter with Schmitt-trigger action. The Schmitt- trigger switches at different points for the positive and negative-going input signals. The difference between the positive-going voltage (Vp) and the negative-going voltage (Vy) is defined as hysteresis voltage (V}4). This device may be used for enhanced noise immunity or to square up" slowly changing waveforms. ! 0 HT" 4 oO 31.2) Tp 4 ssl p-3is ' 0 eS) 1 eS 1 oO 11] 's WD bets isle f > poet 7274608.1 Fig. 1 Functional diagram. FAMILY DATA ipp LIMITS category GATES fal fs) 2} fa) fro} 9] [3] Von '6 [ '5s O5 4 O4 ) HEF 401068 11 Oy !2 O02 I3 93 Vgs LJ 2] (3) 4d tel tel 12 7274609 Fig. 2 Pinning diagram. HEF40106BP(N): 14-lead DIL; plastic (SOT27-1) HEF40106BD(F): 14-lead DIL; ceramic (cerdip} (SOT73) HEF40106BT(D): 14-lead SO; plastic (SOT108-1} (): Package Designator North America haw p >of >o-o, 7284164 Fig. 3 Logic diagram (one inverter). see Family Specifications \=HEF 40106B gates D.C. CHARACTERISTICS Vss = 0 V; Tamp = 25 OC Vpo symbol min. typ. max. Hysteresis 5 0,5 08 Vv voltage 10 Vy 0,7 1,3 Vv : 15 0,9 1,8 Vv Switching levels 5 2 3,0 3,5 Vv positive-going 10 Vp 3,7 58 7 Vv input voltage 15 49 8,3 11 Vv negative-going 5 1,5 2,2 3 Vv input voltage 10 VN 3 45 6,3 Vv 15 4 6,5 10,1 Vv Vo =] fe Vy Vp 7Z69995 2 Fig. 4 Transfer characteristic. Vo 7Z84130.1 Fig. 5 Waveforms showing definition of Vp, Vjy and Vy, where Vy and Vp are between limits of 30% and 70%. 74 seo ) (Hex inverting Schmitt trigger HEF 40106B gatas A.C. CHARACTERISTICS Vgs = 0 V; Tamb = 25 OC; Cy = 50 pF; input transition times < 20 ns Vpob typical extrapolation Vv symbol | typ. max. formula Propagation delays In * On 5 90 180 ons 63 ns + (0,55 ns/pF) Cy HIGH to LOW 10 teyy | 35 70 ons 24 ns + (0,23 ns/pF) Cy 15 30 60 ons 22 ns + (0,16 ns/pF) Cy 5 75 150 ons 48 ns + (0,55 ns/pF} Cy LOW to HIGH 10 tpLH | 35 70 ons | 24ns + (0,23 ns/pF) CL 15 30 60 ns 22 ns + (0,16 ns/pF} Cy Output transition times 5 60 120 ons 10 ns + (1,0 n3/pF) Cy HIGH to LOW 10 trH_ | 30 60 ons 9 ns + (0,42 ns/pF) Cy 15 20 40 ns 6 ns + (0,28-ns/pF)-Cy 5 60 120 ns 10 ns + (1,0 ns/pF) Cy LOW to HIGH 10 trtH | 30 60 ns 9 ns + (0,42 ns/pF) Cy 15 20 40 ns 6 ns + (0,28 ns/pF) Cy. Voo . where Vv typical formula for P (uW) f; = input freq. (MHz) fo = output freq. (MHz) Dynamic power 5 2300 f+ Z(fgCL) x Vop? | Cy = load capacitance (pF) dissipation per 10 9000 fj + Z(f9CL) x Vop X(foCz_} = sum of outputs package {P} 15 20 000 f, + Z(fpCL) x Vpp? | Vpp = supply voltage {V) \=HEF 40106B gates 100 7284167 1000 7284168 Ip 'p (uA) (uA) 50 500 0 QO 0 25 Viiv) 0 5 viv) 10 Fig. 6 Typical drain current as a function of input voltage; Vpp = 5 V; Tamb = 25 OC. 2000 7284169 (uA) 1000 0 0 10 Fig. 8 Typical drain current as a function of input voltage; Vpp = 15 V; Tamb = 25 OC. V,(v) 20 Fig. 7 Typical drain current as a function of input voltage; Vpp = 10 V; Tamp = 25 OC. 776 January ws) (Hex inverting Schmitt trigger HEF 40106B 10 {v) 2,5 7,5 12,5 Vop (VY) 17,5 Fig. 9 Typical switching levels as a function of supply voltage Vop; Tamb = 25 OC. Cp ---dk---; t R 1 pl} c 7284165 Fig. 10 Schmitt trigger driven via a high impedance (R > 1 k&2). If a Schmitt trigger is driven via a high impedance (R > 1 kQ) then it is necessary to incorporate a . C _ Vop-Vss . ayes capacitor C of such value that: a > We otherwise oscillation can occur on the edges of a pulse. p H Cp is the external parasitic capacitance between input and output; the value depends on the circuit board layout. ) (sea 1995 777HEF40106B gates APPLICATION INFORMATION Some examples of applications for the HEF40106B are: @ Wave and pulse shapers Astable multivibrators @ Monostable multivibrators. % 7284166 Fig. 11. The HEF401068 used as an astable multivibrator.