7485 4-bit Magnitude Comparator
- Compares two 4-bit binary numbers (A and B)
- Provides outputs for A > B, A = B, and A < B
- Operates with standard TTL logic levels
- Cascadable for comparing larger bit-width numbers
- Commonly used in digital sorting, arithmetic, and decision circuits
25,00 EGP
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Description
Features
Compares 4-bit Binary or BCD Codes and Outputs Greater, Less Than or Equal
Outputs Directly Interface to CMOS, NMOS and TTL
Large Operating Voltage Range
Wide Operating Conditions
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | B3 Input |
| 2 | A |
| 3 | A=B Input |
| 4 | A>B Input |
| 5 | A>B Output |
| 6 | A=B Output |
| 7 | A |
| 8 | Ground |
| 9 | B0 Input |
| 10 | A0 Input |
| 11 | B1 Input |
| 12 | A1 Input |
| 13 | A2 Input |
| 14 | B2 Input |
| 15 | A3 Input |
| 16 | Vcc – Positive Supply |
Dimensional Drawing
Technical Data
Absolute Maximum Ratings
|
Supply Voltage |
7V |
|
Input Voltage |
5.5V |
|
Operating Free Air Temperature |
0°C to +70°C |
|
Storage Temperature Range |
-65°C to +150°C |
Recommended Operating Conditions
| Symbol | Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Vcc | Supply Voltage | 4.75 | 5 | 5.25 | V |
| Vih | HIGH Level Input Voltage | 2 | V | ||
| Vil | LOW Level Input Voltage | 0.8 | V | ||
| Ioh | HIGH Level Output Current | -0.4 | mA | ||
| Iol | LOW Level Output Current | 16 | mA | ||
| Ta | Free Air Operating Temperature | 0 | 70 | °C |
Electrical Characteristics
| Symbol | Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Vi | Input Clamp Voltage | Vcc=Min Ii=-12mA | -1.5 | V | ||
| Voh | HIGH Level Output Voltage | Vcc=Min Ioh=MAX Vil=MAX | 2.4 | 3.4 | V | |
| Vol | LOW Level Output Voltage | Vcc=Min Iol=MAX Vih=MAX | 0.2 | 0.4 | V | |
| Ii | Input Current@MAX Input Voltage | Vcc=Max Vi=5.5V | 1 | mA | ||
| Iih | HIGH Level Input Current | Vcc=Max Vi=2.4V | 40 | µA | ||
| Iil | LOW Level Input Current | Vcc=Max Vi=0.4V | -1.6 | mA | ||
| Ios | Short Circuit Output Current | Vcc=Max | -18 | -55 | mA | |
| Icch | Supply Current with Outputs HIGH | Vcc=Max | 4 | 8 | mA | |
| Iccl | Supply Current with Outputs LOW | Vcc=Max | 12 | 22 | mA |
Switching Characteristics at Vcc=5V,Ta=25°C
| Symbol | Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| tplh | Propagation Delay Time LOW-to-HIGH Level Output | Cl=15pF Rl=400R | 22 | nS | ||
| tphl | Propagation Delay Time HIGH-to-LOW Level Output | Cl=15pF Rl=400R | 15 | nS |
Specification
General
| Weight Weight | 0,00 g |
|---|---|
Dimensions
|
2,43 × 0,76 × 0,33 mm |
| Product Name |
7485 4-Bit Magnitude Comparator |
| Logic Family |
TTL |
| Function |
4-Bit Magnitude Comparison (A > B, A = B, A < B) |
| Number of Bits |
4 |
| Supply Voltage |
4.75V – 5.25V (Typical 5V) |
| Input Voltage (VIH/VIL) |
2V min / 0.8V max |
| Output Current (IOL/IOH) |
16mA / -0.4mA |
| Propagation Delay |
15ns (typical) |
| Operating Temperature Range |
0°C – +70°C |
| Package Type |
DIP-16 |
| Mounting Type |
Through-Hole |
| Output Type |
TTL Compatible |
| RoHS Compliant |
Yes |
