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ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsN/A 74 HCT 4046 AE Case type DIP16 Type (misc.) PLL with VCO 74 HCT 4046 AE Case typ
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SEMICONDUCTOR
1
Features
• Operating Frequency Range
- Up to 18MHz (Typ) at V
CC
= 5V
- Minimum Center Frequency of 12MHz at V
CC
= 4.5V
• Choice of Three Phase Comparators
- EXCLUSIVE-OR
- Edge-Triggered JK Flip-Flop
- Edge-Triggered RS Flip-Flop
• Excellent VCO Frequency Linearity
• VCO-Inhibit Control for ON/OFF Keying and for Low
Standby Power Consumption
• Minimal Frequency Drift
• Operating Power Supply Voltage Range
- VCO Section . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 6V
- Digital Section . . . . . . . . . . . . . . . . . . . . . . . . 2V to 6V
• Fanout (Over Temperature Range)
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55
o
C to 125
o
C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30% of V
CC
at V
CC
= 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
≤ 1µA at V
OL
, V
OH
Description
The Harris CD74HC4046A and CD74HCT4046A are high-
speed silicon-gate CMOS devices that are pin compatible with
the CD4046B of the “4000B” series. They are specified in
compliance with JEDEC standard number 7.
The CD74HC4046A and CD74HCT4046A are phase-locked-
loop circuits that contain a linear voltage-controlled oscillator
(VCO) and three different phase comparators (PC1, PC2 and
PC3). A signal input and a comparator input are common to
each comparator.
The signal input can be directly coupled to large voltage sig-
nals, 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 4046A forms a second-order loop
PLL. The excellent VCO linearity is achieved by the use of lin-
ear op-amp techniques.
Applications
• FM Modulation and Demodulation
• Frequency Synthesis and Multiplication
• Frequency Discrimination
• Tone Decoding
• Data Synchronization and Conditioning
• Voltage-to-Frequency Conversion
• Motor-Speed Control
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C) PACKAGE
PKG.
NO.
CD74HC4046AE -55 to 125 16 Ld PDIP E16.3
CD74HCT4046AE -55 to 125 16 Ld PDIP E16.3
CD74HC4046AM -55 to 125 16 Ld SOIC M16.15
CD74HCT4046AM -55 to 125 16 Ld SOIC M16.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local sales office or
Harris customer service for ordering information.
February 1998
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1998
File Number 1854.1
CD74HC4046A,
CD74HCT4046A
High-Speed CMOS Logic
Phase-Locked-Loop with VCO

Summary of content (20 pages)