MC74HC4046A ON Semiconductor, MC74HC4046A Datasheet
MC74HC4046A
Available stocks
Related parts for MC74HC4046A
MC74HC4046A Summary of contents
Page 1
... MC74HC4046A Phase−Locked Loop High−Performance Silicon−Gate CMOS The MC74HC4046A is similar in function to the MC14046 Metal gate CMOS device. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The HC4046A phase−locked loop contains three phase comparators, a voltage− ...
Page 2
... MC74HC4046A Name and Function Phase Comparator Pulse Output Phase Comparator 1 Output ...
Page 3
... Disable Time to PC2 (Figures 3 and 4) PHZ OUT t , Maximum Propagation Delay, SIG PZH t Enable Time to PC2 (Figures 3 and 4) PZL OUT t , Maximum Output Transition Time TLH t (Figure 2) THL MC74HC4046A (Voltages Referenced to GND Test Conditions − 0.1 V 2.0 out CC | ≤ 4.5 out 6 0 − 0 ...
Page 4
... Symbol Parameter Df/T Frequency Stability with Temperature Changes (Figure 14A VCO Center Frequency (Duty Factor = 50%) (Figure 15A DfVCO VCO Frequency Linearity ∂ VCO Duty Factor at VCO OUT MC74HC4046A (Voltages Referenced to GND Test Conditions − 0.1 V 3.0 out CC | ≤ 4.5 out 6 ...
Page 5
... MC74HC4046ANG MC74HC4046AD MC74HC4046ADG MC74HC4046ADR2 MC74HC4046ADR2G MC74HC4046ADT MC74HC4046ADTG MC74HC4046ADTR2 MC74HC4046ADTR2G MC74HC4046AF MC74HC4046AFG MC74HC4046AFEL MC74HC4046AFELG †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *This package is inherently Pb−Free. MC74HC4046A V CC ...
Page 6
... PC1 OUT OUT PC3 50% OUT OUTPUTS 10% t THL Figure 2. SIG IN 50% INPUT COMP IN 50% INPUT t PLZ t PZL PC2 50% OUT OUTPUT 10% Figure 4. MC74HC4046A SWITCHING WAVEFORMS SIG INPUT 50% GND COMP t IN PLH INPUT t PZH PC2 OUT 50% OUTPUT t TLH V CC GND V DEVICE CC UNDER ...
Page 7
... LS−TTL fan out of 10. The VCO output is approximately a square wave. This output can either directly feed the COMP of the phase comparators or IN MC74HC4046A the comparators, the oscillator logic flips the ref capacitor which causes the mirror to charge the opposite side of the capacitor ...
Page 8
... IN IN frequency equal the VCO input This min requires the phase detector output to be grounded; hence, the MC74HC4046A outputs of these comparators are essentially standard 74HC and outputs (comparator 2 is TRI−STATEABLE). In normal IN operation V and ground voltage levels are fed to the loop CC filter ...
Page 9
... Phase comparator 2 is more susceptible to noise, causing the PLL to unlock noise pulse is seen on the SIG comparator treats it as another positive edge of the SIG MC74HC4046A and will cause the output to go high until the VCO leading edge is seen, potentially for an entire SIG would cause the VCO to speed up during that time ...
Page 10
... 100 pF ∞; V VCOIN −15 −100 − AMBIENT TEMPERATURE (°C) Figure 13B. Frequency Stability versus Ambient Temperature 4 MC74HC4046A V =3 4 1/2 V +1.0 V −4.0 CC 1/2V − 500 COMP with Figure 12. Input Current at SIG ...
Page 11
... VCO Input Voltage (V 2 1.0 mF 4.5 V 1.0 6 4.5 V 6.0 V −1 3.0 V −2 (kW) Figure 15A. Frequency Linearity versus R1, C1 and V CC MC74HC4046A 3.0 3.5 4 Function Figure 14B. VCO Frequency (f ) ...
Page 12
... 3 4 (pF) Figure 20. Frequency Offset versus C1 MC74HC4046A 25° ...
Page 13
... R1=3.0 kW R1= R1=20 kW R1= R1=40 kW R1=50 kW 5.0 R1=100 kW C1=39 pF R1=300 1 kW) Figure 22. R2 versus f 20 C1= 1.0 Figure 24. R2 versus Frequency Lock Range (2f MC74HC4046A 8.0 6.0 4.0 2.0 0 −2 Figure 23. R2 versus f max kW) http://onsemi.com ...
Page 14
... Determine R1−C1 the VCO operation) from Figure 22. • Calculate value of R1 from the value of C1 and the product of R1C1 from Figure 22. (see Figure 25 for characteristics of the VCO operation) MC74HC4046A Phase Comparator 2 = ∞ • Given f • Given f0 and fL and f0 max • ...
Page 15
... PL 0.25 (0.010) M −A− −B− −T− SEATING PLANE 0.25 (0.010 MC74HC4046A PACKAGE DIMENSIONS PDIP−16 N SUFFIX CASE 648−08 ISSUE T L SEATING −T− PLANE SOIC−16 D SUFFIX CASE 751B−05 ISSUE ...
Page 16
... L PIN 1 IDENT. 1 0.15 (0.006 −V− C 0.10 (0.004) SEATING −T− D PLANE MC74HC4046A PACKAGE DIMENSIONS TSSOP−16 DT SUFFIX CASE 948F−01 ISSUE Ç Ç Ç 9 É É É Ç Ç Ç J1 É É É Ç Ç Ç ...
Page 17
... VIEW 0.10 (0.004) 0.13 (0.005) M MC74HC4046A PACKAGE DIMENSIONS SOEIAJ−16 F SUFFIX CASE 966−01 ISSUE DETAIL P c http://onsemi.com 17 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS AND ARE MEASURED AT THE PARTING LINE ...
Page 18
... USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 18 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. MC74HC4046A/D ...