MC74VHC245DTG ON Semiconductor Integrated Circuit (Small Outline Packages) In Stock
ON Semiconductor MC74VHC245DTG is an octal bidirectional bus transceiver in the VHC family, packaged in a 20-lead SOIC (R-PDSO-G20). Supports 2 V to 5.5 V supply voltage with 8 mA output drive and high-speed switching for data bus buffering. RoHS compliant and available from global distributors with worldwide shipping.
- Manufacturer
- ON Semiconductor
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- MC74VHC245DTG Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2105(MOQ 1000)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal (8-bit) bidirectional bus transceiver with common direction control for simultaneous A-to-B or B-to-A data transfer
- VHC CMOS logic family supports 2 V to 5.5 V supply range with low quiescent current for battery-powered and mixed-voltage systems
- 8 mA output sink current (I_OL) enables reliable logic-level bus driving across standard CMOS and TTL-compatible loads
- 20-lead SOIC (JESD-30 R-PDSO-G20) package with RoHS-compliant (e4) lead-free termination for global market compliance
Applications
The MC74VHC245DTG is well suited for 8-bit parallel data bus buffering and level translation between microcontroller I/O ports and peripheral devices in embedded systems operating at 3.3 V or 5 V. Its bidirectional transceiver architecture simplifies bus expansion in memory interfaces, LCD controllers, and FPGA I/O expansion boards. The high-speed VHC logic family also makes it a reliable choice for industrial communication backplanes and data acquisition front ends where propagation delay below 10 ns is required.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | 9.48 |
| YTEOL | 0 |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | AHC/VHC |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | RAIL |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 8.5ns |
| Propagation Delay (tpd) | 13.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range and output drive current does MC74VHC245DTG support?
The MC74VHC245DTG operates from 2 V to 5.5 V supply voltage and provides an 8 mA output sink current (I_OL = 8 mA). This combination makes it compatible with both 3.3 V and 5 V logic systems, enabling direct interfacing between microcontrollers and peripheral ICs without external current-limiting resistors in most standard bus configurations.
How does the bidirectional control on MC74VHC245DTG work for bus expansion designs?
The MC74VHC245DTG uses a common direction control pin (DIR) to select data flow direction for all 8 bits simultaneously, either from A to B or B to A. An output enable (OE) pin tri-states all outputs when deasserted, allowing multiple transceivers to share a common bus without contention. This makes it straightforward to expand 8-bit parallel buses in embedded memory interfaces or GPIO expanders.
Which package does MC74VHC245DTG use and how does that affect PCB layout?
The MC74VHC245DTG comes in a 20-lead narrow SOIC package (JESD-30 R-PDSO-G20) with 1.27 mm pin pitch, a body width of approximately 3.9 mm, and a 7.5 mm body length. This compact footprint allows placement in space-constrained PCB areas and is compatible with standard SMT reflow assembly processes, making it a practical choice for compact embedded and industrial boards.
When should a designer choose MC74VHC245DTG over a 74LVC245 for bus buffering?
MC74VHC245DTG (VHC family) is preferred when the design requires operation at supply voltages above 3.6 V up to 5.5 V, since 74LVC245 is typically limited to 3.6 V maximum. For 5 V logic environments or mixed 3.3 V/5 V boards requiring a 5 V-tolerant transceiver, MC74VHC245DTG offers the same 8-bit bidirectional functionality with VHC-speed switching (propagation delay approximately 5 to 7 ns) at reduced cost compared to specialized level-translator ICs.
Related Guides
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
Why Buy from FindMyChip
About ON Semiconductor
ON Semiconductor (onsemi) provides intelligent power and sensing technologies for automotive, industrial, IoT, and cloud infrastructure applications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1000+ | $0.2818 | $281.80 |
| 1875+ | $0.2700 | $506.25 |
| 10000+ | $0.2512 | $2512.00 |
| 100000+ | $0.2105 | $21050.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”