SN74LS297N

SN54LS297, SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERS SDLS155 – JANUARY 1981 – REVISED MARCH 1988 Copyright  1988, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54LS297, SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERS SDLS155 – JANUARY 1981 – REVISED MARCH 1988 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54LS297, SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERS SDLS155 – JANUARY 1981 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54LS297, SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERS SDLS155 – JANUARY 1981 – REVISED MARCH 1988 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54LS297, SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERS SDLS155 – JANUARY 1981 – REVISED MARCH 1988 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN54LS297, SN74LS297 DIGITAL PHASE-LOCKED-LOOP FILTERS SDLS155 – JANUARY 1981 – REVISED MARCH 1988 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) (3) Device Marking (4/5) (6) SN74LS297N ACTIVE PDIP N 16 25 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74LS297N (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of