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CD4518BM

Counter Dual 4-Bit Decade UP 16-Pin SOIC Tube

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CD4518BM General Description

CD4518 Dual BCD Up-Counter and CD4520 Dual Binary Up-Counter each consist of two identical, internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable CLOCK and ENABLE lines for incrementing on either the positive-going or negative-going transition. For single-unit operation the ENABLE input is maintained high and the counter advances on each positive-going transition of the CLOCK. The counters are cleared by high levels on their RESET lines.

The counter can be cascaded in the ripple mode by connecting Q4 to the enable input of the subsequent counter while the CLOCK input of the latter is held low.

The CD4518B and CD4520B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (M, M96, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

Texas Instruments, Inc Inventory

Key Features

  • Medium-speed operation -
    6-MHz typical clock frequency at 10 V
  • Positive- or negative-edge triggering
  • Synchronous internal carry propagation
  • 100% tested for quiescent current at 20 V
  • Maximum input current of 1 μA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C
  • Noise margin (over full package-temperature range):
    • 1 V at VDD = 5 V
    • 2 V at VDD = 10 V
    • 2.5 V at VDD = 15 V
  • 5-V, 10-V, and 15-V parametric ratings
  • Standardized, symmetrical output characteristics
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
  • Applications
    • Multistage synchronous counting
    • Multistage ripple counting
    • Frequency dividers

Data sheet acquired from Harris Semiconductor.

Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory

Specifications

Category Integrated Circuits (ICs)LogicCounters, Dividers Mfr Texas Instruments
Series 4000B Package Tube
Product Status Active Logic Type BCD Counter
Direction Up Number of Elements 2
Number of Bits per Element 4 Reset Asynchronous
Timing Synchronous Count Rate 8 MHz
Trigger Type Positive, Negative Voltage - Supply 3 V ~ 18 V
Operating Temperature -55°C ~ 125°C Mounting Type Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width) Supplier Device Package 16-SOIC
Base Product Number CD4518

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