74LS253 IC Dual 4-input multiplexer 3-state
74LS253 Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates.
Separate output control inputs are provided for each of the two four-line sections. The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enabled output will drive the bus line to a HIGH or LOW logic level.
Features:
- 3-STATE version of DM74LS153 with same pinout
- Schottky-diode-clamped transistors
- Permit multiplexing from N-lines to one line
- Performs parallel-to-serial conversion
- Strobe/output control
- High fanout totem-pole outputs
- Typical propagation delay
- Data to output 12 ns
- Select to output 21 ns
- Typical power dissipation 35 mW
Specifications:
| Symbol | Parameter | Min | Nom | 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 | −2.6 | mA | ||
| IOL | LOW Level Output Current | 24 | mA | ||
| TA | Free Air Operating Temperature | 0 | 70 | °C |
| Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted) |
||||||
| Symbol | Parameter | Conditions | Min | Typ | Max | Units |
| VI | Input Clamp Voltage | VCC = Min, II = −18 mA | −1.5 | V | ||
| VOH | HIGH Level
Output Voltage |
VCC = Min, IOH = Max
VIL = Max, VIH = Min |
2.4 | 3.1 | V | |
| VOL | LOW Level
Output Voltage |
VCC = Min, IOL = Max
VIL = Max, VIH = Min |
0.5 | V | ||
| IOL = 12 mA, VCC = Min | 0.4 | |||||
| II | Input Current @ Max Input Voltage | VCC = Max, VI = 7V | 0.1 | mA | ||
| IIH | HIGH Level Input Current | VCC = Max, VI = 2.7V | 20 | µA | ||
| IIL | LOW Level Input Current | VCC = Max, VI = 0.4V | −0.4 | mA | ||
| IOZH | Off-State Output Current with
HIGH Level Output Voltage Applied |
VCC = Max, VO = 2.7V
VIH = Min, VIL = Max |
20 | µA | ||
| IOZL | Off-State Output Current with
LOW Level Output Voltage Applied |
VCC = Max, VO = 0.4
VIH = Min, VIL = Max |
−20 | µA | ||
| IOS | Short Circuit Output Current | VCC = Max (Note 3) | −20 | −100 | mA | |
| ICC1 | Supply Current | VCC = Max (Note 4) | 7 | 12 | mA | |
| ICC2 | Supply Current | VCC = Max (Note 5) | 8.5 | 14 | mA | |
Dimensions:
Pinout:
Applications:
- Digital signal selection
- Data routing and switching
- Shared data bus systems
- Microprocessor and microcontroller interfaces
- Digital logic simplification
- Communication and control circuits
- Multiplexed input systems
- Educational electronics projects
Packages Included:
- 1 × 74LS253 IC Dual 4-input multiplexer 3-state.
