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Part Number: IW4518B
Description: The IW4518B Dual BCD Up-Counter consists two identical, internally synchronous 4-stage counters. The c...
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IW4518B
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DataSheet
General Description
IW4518B General Description
The IW4518B Dual BCD Up-Counter consists 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.
IW4518B Maximum Ratings
| Symbol | Parameter | Value | Unit |
| VCC | DC Supply Voltage (Referenced to GND) | -0.5 to +20 | V |
| VIN | DC Input Voltage (Referenced to GND) | -0.5 to VCC +0.5 | V |
| VOUT | DC Output Voltage (Referenced to GND) | -0.5 to VCC +0.5 | V |
| IIN | DC Input Current, per Pin | ±10 | mA |
| PD | Power Dissipation in Still Air, Plastic DIP, SOIC Package |
750 500 |
mW |
| PD | Power Dissipation per Output Transistor | 100 | mW |
| Tstg | Storage Temperature | -65 to +150 | °C |
| TL | Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) |
260 | °C |
*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
IW4518B Features
• Operating Voltage Range: 3.0 to 18 V
• Maximum input current of 1 µA at 18 V over full packagetemperature range; 100 nA at 18 V and 25°C
• Noise margin (over full package temperature range):
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
• Maximum input current of 1 µA at 18 V over full packagetemperature range; 100 nA at 18 V and 25°C
• Noise margin (over full package temperature range):
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
IW4518B Connection Diagram
IW4518B
PDF/DataSheet Download
- Datasheet: IW4518B
- File Size: 234725 KB
- Manufacturer: ETC [ETC]
- Click here to Download
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