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| HCF4026B DECADE COUNTER/DIVIDER WITH DECODED 7-SEGMENT DISPLAY OUTPUT AND DISPLAY ENABLE s s s s s s s s s s COUNTER AND 7-SEGMENT DECODING IN ONE PACKAGE EASILY INTERFACED WITH 7-SEGMENT DISPLAY TYPES FULLY STATIC COUNTER OPERATION : DC TO 6MHz (Typ.) AT VDD = 10V IDEAL FOR LOW POWER DISPLAYS DISPLAY ENABLE OUTPUT QUIESCENT CURRENT SPECIF. UP TO 20V STANDARDIZED SYMMETRICAL OUTPUT CHARACTERISTICS INPUT LEAKAGE CURRENT II = 100nA (MAX) AT VDD = 18V TA = 25C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC JESD13B " STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES" DIP SOP ORDER CODES PACKAGE DIP SOP TUBE HCF4026BEY HCF4026BM1 T&R HCF4026M013TR DESCRIPTION The HCF4026B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. The HCF4026B consists of a 5-stages Johnson decade counter and an output decoder which converts the Johnson code to a 7 segment decoded output for driving one stage in a numerical display. This device is particularly advantageous in display applications where low power dissipation and/or low package count are PIN CONNECTION important. This device has CLOCK, RESET, CLOCK INHIBIT, DISPLAY ENABLE input and CARRY OUT, DISPLAY ENABLE, UNGATED "C" SEGMENT and 7 DECODED outputs (a to g). A high RESET signal clears the decade counter to its zero count. The counter is advanced one count at the positive clock signal transition if the CLOCK INHIBIT signal is low. Counter advancement via the clock line is inhibited when the CLOCK INHIBIT signal is high. Antilock gating is provided on the JOHNSON counter, thus assuring proper counting sequence. The CARRY-OUT (COUT) signal completes one cycle every ten CLOCK INPUT cycles and is used to clock the succeeding decade directly in a multi-decade counting chain. September 2001 1/11 HCF4026B The seven decoded outputs (a, b, c, d, e, f, g) illuminate the proper segments in a seven segment display device used for representing the decimal numbers 0 to 9. The 7-segment outputs go high when the DISPLAY ENABLE IN is high. When the DISPLAY ENABLE IN is low the seven decoded outputs are forced low regardless of the state of the counter. Activation of the display only IINPUT EQUIVALENT CIRCUIT when required results in significant power savings. This system also facilitates implementation of display character multiplexing. The CARRY OUT and UNGATED "C" SEGMENT signals are not gated by the DISPLAY ENABLE and therefore are available continuously. This feature is a requirement in implementation of certain divider function such a as divide by 60 and divide by 12. PIN DESCRIPTION PIN No 1 10, 12, 13, 9, 11, 6, 7 2 15 3 5 4 SYMBOL CLOCK a to g CLOCK INHIBIT RESET DISPLAY ENABLE IN CARRY OUT DISPLAY ENABLE OUT UNGATED "C" SEGMENT OUT VSS VDD NAME AND FUNCTION Clock Input 7 - Segments Decoded Outputs Clock Inhibit Input Reset Input Display Enable Input Carry Out Output Display Enable Output Ungated "C" Segment Output Negative Supply Voltage Positive Supply Voltage 14 8 16 FUNCTIONAL DIAGRAM 2/11 HCF4026B LOGIC DIAGRAM TIMING CHART 3/11 HCF4026B ABSOLUTE MAXIMUM RATINGS Symbol VDD VI II PD Top Tstg Supply Voltage DC Input Voltage DC Input Current Power Dissipation per Package Power Dissipation per Output Transistor Operating Temperature