PDF MC10E137 Data sheet ( Hoja de datos )

Número de pieza	MC10E137
Descripción	8-BIT RIPPLE COUNTER
Fabricantes	Motorola Semiconductors
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No Preview Available ! MOTOROLA SEMICONDUCTOR TECHNICAL DATA 8ĆBit Ripple Counter The MC10E/100E137 is a very high speed binary ripple counter. The two least significant bits were designed with very fast edge rates while the more significant bits maintain standard ECLinPS™ output edge rates. This allows the counter to operate at very high frequencies while maintaining a moderate power dissipation level. • 1.8GHz Minimum Count Frequency • Differential Clock Input and Data Output Pins • VBB Output for Single-Ended Use • Internal 75kΩ Input Pulldown Resistors • Synchronous and Asynchronous Enable Pins • Asynchronous Master Reset • Extended 100E VEE Range of –4.2V to –5.46V MC10E137 MC100E137 8-BIT RIPPLE COUNTER The device is ideally suited for multiple frequency clock generation as well as a counter in a high performance ATE time measurement board. Both asynchronous and synchronous enables are available to maximize the device’s flexibility for various applications. The asynchronous enable input, A_Start, when asserted enables the counter while overriding any synchronous enable signals. The E137 features XORed enable inputs, EN1 and EN2, which are synchronous to the CLK input. When only one synchronous enable is asserted the counter becomes disabled on the next CLK transition; all outputs remain in the previous state poised for the other synchronous enable or A_Start to be asserted to re-enable the counter. Asserting both synchronous enables causes the counter to become enabled on the next transition of the CLK. If EN1 (or EN2) and CLK edges are coincident, sufficient delay has been inserted in the CLK path (to compensate for the XOR gate delay and the internal D-flip flop setup time) to insure that the synchronous enable signal is clocked correctly, hence, the counter is disabled. The E137 can also be driven single-endedly utilizing the VBB output supply as the voltage reference for the CLK input signal. If a single-ended signal is to be used the VBB pin should be connected to the CLK input and bypassed to ground via a 0.01µF capacitor. VBB can only source/sink 0.5mA, therefore it should be used as a switching reference for the E137 only. FN SUFFIX PLASTIC PACKAGE CASE 776-02 PIN NAMES PIN FUNCTION CLK, CLK Q0-Q7, Q0-Q7 A_Start EN1, EN2 MR VBB Differential Clock Inputs Differential Q Outputs Asynchronous Enable Input Synchronous Enable Inputs Asynchronous Master Reset Switching Refernce Output All input pins left open will be pulled LOW via an input pulldown resistor. Therefore, do not leave the differential CLK inputs open. Doing so causes the current source transistor of the input clock gate to become saturated, thus upsetting the internal bias regulators and jeopardizing the stability of the device. The asynchronous Master Reset resets the counter to an all zero state upon assertion. A_Start EN1 EN2 CLK CLK VBB MR DR Q CLK Q CLK LOGIC DIAGRAM Q0 Q0 Q1 Q1 Q7 Q7 CLK Q CLK Q D R CLK Q CLK Q D R CLK Q CLK Q D R 7/96 © Motorola, Inc. 1996 2–1 REV 2 1 page MC10E137 MC100E137 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454 MFAX: [email protected] – TOUCHTONE 602–244–6609 INTERNET: http://Design–NET.com JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 ECLinPS and ECLinPS Lite DL140 — Rev 4 ◊ MC10E137/DMC10E137/D 2–5 MOTOROLA 5 Page

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