MC14490 ON Semiconductor, MC14490 Datasheet
MC14490
Available stocks
Related parts for MC14490
MC14490 Summary of contents
Page 1
... The bounce eliminator circuit will remove bounce on both the “make” and the “break” contact closure. The clock for operation of the MC14490 is derived from an internal R–C oscillator which requires only an external capacitor to adjust for the desired operating frequency (bounce delay) ...
Page 2
... CLOCK GENERATOR OSC 9 2 out B 14 IDENTICAL TO ABOVE STAGE IDENTICAL TO ABOVE STAGE IDENTICAL TO ABOVE STAGE IDENTICAL TO ABOVE STAGE IDENTICAL TO ABOVE STAGE in MC14490 PIN ASSIGNMENT out out out ...
Page 3
... Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. Î Î Î Î MC14490 (Voltages Referenced Î Î Î ...
Page 4
... F, the power supply must turn off no faster than t = (15 V) ext because power supplies are heavily filtered and cannot discharge at this rate. When a more rapid decrease of the power supply to zero volts occurs, the MC14490 may sustain damage. To avoid this possibility, use external clamping diodes, D1 and D2, connected as shown in Figure 2. 50% ...
Page 5
... Figure 4). The clock signal at the oscillator output pin may then be used to clock other MC14490 Bounce Eliminator packages. With the use of the MC14490, a large number of signals can be cleaned up, with the requirement of only one small capacitor external to the Hex Bounce Eliminator packages. ...
Page 6
... In addition, other MC14490 oscillator inputs can be driven from a single oscillator output buffered by an MC14050 (see Figure 5 six MC14490s may be driven by a single and the buffer. DD The MC14490 is TTL compatible on both the inputs and the outputs ...
Page 7
... In applications where different leading and trailing edge delays are required (such as a fast attack/slow release timer.) Clocks of different frequencies can be gated into the MC14490 as shown in Figure 6. In order to produce a slow attack/fast release circuit leads A and B should be interchanged. The clock out lead can then be used to feed clock signals to the other MC14490 packages where the asymmetrical input/output timing is required ...
Page 8
... ACTIVE LOW B ACTIVE LOW Figure 9. Single Pulse Output Circuit OSC OR in OSC out INPUT Figure 10. Multiple Output Signal Timing Diagram MC14490 OUT OUT http://onsemi.com 8 ...
Page 9
... SEATING –T– PLANE 0.25 (0.010 MC14490 PDIP–16 P SUFFIX NOTES: CASE 648–08 1. DIMENSIONING AND TOLERANCING PER ANSI ISSUE R Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. ...
Page 10
... PLASTIC EIAJ SOIC PACKAGE VIEW 0.10 (0.004) 0.13 (0.005) M MC14490 PACKAGE DIMENSIONS SOEIAJ–16 F SUFFIX CASE 966–01 ISSUE O NOTES DETAIL P c http://onsemi.com 10 DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. ...
Page 11
... SEATING e PLANE 14X T MC14490 SOIC–16 DW SUFFIX CASE 751G–03 ISSUE B q NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS D AND E DO NOT INLCUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION ...
Page 12
... Email: ONlit–asia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031 Phone: 81–3–5740–2745 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 12 MC14490/D ...