HEF 4528B MSI DUAL MONOSTABLE MULTIVIBRATOR The HEF 45288 is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW input (Ig), and active HIGH input (14), an active LOW clear direct input (Cp), an output (0) and its complement (O), and two pins for connecting the external timing components (Cr,* RCtT). An external timing capacitor (C;) must be connected between Ctc and RCT and an external resistor {Rq) must be connected between RCT and. Vpp. The duration of the output pulse is determined by the external timing components C; and Ry. A HIGH to LOW transition on Ig when |1 is LOW or a LOW to HIGH transition on 14 when Ig is HIGH produces a positive pulse (LOW-HIGH-LOW) on O and a negative pulse (HIGH-LOW-HIGH) on 0 if the Cp is HIGH; A LOW on Cp forces O LOW, O HIGH and inhibits any further pulses until Cp is HIGH. a|RCTo Aa [re] [rs] fra] [x3] fi2] [14] fro} [9] al Yop CTcB! Cpp lie op OB Og Ctca | RCTCB RCTCA ctca| Coa tia lon OM Ga Vos Ly 2] i3y 4 bs tel (zt [8] 72843493 HEF 45288 Fig. 2 Pinning diagram. HEF4528BP(N): 16-lead DIL; plastic (SOT38-1) 14/RCtcB HEF4528BD(F): 16-lead DIL: ceramic (cerdip) (SOT74) 15 HEF4528BT(D): 16-lead SO; plastic (SOT109-1) | Cres (): Package Designator North America _ Oplio PINNING pop _y Toa. lop input (HIGH to LOW triggered) 12 _ . . Oslo ay 1B input (LOW to HIGH triggered) 18 Cpa. Cop clear direct input (active LOW) _ Og, Og output 13) Coy B Ca, Og complementary output (active LOW) Crca Crop external capacitor connections 7282336. RCtcaA, external capacitor/ Fig. 1 Functional diagram. RCrce resistor connections * Always connected to ground. FAMILY DATA | see Family Specifications Ipp LIMITS category Msi! ) (sean 577I HEF 4528B Msi ==)Dual monostable multivibrator FUNCTION TABLE inputs outputs To {14 |p | a] 6 we H SLIU HS H np X EXPEL L JH A.C, CHARACTERISTICS HEF4528B MSI H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage} X = state is immaterial / = positive-going transition = negative-going transition JL! = positive or negative output pulse; width is determined by Cy and Ry Vss = 0 V: Tamb = 25 OC; Cy = 50 pF; input transition times < 20 ns Voo . typical extrapolation v symbol | min. typ. max. formula Prapagation delays To. !4 = 3 5 140 280 ns | 113 ns + (0,55 ns/pF) CL HIGH to LOW 10 | ten 50 8100) ns | 39ns + (0,23 ns/pF} Cy . 15 35 70 ns 27 ns + (0,16 ns/pF) CL Yo. yO 5 155 305 ~ons_ | 128 ns + (0,55 ns/pF) Cy, LOW to HIGH 10 | tpty 60 115 ns | 49ns+ (0,23 ns/pF) CL 15 40 80 ons 32 ns + (0,16 ns/pF) CL. tp > 0 5 105 210 sons | 78 ns + (0,55 ns/pF) Cy. HIGH to LOW 10 | tea 40 85 ns 29 ns + (0,23 ns/pF) Cy 15 30 60s ns 22 ns + (0,16 ns/pF} CL Cp 6 5 120 240 ons | 93 ns + (0,55 ns/pF) Cy LOW to HIGH 10 jtpLy 50 105 ons | 39ns + (0,23 ns/pF) CL 15 35 70 ons 27 ns + (0,16 ns/pF) Ci Output transition 5 60 120 ns} 10ns+ {1,0.ns/pF) Cy, times 