CD74HC640M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC640M is a high-speed CMOS octal inverting bus transceiver from Texas Instruments featuring bidirectional data flow, 3-state outputs, direction control, and a 20-pin SOIC package. Enables efficient bidirectional data transfer between buses at HC logic speeds. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC640M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6000(MOQ 100)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC640M?
- Octal 8-bit bidirectional inverting transceiver with common direction control pin
- 3-state outputs allowing multiple transceivers to share a single bus without contention
- High-speed HC CMOS family with 50 pF load capacitance tolerance for robust bus driving
- 20-pin SOIC package with RoHS-compliant e4 lead-free construction
What is CD74HC640M used for?
The CD74HC640M is used in microprocessor and microcontroller bus systems where bidirectional data transfer between two buses is required with signal inversion. It is commonly employed in memory interface circuits, peripheral bus expansion, and backplane systems where 3-state control and direction switching are necessary. The device also appears in FPGA prototype boards, embedded computing modules, and industrial control equipment needing reliable high-speed bus buffering.
What are the specifications of CD74HC640M?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.0078A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| 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) | 0.16mA |
| Prop. Delay@Nom-Sup | 20ns |
| Propagation Delay (tpd) | 135ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 6V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the CD74HC640M datasheet?
CD74HC640M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC640M?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the CD74HC640M used for?
The CD74HC640M is an octal inverting bus transceiver used to interface two bidirectional data buses with signal inversion, 3-state outputs, and direction control, commonly found in microprocessor bus expansion and memory interface circuits.
Does the CD74HC640M support bidirectional data flow?
Yes, the CD74HC640M supports bidirectional data transfer with a common direction control pin, allowing data to flow in either direction between the A and B buses depending on the logic level applied to the direction control input.
What logic family does the CD74HC640M belong to?
The CD74HC640M belongs to the HC/UH high-speed CMOS logic family, offering fast switching speeds, low power consumption, and compatibility with TTL logic levels, making it suitable for modern digital system designs.
What package is the CD74HC640M available in?
The CD74HC640M comes in a 20-pin small outline (SOIC) surface-mount package, which is RoHS and halogen-free compliant per JESD-609 e4 code, supporting automated PCB assembly.
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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
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $2.2000 | $220.00 |
| 250+ | $2.0700 | $517.50 |
| 500+ | $1.8000 | $900.00 |
| 1000+ | $1.7000 | $1700.00 |
| 10000+ | $1.6000 | $16000.00 |
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