74HC7046ADB

Phase-locked-loop with lock detector


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The 74HC/HCT7046 are high-speed Si-gate CMOS devices and are specified in compliance with JEDEC standard no. 7.

The 74HC/HCT7046 are phase-locked-loop circuits that comprise a linear voltage-controlled oscillator (VCO) and two different phase comparators (PC1 and PC2) with a common signal input amplifier and a common comparator input.

A lock detector is provided and this gives a HIGH level at pin 1 (LD) when the PLL is locked. The lock detector capacitor must be connected between pin 15 (CLD) and pin 8 (GND). The input signal can be directly coupled to large voltage signals, or indirectly coupled (with a series capacitor) to small voltage signals. A self-bias input circuit keeps small voltage signals within the linear region of the input amplifiers. With a passive low-pass filter, the “7046” forms a second-order loop PLL. The excellent VCO linearity is achieved by the use of linear op-amp techniques.

Features and benefits

  • Low power consumption
  • Centre frequency up to 17 MHz (typ.) at VCC = 4.5 V
  • Choice of two phase comparators:
    • EXCLUSIVE-OR
    • Edge-triggered JK flip-flop
  • Excellent VCO frequency linearity
  • VCO-inhibit control for ON/OFF keying and for low standby power consumption
  • Minimal frequency drift
  • Operation power supply voltage range:
    • VCO section 3.0 to 6.0 V
    • Digital section 2.0 to 6.0 V
  • Zero voltage offset due to op-amp buffering
  • Output capability: standard
  • ICC category: MSI

Applications

  • FM modulation and demodulation
  • Frequency synthesis and multiplication
  • Frequency discrimination
  • Tone decoding
  • Data synchronization and conditioning
  • Voltage-to-frequency conversion
  • Motor-speed control
All information on this product information page is subject to the subsequent disclaimers:
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Parametrics of this product

Type numberPackagePackage nameProduct statustpd(ns)VCC(V)FamilyPower dissipation considerationsLogic switching levelsOutput drive capability(mA)fmax(MHz)Description
74HC7046ADBSOT338-1
(SSOP16)		SSOP16Production173.0 - 6.0HC(T)lowCMOS+/- 5.219PLL with lock detector

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
74HC7046ADB74HC7046ADB,1129351 902 40112Volume productionSOT338-1
(SSOP16) 		TubeC7046A
74HC7046ADB74HC7046ADB,1189351 902 40118Volume productionSOT338-1
(SSOP16) 		Reel Pack, SMD, 13"C7046A

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT338-1SSOP16plastic shrink small outline package; 16 leads; body width 5.3 mmMO-150 (JEDEC); 2003-02-19

Related documents

Reflow soldering

Wave soldering

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
74HC7046ADB74HC7046ADB,11274HC7046ADBweek 12, 20056.621.5105740181268883E811
74HC7046ADB74HC7046ADB,11874HC7046ADBweek 12, 20056.621.5105740181268883E811
Quality and reliability disclaimer

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Documentation for this product

File nameTitleTypeFormatDate
74HC_HCT7046A_CNVPhase-locked-loop with lock detectorData sheetpdf1990-12-01
AN11044Pin FMEA 74HC/74HCT familyApplication notepdf2011-03-16
AN252Live Insertion Aspects of Philips Logic FamiliesApplication notepdf2013-03-13
HCT_USER_GUIDEHC/T User GuideUser manualpdf1997-11-01

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
74HC7046ADB9351 902 4011274HC7046ADB,112      not available
74HC7046ADB9351 902 4011874HC7046ADB,118NADIGI-KEY CORPORATION1,9865/18/2013Buy onlinenot available
   JAPANCHIP ONE STOP10005/20/2013Buy online 

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