Product Summary

The CD4518 is a dual BCD up-counter consisting 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 transistion. For single-unit operation the enable input is maintained high and the counter advances on each positive-going transition of the clock. The CD4518 is cleared by high levels on its reset lines. The CD4518 can be cascaded in the ripple mode by connecting Q4 to the enable input of the subsquent counter while the clock input of the latter is held low.

Parametrics

CD4518 absolute maximum ratings: (1)DC supply-voltage range, VDD, voltages referenced to VSS terminal: -0.5 to 20V; (2)input voltage range, all inputs: -0.5V to VDD+0.5V; (3)DC input current, any one input: ±10mA; (4)power dissipation per package, PD: 550mW for TA=-55 to 100℃; derate linearity at 12mW/℃ to 220mW for TA=100 to 125℃; (5)operating temperature range, TA: -55 to 125℃; (6)storatge temperature range, Tstg: -65 to 150℃; (7)lead temperature: 265℃.

Features

CD4518 features: (1)medium-speed operation, 6MHz typical clock frequency at 10V; (2)positive or negative-edge triggering; (3)synchronous internal carry propagation; (4)100% tested for quiescent current at 20V; (5)maximum input curfrent of 1μA at 18V over full package temperature range: 100mA at 18V and 25℃; (6)noise margin: 1V at VDD=5V; (7)5V, 10V and 15V parametric ratings; (8)standardized, symmetrical output characteristics; (9)meets all require3ments of JEDEC tentative standard No 13B, standard specifications for description of B series CMOS devices.

Diagrams

CD4518 functional diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
CD4518BE
CD4518BE

Texas Instruments

Counter ICs Dual BCD Up

Data Sheet

0-1: $0.28
1-25: $0.25
25-100: $0.19
100-250: $0.14
CD4518BEE4
CD4518BEE4

Texas Instruments

Counter ICs Dual BCD Up

Data Sheet

0-1: $0.32
1-25: $0.25
25-100: $0.21
100-250: $0.14
CD4518BM
CD4518BM

Texas Instruments

Counter ICs CMOS Dual BCD Up- Counter

Data Sheet

0-1: $0.33
1-25: $0.25
25-100: $0.22
100-250: $0.15
CD4518BM96
CD4518BM96

Texas Instruments

Counter ICs CMOS Dual BCD Up- Counter

Data Sheet

0-1: $0.25
1-25: $0.20
25-100: $0.17
100-250: $0.12
CD4518BM96E4
CD4518BM96E4

Texas Instruments

Counter ICs CMOS Dual BCD Up- Counter

Data Sheet

0-1: $0.25
1-25: $0.20
25-100: $0.17
100-250: $0.12
CD4518BM96G4
CD4518BM96G4

Texas Instruments

Counter ICs CMOS Dual BCD Up- Counter

Data Sheet

0-1: $0.25
1-25: $0.20
25-100: $0.17
100-250: $0.12
CD4518BME4
CD4518BME4

Texas Instruments

Counter ICs CMOS Dual BCD Up- Counter

Data Sheet

0-1: $0.29
1-25: $0.23
25-100: $0.20
100-250: $0.15
CD4518BMG4
CD4518BMG4

Texas Instruments

Counter ICs CMOS Dual BCD Up- Counter

Data Sheet

0-1: $0.29
1-25: $0.23
25-100: $0.20
100-250: $0.15