SN74AHC273PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74AHC273PWG4 is an octal D-type flip-flop with active-low clear, operating up to 70 MHz from a 2 V to 5.5 V supply in a 20-pin TSSOP package. Eight edge-triggered storage elements with a common clock and clear enable parallel data latching in bus interfaces, data pipelines, and register-file designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AHC273PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74AHC273PWG4?
- 8-bit octal D-type flip-flop with active-low asynchronous clear
- Maximum clock frequency of 70 MHz at nominal supply
- Wide supply range from 2 V to 5.5 V (AHC logic family)
- 20-pin TSSOP-20 compact package for space-constrained PCBs
- Output sink current up to 8 mA per pin
- 50 pF load capacitance rating for standard bus drive
What is SN74AHC273PWG4 used for?
SN74AHC273PWG4 is used in address and data bus latching for microprocessor and FPGA interfaces, output port expansion on embedded controllers, and pipeline register stages in digital signal processing boards. Its wide 2 V to 5.5 V supply range also makes it suitable for mixed-voltage board designs bridging 3.3 V and 5 V logic domains.
What are the specifications of SN74AHC273PWG4?
| YTEOL | 0 |
| Family | AHC/VHC/H/U/V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 70000000Hz |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| 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 | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 12.5ns |
| Propagation Delay (tpd) | 19.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 100MHz |
| 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 SN74AHC273PWG4 datasheet?
SN74AHC273PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74AHC273PWG4?
Compatible alternatives and drop-in replacements for SN74AHC273PWG4:
D Flip-Flop, AHC/VHC/H/U/V Series, 1-Func, Positive Edge Triggered, 8-Bit, True Output, CMOS, PDSO20
Frequently Asked Questions
At what maximum clock frequency can SN74AHC273PWG4 reliably latch data in a digital pipeline?
SN74AHC273PWG4 supports a maximum operating frequency of 70 MHz at nominal supply voltage, making it practical for high-speed bus interfaces, address demultiplexers, and data pipeline registers in both 3.3 V and 5 V embedded systems.
How does the active-low asynchronous clear pin of SN74AHC273PWG4 help in power-up initialization?
Driving the active-low CLR pin low immediately resets all 8 flip-flop outputs to logic 0, regardless of clock state. This feature allows the host controller to force a known-zero state at power-up without waiting for 8 clock cycles, improving initialization determinism in safety-critical or real-time designs.
Does SN74AHC273PWG4 fit designs that mix 3.3 V and 5 V logic levels on the same board?
Yes. The AHC family operates from 2 V to 5.5 V supply, so the device can be powered from 3.3 V or 5 V rails. AHC inputs accept standard TTL and CMOS thresholds, and outputs can interface with devices in the same voltage domain without level-shift circuitry in most cases.
What is the JESD-609 moisture sensitivity rating of SN74AHC273PWG4 and what storage precautions are needed?
SN74AHC273PWG4 carries a JESD-609 e4 code, indicating it is a lead-free, RoHS-compliant part. The moisture sensitivity level should be confirmed on the device package label; MSL-rated parts require controlled dry-bag storage and bake-out before SMT reflow to prevent delamination or popcorning.
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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.
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