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Product Detailed Parameters
- Description：IC TXRX NON-INVERT 5.5V 20DIP
- Series：74ALS
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：Transceiver, Non-Inverting
- Number of Elements：1
- Number of Bits per Element：8
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：15mA, 24mA
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：20-DIP (0.300", 7.62mm)
- Supplier Device Package：20-PDIP
- Grade：-
- Qualification：-
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Overview
The SN74ALS245A-1NG4 is an octal bus transceiver manufactured by Texas Instruments, belonging to the 74ALS logic family. It features eight non-inverting channels with three-state outputs housed in a 20-pin DIP package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a low-level output current of 24 mA and a high-level output current of 15 mA. It functions reliably across an operating temperature range of 0°C to +70°C.
Feature Summary
- Provides bidirectional data transmission via eight independent non-inverting channels
- Features three-state outputs to facilitate direct connection to system buses
- Designed for high-speed operation using Advanced Low-Power Schottky technology
Applications
- Memory module data bus interfacing
- Microprocessor-based system data routing
- Control signal distribution in industrial automation
Procurement Notes
Verify the specific suffix 'G4' indicates lead-free manufacturing compliance when sourcing. Confirm the 'NG4' designation corresponds to the 20-pin DIP package variant. Ensure the component meets required RoHS standards for the target assembly process. Cross-reference the manufacturer datasheet for pinout consistency before integration.
Selection Notes
Select this component for applications requiring robust drive capability and compatibility with standard TTL or CMOS logic levels. The ALS series offers a balance between power consumption and switching speed suitable for general-purpose digital systems. Evaluate thermal requirements as the device dissipates power during active switching cycles within the specified voltage range.
Part Context
This part belongs to the widely adopted 74-series logic family, specifically the Advanced Low-Power Schottky (ALS) subset. The SN74ALS245A variant serves as a standard solution for managing parallel data flow in embedded controllers. Its DIP packaging facilitates prototyping and through-hole mounting in legacy or specialized hardware designs.
Replacement Considerations
Compatible substitutes include SN74ALS245ANSR and SN74ALS245AN. Verify that alternative packages maintain identical pin configurations and electrical characteristics for seamless circuit board replacement.
