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INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
* The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC * The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC
HEF4528B MSI Dual monostable multivibrator
Product specification File under Integrated Circuits, IC04 January 1995
Philips Semiconductors
Product specification
Dual monostable multivibrator
DESCRIPTION The HEF4528B is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW input (I0), and active HIGH input (I1), an active LOW clear direct input (CD), an output (O) and its complement (O), and two pins for connecting the external timing components (CTC(1), RCTC). An external timing capacitor (Ct ) must be connected between CTC and RCTC and an external resistor (Rt) must be connected between RCTC and VDD. The duration of the
(1) Always connected to ground.
HEF4528B MSI
output pulse is determined by the external timing components Ct and Rt. A HIGH to LOW transition on I0 when I1 is LOW or a LOW to HIGH transition on I1 when I0 is HIGH produces a positive pulse (LOW-HIGH-LOW) and O and a negative pulse (HIGH-LOW-HIGH) on O if the CD is HIGH. A LOW
Fig.2 Pinning diagram.
HEF4528BP(N): HEF4528BD(F): HEF4528BT(D):
16-lead DIL; plastic (SOT38-1) 16-lead DIL; ceramic (cerdip) (SOT74) 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America PINNING I0A, I0B I1A, I1B CDA, CDB OA, OB OA, OB CTC A, CTC B RCTC A, RCTC B input (HIGH to LOW triggered) input (LOW to HIGH triggered) clear direct input (active LOW) output complementary output (active LOW) external capacitor connections (1) external capacitor/ resistor connections
Fig.1 Functional diagram. on CD forces O LOW, O HIGH and inhibits any further pulses until CD is HIGH.
FAMILY DATA, IDD LIMITS category MSI See Family Specifications
January 1995
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Philips Semiconductors
Product specification
Dual monostable multivibrator
HEF4528B MSI
Fig.3 Logic diagram (one monostable multivibrator).
January 1995
3
Philips Semiconductors
Product specification
Dual monostable multivibrator
FUNCTION TABLE INPUTS I0 H X Notes 1. H = HIGH state (the more positive voltage) 2. L = LOW state (the less positive voltage) 3. X = state is immaterial 4. 5. 6. = positive-going transition = negative-going transition = positive or negative output pulse; width is determined by Ct and Rt X I1 L CD H H L L H OUTPUTS O O
HEF4528B MSI
AC CHARACTERISTICS VSS = 0 V; Tamb = 25 C; CL = 50 pF; input transition times 20 ns VDD V Propagation delays I0, I1 O HIGH to LOW I0, I1 O LOW to HIGH CD O HIGH to LOW CD O LOW to HIGH Output transition times HIGH to LOW LOW to HIGH 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 tTLH tTHL tPLH tPHL tPLH tPHL 140 50 35 155 60 40 105 40 30 120 50 35 60 30 20 60 30 20 280 100 70 305 115 80 210 85 60 240 105 70 120 60 40 120 60 40 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 113 ns + (0,55 ns/pF) CL 39 ns + (0,23 ns/pF) CL 27 ns + (0,16 ns/pF) CL 128 ns + (0,55 ns/pF) CL 49 ns + (0,23 ns/pF) CL 32 ns + (0,16 ns/pF) CL 78 ns + (0,55 ns/pF) CL 29 ns + (0,23 ns/pF) CL 22 ns + (0,16 ns/pF) CL 93 ns + (0,55 ns/pF) CL 39 ns + (0,23 ns/pF) CL 27 ns + (0,16 ns/pF) CL 10 ns + (1,0 ns/pF) CL 9 ns + (0,42 ns/pF) CL 6 ns + (0,28 ns/pF) CL 10 ns + (1,0 ns/pF) CL 9 ns + (0,42 ns/pF) CL 6 ns + (0,28 ns/pF) CL SYMBOL MIN. TYP. MAX. TYPICAL EXTRAPOLATION FORMULA
January 1995
4
Philips Semiconductors
Product specification
Dual monostable multivibrator
AC CHARACTERISTICS VSS = 0 V; Tamb = 25 C; input transition times 20 ns; Rt = 5 k; Ct = 15 pF VDD V Dynamic power dissipation per package (P) 5 10 15 TYPICAL FORMULA FOR P (W) 4000 fi + (foCL) x VDD2 20 000 fi + (foCL) x VDD
2
HEF4528B MSI
where fi = input freq. (MHz) fo = output freq. (MHz) CL = load capacitance (pF) (foCL) = sum of outputs VDD = supply voltage (V)
59 000 fi + (foCL) x VDD2
AC CHARACTERISTICS VSS = 0 V; Tamb = 25 C; CL = 50 pF; input transition times 20 ns; see also waveforms Fig.5. VDD V Recovery time for CD Minimum I0 pulse width; LOW Minimum I1 pulse width; HIGH Minimum CD pulse width; LOW Set-up time CD I0 or I1 Output O pulse width; HIGH Output O pulse width; HIGH Change in output O pulse width over temperature Change in output O pulse width over VDD January 1995 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 tWO tWO tWOH tWOH tsu tWCDL tWI1H tWI0L tRCD SYMBOL MIN. 0 0 0 50 30 20 50 30 20 60 35 25 0 0 0 - - - - - - - - - - - - 5 TYP. -75 -30 -25 25 15 10 25 15 10 30 15 10 -105 -40 -25 235 155 140 5,45 4,95 4,85 3 2 2 2 1 1 MAX. ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns s s s % % % % % % VDD 5% note 3 note 2 note 1 to avoid change in output
Philips Semiconductors
Product specification
Dual monostable multivibrator
HEF4528B MSI
MIN. 5 TYP. - - - no limits no limits no limits MAX. 2000 2000 2000 k k k
VDD V External timing resistor External timing capacitor 5 10 15 5 10 15 Notes
SYMBOL
Rt
5 5
Ct
1. Rt = 5 k; Ct = 15 pF; for other Rt, Ct combinations and Ct < 0,01 F see graph Fig.4. 2. Rt = 10 k; Ct = 1000 pF; for other Rt, Ct combinations and Ct > 0,01 F use formula tWO = K.Rt.Ct. where: tWO = output pulse width (s) Rt = external timing resistor () Ct = external timing capacitor (F) K = 0,42 for VDD = 5 V K = 0,32 for VDD = 10 V K = 0,30 for VDD = 15 V 3. Tamb = -40 to +85 C; tWO is referenced to tWO at Tamb = 25 C.
January 1995
6
Philips Semiconductors
Product specification
Dual monostable multivibrator
HEF4528B MSI
Fig.4 Output pulse width (tWO) as a function of external timing capacitor (Ct).
January 1995
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Philips Semiconductors
Product specification
Dual monostable multivibrator
HEF4528B MSI
Fig.5
Waveforms showing minimum I0, I1 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
Fig.6
Two examples for a non-retriggerable monostable multivibrator using half of HEF4528B (LOW to HIGH and HIGH to LOW triggered).
January 1995
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