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U847BST TELEFUNKEN Semiconductors Rev. A1, 05-Sep-96 1 (5) 1.3-GHz Prescaler for CATV Tuners Technology: Bipolar Features TTL output ESD protected Low current consumption High input sensitivity Slope steepness of the output level adjustable at Pin 6 Case: 8-pin dual-inline plastic Block Diagram 88 6307 e V S 256 TTL Symmetrical Input 4 3 N.C. 8 6 7 N.C. 5 Output Figure 1. Block diagram

U847BST TELEFUNKEN Semiconductors Rev. A1, 05-Sep-96 2 (5) Absolute Maximum Ratings Parameters Symbol Value Unit Supply voltage Pin 4 V S 6 V Input-voltage range Pins 1 and 2 V i 0 to V S V Junction temperature T j 125 ° C Storage-temperature range T stg –40 to +125 ° C Ambient-temperature range T amb –25 to +70 ° C Thermal Resistance Parameters Symbol Maximum Unit Junction ambient R thJA 100 K/W Pin Connection Pin Function 1, 2 Input 4 Supply voltage (V S ) 5 Output Pin Function 6 Open or capacitor-to-ground 8 Ground 3, 7 Not connected Note: In order to avoid damage, the prescaler must be handled as a MOS device. The device is self-oscillating without input signal. Electrical Characteristics V S = 4.5 to 5.5 V, T amb = 0 to +70 ° C, unless otherwise specified Parameters Test Conditions / Pin Symbol Min. Typ. Max. Unit Supply current V S = 5 V Pin 4 I S 35 48 mA Input sensitivity 1) R G = 50 f i = 70 MHz Pins 1 and 2 V i 6 10 mV f i = 150 to 1000 MHz V i 1 5 mV f i = 1300 MHz V i 4 20 mV Large-signal compatibility 1) R G = 50 Pins 1 and 2 V i 300 mV Frequency range f imin 70 MHz f imax 1300 MHz TTL output Pin 5 High level I OH = 0.2 mA V OH 3.3 V Low level I OL = –2 mA V OL 0.4 V 1) RMS voltage calculated from the available power measured

U847BST TELEFUNKEN Semiconductors Rev. A1, 05-Sep-96 3 (5) Figure 2. Test circuit Figure 3. TTL output circuit

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U847BST TELEFUNKEN Semiconductors Rev. A1, 05-Sep-96 4 (5) Dimensions in mm Package: DIP8

U847BST TELEFUNKEN Semiconductors Rev. A1, 05-Sep-96 5 (5) Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice . Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423

This datasheet has been downloaded from: www.DatasheetCatalog.com Datasheets for electronic components.

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