74LS248 BCD to Seven Segment Decoder Driver IC
- BCD to Seven Segment Decoder/Driver
- Logic Family:Â 74LS
- Propagation Delay Time:Â 100 ns at 5 V
- Number of Lines In/Out:Â 4 / 7
- Operating Temperature Range:Â 00C to +700C
- Supply Voltage Range:Â 4.75V to 5.25V
- Internal Pull-Ups Eliminate Need for External Resistors
- Lamp-Test Provision
- Â Leading/Trailing Zero Suppression
- Package:Â DIP-16
74LS25 Dual 4-Input NOR Gate IC
- Dual 4-Input NOR Gates With Strobe
- High-level input voltage:Â 2V
- Low-level input voltage:Â 0.8V
- High-level output current:Â -0.8mA
- Low-level output current:Â 16mA
- No. of gates:Â 2
- No. of inputs:Â 4
- No. of outputs:Â 1
- Propagation delay time:Â 22ns
- Package:Â DIP-14
- Output type: Push-Pull
- Max Speed: (tpd 10-50ns)
- Max Data rate: 70Mbps
- Rating: Catalog
- Operating temperature range: 0°C to 70°C
74LS251 Data Selector or Multiplexer IC With 3-State Output
74LS253 Dual 4-Line to 1-Line Data Selector Multiplexer IC
- Â Permits multiplexing from N lines to 1 line
- Performs at parallel-to-serial conversion
- Strobe (enable) line provided for cascading (N lines to n lines)
- High fan-out, low impedance, totem pole outputs
- Typical average propagation delay times From data 14 ns From strobe 19 ns From select 22 ns
- Typical power dissipation 31 mW
74LS257 Quadruple 2-Line to 1-Line Data Selector or Multiplexer IC
- Quadruple 2-Line to 1-Line Data Selector/Multiplexer
- Logic Family:Â LS
- No. of Bits:Â 4
- Propagation Delay Time:Â 15 ns at 5 V
- No. of Lines In/Out:Â 2 / 1
- Output Current Max:Â 24mA
- Power Dissipation:Â 200 mW
- No. of Channels:Â 1
- No. of Pins:Â 16
- Operating Temperature Range: 0°C to +70°C
- Supply Voltage Range:Â 4.75V to 5.25V
- Package:Â DIP-16
74LS258 Quadruple 2-Line to 1-Line Data Selector or Multiplexer IC
74LS260 Dual 5-Input NOR Gate IC
- Dual 5-Input NOR Gate
- Logic Family: LS
- Technology Family: TTL
- Min VCC: 4.75V
- VCC (Max): 5.25V
- Number of Gates: 2
- High Level Output Current: - 0.4 mA
- Low Level Output Current: 8 mA
- Number of Lines In/Out: 5 / 1
- Propagation Delay Time: 12 ns at 5 V
- Supply Voltage Range: 4.75V to 5.25V
- Package: DIP14
- Output type: Push-Pull
- Max Speed: (TPD 10-50ns)
- Max Data rate: 70Mbps
- Low Power Requirements
- Standard TTL Switching Voltages
- Operating temperature range: 0°C to 70°C
74LS27 Triple 3-Input NOR Gate IC
- Triple 3-Input NOR Gate
- Max Supply Voltage 7V
- Max Input Voltage 7V
- TTL outputs
- Maximum ESD: 3.5KV
- Typical Rise Time: 15ns
- Typical Fall Time: 15ns
- High-level input voltage: 2V
- Low-level input voltage: 0.8V
- High-level output current: -0.4mA
- Low-level output current: 8mA
- of gates: 3
- of inputs: 9
- of outputs: 3
- Propagation delay time: 18ns
- Package: DIP-14
- Operating voltage range: +4.75V to +5.25V
- Low power consumption
- Operating Free Air Temperature Range 0°C to +70°C
- Storage Temperature Range -65°C to +150°C
74LS290 4-Bit Binary Counter IC
- Decade Counter; 4-bit Binary Counter
- High-level input voltage:Â 2V
- Low-level input voltage:Â 0.8V
- High-level output current:Â -0.4mA
- Low-level output current:Â 8mA
- Input clamp voltage:Â -1.5V
- Maximum clock frequency:Â 32MHz
- Propagation delay time max:Â 18ns
- Power Consumption:Â 45mW
- Supply voltage range:Â 4.75 to 5.25V
- Package:Â DIP-14
74LS293 4-Bit Binary Counter IC
74LS295 4-Bit Right-Shift Left-Shift Register IC
- 4-Bit Right-Shift Left-Shift Register with 3-State Outputs
- High-level input voltage:Â 2V
- Low-level input voltage:Â 0.8V
- High-level output voltage:Â 3.1V
- Low-level output voltage:Â 0.25V
- Input clamp voltage:Â -1.5V
- Maximum clock frequency:Â 45MHz
- Propagation delay time max:Â 30ns
- Supply voltage range:Â 4.75 to 5.25V
- Package:Â DIP-14
74LS299 8-Bit Universal Shift Storage Register IC
- 8-Bit Universal Shift/Storage Register
- High-level input voltage:Â 2V
- Low-level input voltage:Â 0.8V
- High-level output voltage:Â 3.4V
- Low-level output voltage:Â 0.5V
- Maximum clock frequency:Â 70MHz
- Propagation delay time max:Â 24ns
- Power Dissipation:Â 700mW
- Supply voltage range:Â 4.75 to 5.25V
- Multiplexed Input/Outputs for Data Hold, Shift Right, Shift Left, and Load Data
- Operates with Outputs Enabled or at High impedance
- Common I/O for Reduced Pin Count
- Four Operation Modes: Shift Left, Shift Right, Load and Store
- Separate Shift Right Serial Input and Shift Left Serial Input for Easy Cascading
- 3-State Outputs Drive Bus Lines Directly
- Can be Cascaded for N-Bit Word Lengths
- Standard TTL Switching Voltages
- Package:Â DIP-20