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HEF4518B Datasheet (PDF) - Nexperia B.V. All rights reserved

HEF4518B Datasheet PDF - Nexperia B.V. All rights reserved
Part # HEF4518B
Download  HEF4518B Download

File Size   221.42 Kbytes
Page   13 Pages
Manufacturer  NEXPERIA [Nexperia B.V. All rights reserved]
Direct Link  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved
Description Dual BCD counter

HEF4518B Datasheet (PDF)

Go To PDF Page Download Datasheet
HEF4518B Datasheet PDF - Nexperia B.V. All rights reserved

Part # HEF4518B
Download  HEF4518B Click to download

File Size   221.42 Kbytes
Page   13 Pages
Manufacturer  NEXPERIA [Nexperia B.V. All rights reserved]
Direct Link  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved
Description Dual BCD counter

HEF4518B Datasheet (HTML) - Nexperia B.V. All rights reserved

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HEF4518B Product details

1. General description
The HEF4518B is a dual 4-bit internally synchronous BCD counter. The counter has two clock
inputs (CP0 and CP1 ), buffered outputs from all four bit positions (O0 to O3) and an asynchronous
master reset input (MR). The counter advances on either the LOW to HIGH transition of the CP0
input if CP1 is HIGH or the HIGH to LOW transition of the CP1 input if CP0 is LOW. Either CP0
or CP1 may be used as the clock input to the counter and the other clock input may be used as
a clock enable input. A HIGH on MR resets the counter (O0 to O3 = LOW) independent of CP0
and CP1. Schmitt-trigger action in the clock inputs makes the circuit highly tolerant to slower clock
rise and fall times. Inputs include clamp diodes. This enables the use of current limiting resistors to
interface inputs to voltages in excess of VDD.
2. Features and benefits
• Wide supply voltage range from 3.0 V to 15.0 V
• CMOS low power dissipation
• High noise immunity
• Tolerant of slow clock rise and fall times
• Fully static operation
• 5 V, 10 V, and 15 V parametric ratings
• Standardized symmetrical output characteristics
• Complies with JEDEC standard JESD 13-B
• ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V
• Specified from -40 °C to +85 °C
3. Applications
• Multistage synchronous counting
• Multistage asynchronous counting
• Frequency dividers




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