HEF4516BT NXP

HEF4516B Binary up/down counter Rev. 7 11 November 2011 Product data sheet 1. General description The HEF4516B is an edge-triggered synchronous 4-bit binary up/down counter with a clock input (CP), an up/down count control input (UP/DN), an active LOW count enable input (CE), an asynchronous active HIGH parallel load input (PL), four parallel inputs (D0 to D3), four parallel outputs (Q0 to Q3), an active LOW terminal count output (TC), and an overriding asynchronous master reset input (MR). Information on D0 to D3 is loaded into the counter while PL is HIGH, independent of all other input conditions except for MR which must be LOW. When PL and CE are LOW, the counter changes on the LOW-to-HIGH transition of CP. Input UP/DN determines the direction of the count, counting up when HIGH and counting down when LOW. When counting up, TC is LOW when Q0 and Q3 are HIGH and CE is LOW. When counting down, TC is LOW when Q0 to Q3 and CE are LOW. A HIGH on MR resets the counter (Q0 to Q3 = LOW) independent of all other input conditions. It operates over a recommended V power supply range of 3 V to 15 V referenced to V DD SS (usually ground). Unused inputs must be connected to V , V , or another input. DD SS 2. Features and benefits Fully static operation 5 V, 10 V, and 15 V parametric ratings Standardized symmetrical output characteristics Specified from 40 C to +85 C Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from 40 C to +85 C. Type number Package Name Description Version HEF4516BP DIP16 plastic dual in-line package 16-leads (300 mil) SOT38-4 HEF4516BT SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1HEF4516B NXP Semiconductors Binary up/down counter 4. Functional diagram 412 133 D0 D1 D2 D3 PL 1 PARALLEL LOAD CIRCUITRY CP S /C D D 15 CE 5 TC UP/DOWN 7 UP/DN COUNTER 10 MR 9 C D Q0 Q1 Q2 Q3 611 142 001aae667 Fig 1. Functional diagram HEF4516B All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 7 11 November 2011 2 of 17