4028 BCD-to-Decimal Decoder IC 3V to 15V 6mA DIP-16
The 4028BDC is a BCD-to-decimal or binary-to-octal decoder consisting of 4 inputs, decoding logic gates, and 10 output buffers. When a BCD code is applied to the 4 inputs (A, B, C, and D), it results in a high level at the selected 1-of-10 decimal decoded outputs. Similarly, a 3-bit binary code applied to inputs A, B, and C is decoded in octal at outputs 0–7, whereas a high level signal at input D inhibits octal decoding and causes outputs 0–7 to go LOW. For enhanced reliability, all inputs are protected against static discharge damage by diode clamps connected to VDD and VSS.
Features
- Wide Supply Voltage Range: 3.0V to 15V
- High Noise Immunity: 0.45 VDD (typical)
- Low Power TTL Compatibility: Fan out of 2 driving 74L or 1 driving 74LS
- Low Power Consumption: Low quiescent power dissipation
- Glitch-Free Outputs: Ensures reliable and smooth decoding logic
- Positive Logic: Positive logic implementation on inputs and outputs
Specifications
1. Recommended Operating Conditions
| Parameter |
Min |
Max |
Unit |
| Supply Voltage (VDD) |
3.0 |
15 |
V |
| Input Voltage (VIN) |
0 |
VDD |
V |
| Operating Temperature Range (TA) |
-40 |
+85 |
°C |
2. Absolute Maximum Ratings
| Parameter |
Value |
Unit |
| Supply Voltage (VDD) |
-0.5 to +18 |
V |
| Input Voltage (VIN) |
-0.5 to VDD + 0.5 |
V |
| Storage Temperature Range (TS) |
-65 to +150 |
°C |
| Power Dissipation (PD) – Dual-In-Line |
700 |
mW |
| Power Dissipation (PD) – Small Outline |
500 |
mW |
| Lead Temperature (TL, Soldering 10 seconds) |
260 |
°C |
3. DC Electrical Characteristics (TA = 25°C)
| Parameter |
Conditions |
Min |
Typ |
Max |
Units |
| Quiescent Device Current (IDD) |
VDD = 5V, VIN = VDD or VSS |
— |
0.01 |
20 |
μA |
| VDD = 10V, VIN = VDD or VSS |
— |
0.01 |
40 |
μA |
| VDD = 15V, VIN = VDD or VSS |
— |
0.02 |
80 |
μA |
| LOW Level Output Current (IOL) |
VDD = 5V, VO = 0.4V |
0.44 |
0.88 |
— |
mA |
| VDD = 10V, VO = 0.5V |
1.1 |
2.2 |
— |
mA |
| VDD = 15V, VO = 1.5V |
3.0 |
6.0 |
— |
mA |
| HIGH Level Output Current (IOH) |
VDD = 5V, VO = 4.6V |
-0.16 |
-0.32 |
— |
mA |
| VDD = 10V, VO = 9.5V |
-0.4 |
-0.8 |
— |
mA |
| VDD = 15V, VO = 13.5V |
-1.2 |
-3.5 |
— |
mA |
| Input Current (IIN) |
VDD = 15V, VIN = 0V |
-0.3 |
— |
— |
μA |
| VDD = 15V, VIN = 15V |
— |
— |
0.3 |
μA |
4. AC Electrical Characteristics (TA = 25°C, CL = 50 pF, RL = 200 kΩ)
| Parameter |
Conditions |
Typ |
Max |
Units |
| Propagation Delay Time (tPHL or tPLH) |
VCC = 5V |
240 |
480 |
ns |
| VCC = 10V |
100 |
200 |
ns |
| VCC = 15V |
70 |
140 |
ns |
| Transition Time (tTHL or tTLH) |
VCC = 5V |
175 |
350 |
ns |
| VCC = 10V |
75 |
150 |
ns |
| VCC = 15V |
60 |
110 |
ns |
| Input Capacitance (CIN) |
Any Input |
5 |
7.5 |
pF |
Applications
- Code conversion
- Address decoding
- Indicator-tube decoder
Package Content
- 1 x 4028 BCD-to-Decimal Decoder IC 3V to 15V 6mA DIP-16
DataSheet
