SN74AS641NIn StockTexas Instruments
SN74AS641N is an 8-bit non-inverting bus transceiver with open-collector outputs and common direction control, supporting bidirectional data transfer at 4.5V–5.5V. It features 64mA output drive capability in a 20-PDIP package. From $2.89, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74AS641N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8875(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit non-inverting bidirectional bus transceiver with common direction control
- Open-collector outputs with 64mA sink current for robust bus driving
- Wide supply voltage range of 4.5V to 5.5V for reliable AS-family logic operation
- 20-PDIP through-hole package for easy prototyping and high-density board assembly
- 50pF load capacitance rating ensures signal integrity in high-capacitance bus environments
Applications
The SN74AS641N is widely used in industrial control systems and embedded computing applications where bidirectional 8-bit data bus interfacing is required between processors, memory, and peripheral devices. Its open-collector outputs make it ideal for wired-OR bus configurations in backplane designs and multi-master communication architectures. It is also commonly deployed in test equipment, legacy system upgrades, and any application demanding reliable TTL-compatible bus buffering with direction control.
Specifications
| YTEOL | 15 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | AS |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 211mA |
| Prop. Delay@Nom-Sup | 30ns |
| Propagation Delay (tpd) | 7.5ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output drive current of the SN74AS641N?
The SN74AS641N features open-collector outputs capable of sinking up to 64mA (I(ol) = 0.064A), making it suitable for driving high-capacitance bus lines and wired-OR configurations in industrial and embedded systems.
What supply voltage does the SN74AS641N require?
The SN74AS641N operates from a supply voltage range of 4.5V to 5.5V, which is standard for the AS (Advanced Schottky) TTL logic family, and supports ambient temperatures from 0°C to 70°C.
In what applications is the SN74AS641N commonly used?
The SN74AS641N is commonly used in bidirectional 8-bit data bus interfacing between CPUs, memory, and peripherals, backplane bus systems, industrial controllers, and test equipment requiring robust TTL-compatible bus transceivers with direction control.
What package does the SN74AS641N come in?
The SN74AS641N is available in a 20-pin PDIP (Plastic Dual In-Line Package), which is suitable for through-hole mounting on PCBs and is convenient for prototyping and legacy system designs.
What are common alternatives to the SN74AS641N?
Common alternatives include the SN74LS641N (Low-Power Schottky version), SN74ALS641N (Advanced Low-Power Schottky), and SN74ABT641N (Advanced BiCMOS), all offering similar 8-bit non-inverting bus transceiver functionality with varying speed and power characteristics.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $8.2500 | $8.25 |
| 500+ | $7.3000 | $3650.00 |
| 607+ | $3.0250 | $1836.17 |
| 993+ | $2.8875 | $2867.29 |
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