Specification	CD74HCT297E

Differential - Input:Output	False
Divider/Multiplier	False
Frequency - Max [Max]	55 MHz
Input	CMOS
Mounting Type	Through Hole
Number of Circuits	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Output	CMOS
Package / Case	0.3 in
Package / Case	16-DIP
Package / Case	7.62 mm
PLL	True
Ratio - Input:Output [custom]	1:1
Supplier Device Package	16-PDIP
Type	Phase Lock Loop (PLL)
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

CD74HCT297 Series

High Speed CMOS Logic Digital Phase-Locked-Loop

Part	Ratio - Input:Output [custom]	Type	Divider/Multiplier	Number of Circuits	PLL	Frequency - Max [Max]	Input	Differential - Input:Output	Supplier Device Package	Package / Case	Package / Case	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Output
Texas Instruments CD74HCT297E	1:1	Phase Lock Loop (PLL)		1		55 MHz	CMOS		16-PDIP	0.3 in	16-DIP	7.62 mm	4.5 V	5.5 V	-55 °C	125 °C	Through Hole	CMOS

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 3.66
		10	$ 3.29
		25	$ 3.11
		100	$ 2.69
		250	$ 2.56
		500	$ 2.29
		1000	$ 1.93
		2500	$ 1.84
		5000	$ 1.77
Texas Instruments	TUBE	1	$ 3.18
		100	$ 2.79
		250	$ 1.95
		1000	$ 1.57

Description

General part information

CD74HCT297 Series

The ’HC297 and CD74HCT297 are high-speed silicon gate CMOS devices that are pin-compatible with low power Schottky TTL (LSTTL).

These devices are designed to provide a simple, cost-effective solution to high-accuracy, digital, phase-locked-loop applications. They contain all the necessary circuits, with the exception of the divide-by-N counter, to build first-order phase-locked-loops.

Both EXCLUSIVE-OR (XORPD) and edge-controlled phase detectors (ECPD) are provided for maximum flexibility. The input signals for the EXCLUSIVE-OR phase detector must have a 50% duty factor to obtain the maximum lock-range.

Documents

Technical documentation and resources

CD54/74HC297, CD74HCT297 datasheet (Rev. B)

Data sheet