10) | tTHe 30 60 ns 9 ns + (0,42 ns/pF) CL HIGH to LOW 15 20 40 ons Gns + (0,28 ns/pF) CL 5 60 120 ns | 10ns# (1,0.ns/pF) CL LOW to HIGH 10 | tro 30 60 ns} 9ns+{042ns/pF) Cy 15 20 40 ons 6 ns + (0,28 ns/pF) CL A.C, CHARACTERISTICS Vsg = 0 V; Tamb = 25 OC; input transition times < 20 ns; Ry = 5 k&2; Cy = 15 pF Vpp Vv typical formula for P (uW) Dynamic power dissipation per package (P) 5 10 15 4000 fj + DlfoCL) x Vpp? 20000 fj + Z(f9CL) x Vpn 59 000 fj, + LifoC_) x Vpp? where fj = input freq. (MHz) fg = output freq. (MHz) Ci = load capacitance (pF) L(fgC_) = sum of outputs Vop = supply voltage {V) ) (sm 4995 579HEF 4528B MsI A.C. CHARACTERISTICS Vgg = 0 V; Tamb = 25 OC; Cy. = 50 pF; input transition times < 20 ns; see also waveforms Fig. 5. VpD symbol | min, typ. = max. Recovery time 5 Oo -75 ns for Cp 10 | trep 0 -30 ns 15 0 -25 ns Minimum Tg 5 50 25 ns pulse width; LOW 10 | twiot 30 15 ns 15 20 10 ns Minimum ty 5 50 = 25 ns pulse width; HIGH 10 | twiik 30 15 ns 15 20 10 ns Minimum Cp 5 60 30 ns pulse width; LOW 10 | twepL | 35 15 ns 15 25 10 ns Set-up time 5 0 105 ns . Ep = Torts | 10 |ty | 0 40 ns | to avoid change 15 0 -25 ns p Output O pulse 5 - 235 ns width; HIGH 10 | twou - 155 ns | note 1 15 - 140 ns L Output O pulse 5 - 5,45 BS width; HIGH 10 | twou - 495 us note 2 15 ~ 4,85 us { Change in output O 5 - +3 % pulse width over 10 | Atwo _ 42 % note 3 temperature 15 = +2 % Change in output O 5 _ +2 % pulse width over 10 | Atwo - +1 % Vpp + 5% Vop 15 _ +1 % External timing 5 5 - 2000 = kQ resistor 10 | Ry 5 - 2000 kQ 15 5 ~ 2000 = kQ External timing 5 no limits capacitor 10 | Cy no limits 15 no limits Notes 1. Ry = 5k; Cy = 15 pF; for other Ry, Cy combinations and C, < 0,01 uF see graph Fig. 4. 2. Ry = 10 k82; C, = 1000 pF; for other Ry, C, combinations and C; > 0,01 uF use formula two = K. Ry. Cx. where: two = output pulse width (s) K = 0,42 for Vpp = 5 V. Re = external timing resistor (Q) K = 0,32 for Vpp = 10 V = external timing capacitor (F) K = 0,30 for Vpp = 15 V 3. Tamb = 40 to +85 C; Atwo is referenced to two at Tamb = 25 C. 580 =\(Dual monostable multivibrator HEF 4528B MSI 7272961.1 103 two }re=100 kQ (us) 102 R,=10kQ Rp=5kQ 10 10-1 10 102 103, (pF) 104 Fig. 4 Output pulse width (two) as a function of external timing capacitor (C,). | (sn 1995 581HEF 45288 Msi Cp INPUT 50% Ig INPUT (ly = LOW) 4) INPUT (ig = HIGH} 7275415 Fig. 5 Waveforms showing minimum Io, 14 and O pulse widths, set-up and recovery times. Set-up and recovery times are shown as positive values but may be specified-as negative Values. APPLICATION INFORMATION An example of an application for the HEF4528B is: @ Non-retriggerable monostable multivibrator \=97) 0 4 ro) 7284350 Fig. 6 Two examples for a non-retriggerable monostable multivibrator using half of HEF4528B (LOW to HIGH and HIGH to LOW triggered). se amayie \(