Storage Temperature Parameter Value -0.5 to +22 -0.5 to VDD + 0.5 10 200 100 -55 to +125 -65 to +150 Unit V V mA mW mW C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. All voltage values are referred to VSS pin voltage. RECOMMENDED OPERATING CONDITIONS Symbol VDD VI Top Supply Voltage Input Voltage Operating Temperature Parameter Value 3 to 20 0 to VDD -55 to 125 Unit V V C 4/11 HCF4026B DC SPECIFICATIONS Test Conditions Symbol Parameter VI (V) 0/5 0/10 0/15 0/20 0/5 0/10 0/15 5/0 10/0 15/0 0.5/4.5 1/9 1.5/18.5 0.5/4.5 9/1 1.5/18.5 2.5 4.6 9.5 13.5 0.4 0.5 1.5 VO (V) IO VDD (A) (V) 5 10 15 20 5 10 15 5 10 15 5 10 15 5 10 15 5 5 10 15 5 10 15 18 TA = 25C Min. Typ. 0.04 0.04 0.04 0.08 4.95 9.95 14.95 0.05 0.05 0.05 3.5 7 11 1.5 3 4 -1.36 -0.44 -1.1 -3.0 0.44 1.1 3.0 -3.2 -1 -2.6 -6.8 1 2.6 6.8 10-5 5 0.1 7.5 -1.1 -0.36 -0.9 -2.4 0.36 0.9 2.4 1 3.5 7 11 1.5 3 4 -1.1 -0.36 -0.9 -2.4 0.36 0.9 2.4 1 Max. 5 10 20 100 4.95 9.95 14.95 0.05 0.05 0.05 3.5 7 11 1.5 3 4 Value -40 to 85C Min. Max. 150 300 600 3000 4.95 9.95 14.95 0.05 0.05 0.05 -55 to 125C Min. Max. 150 300 600 3000 Unit IL Quiescent Current A VOH High Level Output Voltage Low Level Output Voltage High Level Input Voltage Low Level Input Voltage Output Drive Current VOL VIH VIL <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 V V V V IOH IOL Output Sink Current Input Leakage Current Input Capacitance 0/5 0/5 0/10 0/15 0/5 0/10 0/15 0/18 mA mA A pF II CI any input any input The Noise Margin for both "1" and "0" level is: 1V min. with VDD =5V, 2V min. with VDD=10V, 2.5V min. with VDD=15V 5/11 HCF4026B DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25C, CL = 50pF, RL = 200K, tr = tf = 20 ns) Test Condition Symbol Parameter VDD (V) 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 Min. Value (*) Typ. 250 100 75 350 125 90 100 50 25 5 11 16 110 50 40 Unlimited Max. 500 200 150 700 250 180 200 100 50 Unit CLOCKED OPERATION tPLH tPHL Propagation Delay Time (Carry Out Line) tPLH tPHL Propagation Delay Time (Decoded Out Lines) tTHL tTLH Transition Time (Carry Out Line) fCL (1) Maximum Clock Input Frequency Clock Pulse Width ns ns ns 2.5 5.5 8 MHz 260 100 80 tWC ns tr , tf Clock Input Rise or Fall Time s RESET OPERATION tPLH tPHL Propagation Delay Time (Carry Out Line) tPLH tPHL Propagation Delay Time (Decoded Out Lines) tWR Reset Pulse Widht trem Reset Removal Time 275 120 80 300 125 90 100 50 25 0 0 0 550 240 160 600 250 180 120 100 50 30 15 10 ns ns ns ns (*) Typical temperature coefficient for all VDD value is 0.3 %/C. (1) Measured with respect to carry output line. 6/11 HCF4026B TYPICAL APPLICATIONS Interfacing with Filament Fluorescent Display Detail of Typical Flip-flop Stage Interfacing with LED Displays (display common anode) Interfacing with LED Displays (display common cathode) Interfacing with NIXIE Tube 7/11 HCF4026B TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RL = 200K RT = ZOUT of pulse generator (typically 50) 8/11 HCF4026B Plastic DIP-16 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 TYP. MAX. inch P001C 9/11 HCF4026B SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 PO13H 10/11 HCF4026B Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom (c) http://www.st.com 11/11 |
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