SN74ALS564BDWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74ALS564BDWG4 is an octal D-type flip-flop bus driver from Texas Instruments, featuring 3-state outputs and active-low output enable for bidirectional bus applications. It belongs to the ALS logic family, rated for 50pF load capacitance in a 20-pin SOIC package with RoHS-compliant construction. Available in stock from global distributors with fast worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS564BDWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ALS564BDWG4?
- 3-state outputs with active-low enable allow multiple devices to share a common data bus without contention
- ALS (Advanced Low-power Schottky) family delivers improved speed and lower power versus standard LS logic
- Octal (8-bit) width registers an entire byte per clock cycle, simplifying bus interface design
- 50pF rated load capacitance supports driving long PCB traces and backplane bus lines reliably
What is SN74ALS564BDWG4 used for?
The SN74ALS564BDWG4 is commonly used as a data bus buffer and latch in microprocessor systems, memory interface boards, and industrial control backplanes where 8-bit parallel data must be captured and driven onto shared buses. Its 3-state output capability allows clean bus arbitration in multi-master architectures such as VMEbus, ISA, or custom parallel processor buses.
What are the specifications of SN74ALS564BDWG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | BROADSIDE VERSION OF 534 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ALS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max Frequency@Nom-Sup | 30000000Hz |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 24mA |
| Prop. Delay@Nom-Sup | 14ns |
| Propagation Delay (tpd) | 14ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74ALS564BDWG4 datasheet?
SN74ALS564BDWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS564BDWG4?
Compatible alternatives and drop-in replacements for SN74ALS564BDWG4:
Frequently Asked Questions
What is the function of the SN74ALS564BDWG4?
The SN74ALS564BDWG4 is an octal D-type flip-flop with 3-state outputs, also described as a bus driver. On each clock edge it latches 8 data bits and drives them onto a shared bus, with an active-low output enable pin that disconnects all outputs simultaneously when the bus is owned by another device.
What logic family does the SN74ALS564BDWG4 belong to?
It belongs to the ALS (Advanced Low-power Schottky) logic family, which offers faster propagation delay and lower static power consumption compared to standard LS-TTL devices. This makes ALS parts well suited for bus interface circuits in older embedded systems and industrial controllers where TTL voltage levels are required.
What is the significance of the 3-state outputs on the SN74ALS564BDWG4?
Three-state (tri-state) outputs present a high-impedance state when disabled, effectively disconnecting the device from the bus. This allows multiple SN74ALS564BDWG4 devices to share a single 8-bit parallel bus, with only one device driving at a time based on active-low enable signals from the bus controller.
What package does the SN74ALS564BDWG4 use?
The device is housed in a 20-pin SOIC (Small Outline Integrated Circuit) surface-mount package, JESD-30 code R-PDSO-G20. The SOIC footprint is widely used in industrial and embedded designs, making it compatible with standard automated PCB assembly equipment and straightforward to source from distributors globally.
Is the SN74ALS564BDWG4 RoHS compliant?
Yes, the SN74ALS564BDWG4 is lead-free and RoHS compliant, indicated by its JESD-609 code of e4 and Pb-free marking. This ensures it meets European Union RoHS Directive requirements and is safe for use in consumer electronics and industrial products that must comply with environmental regulations in global markets.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit