My Inquiry
My Account
Nexperia USA Inc. 74LVC8T595PWJ
- Part No.:
- 74LVC8T595PWJ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC8T595PWJ.pdf
- Description:
- 74LVC8T595PW/SOT360/TSSOP20
- Quantity:
- Payment:
- Shipping:
Inventory:6,048
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC8T595 from Nexperia is a dual-supply 8-bit serial-in/parallel-out or serial-out shift register with independent shift and storage registers, 3-state outputs, and IOFF-enabled partial power-down operation. It supports voltage translation between 1.1 V–5.5 V domains (e.g., 1.8 V logic controlling 3.3 V LEDs), features ±24 mA output drive at 3.0 V, and operates from –40 °C to +125 °C.
For engineers reviewing the 74LVC8T595 datasheet, 74LVC8T595 pinout, 74LVC8T595 application, or 74LVC8T595 equivalent, key selection criteria include dual-voltage domain timing isolation, suspend-mode high-impedance output behavior when VCC(A) = GND, and guaranteed output skew ≤1.0 ns across Q0–Q7 at 5.0 V.
Technical Context
The device implements two synchronized but independently clocked 8-bit registers: an upstream shift register clocked by SHCP (data shifted on rising edge) and a downstream storage register clocked by STCP (data latched on rising edge). This architecture enables pipelined data flow - e.g., new serial data can be loaded while previous parallel outputs remain stable.
VCC(A) powers control inputs (MR, SHCP, STCP, OE, DS) and serial output Q7S; VCC(B) powers parallel outputs Q0–Q7. The IOFF circuit disables all Qn outputs during VCC(A) power-down, preventing backflow current, and forces Qn into high-impedance OFF-state in suspend mode (VCC(A) = GND).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 8-bit serial-in/parallel-out or serial-out shift register with separate shift/storage clocks and 3-state outputs |
| VCC(A) Range | 1.1 V to 5.5 V - powers MR, SHCP, STCP, OE, DS, and Q7S; enables level translation for control-side logic |
| VCC(B) Range | 1.1 V to 5.5 V - powers Q0–Q7 outputs; allows independent voltage domain for load-side interface |
| Output Drive | ±24 mA at VCC(A) = VCC(B) = 3.0 V - sufficient to directly drive LEDs or standard CMOS loads without external buffers |
| Propagation Delay | 1.0 ns (min) to 7.2 ns (max) SHCP→Q7S at 5.0 V - supports >175 MHz serial clock rates in high-speed data chaining |
| Output Skew | ≤1.0 ns max Q0–Q7 (VCC(A)=5.0 V, VCC(B)=5.0 V) - ensures simultaneous parallel output assertion for timing-critical displays or bus interfaces |
| IOFF Leakage | ±2 μA max at VCC(A)=0 V, VCC(B)=5.5 V - guarantees safe hot-swap and partial power-down in mixed-rail systems |
Pinout & Package
TSSOP20 package (SOT360-1), 4.4 mm body width, 0.65 mm pitch, 20-pin surface-mount. Pin 1 index located at top-left corner; exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC(B) | Supply for Qn outputs | Defines logic-high level and drive strength of parallel outputs Q0–Q7; isolated from control-side supply |
| VCC(A) | Supply for control inputs & Q7S | Powers MR, SHCP, STCP, OE, DS, and serial output Q7S; enables voltage translation between domains |
| Q0–Q7 | Parallel data outputs | 3-state buffered outputs referenced to VCC(B); individually controllable via OE and STCP |
| Q7S | Serial data output | Shift register's serial output stage; referenced to VCC(A); used for daisy-chaining multiple devices |
| DS | Serial data input | Data entry point for shift register; accepts up to 5.5 V regardless of VCC(A) level |
| SHCP | Shift clock input | Rising-edge-triggered clock for shifting data through 8-bit shift register |
| STCP | Storage clock input | Rising-edge-triggered clock for transferring shift register contents to parallel output latches |
| MR | Master reset (active LOW) | Asynchronously clears shift register only; does not affect storage register or Qn outputs |
| OE | Output enable (active LOW) | Controls 3-state behavior of Q0–Q7; high-impedance when HIGH, enabled when LOW |
| GND | Ground reference | Four dedicated ground pins (10, 11, 12, 13) minimize noise coupling and improve signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply domains | VCC(A) and VCC(B) each support 1.1 V–5.5 V - enables seamless interfacing between disparate logic families (e.g., 1.8 V FPGA to 5.0 V LED array) |
| IOFF partial power-down | Qn outputs enter high-impedance OFF-state when VCC(A) = GND - prevents back-current and supports hot-plug operation |
| Separate shift/storage clocks | SHCP and STCP operate independently - allows continuous serial loading while holding stable parallel outputs |
| Low output skew | ≤1.0 ns max skew across Q0–Q7 at 5.0 V - critical for synchronous display drivers and parallel bus applications |
| Wide temperature range | Specified from –40 °C to +125 °C - suitable for automotive under-hood, industrial motor control, and telecom infrastructure |
Applications
| LED Matrix Driver | Industrial I/O Expander |
|---|---|
Use Scenario: Driving 8×8 monochrome LED matrix with row/column scanning using microcontroller GPIO. IC Role / Device Role / Timing Role: Serial-to-parallel converter translating SPI data into parallel column-enable signals; Q7S daisy-chained to next stage. Use Value: Eliminates need for 8-bit port expanders; dual-supply operation allows 3.3 V MCU to safely drive 5 V LED columns without level shifters. | Use Scenario: Adding isolated digital outputs to PLC base unit with mixed 24 V DC field-side and 3.3 V controller-side rails. IC Role / Device Role / Timing Role: Parallel output latch receiving serial commands over RS-485 interface; OE controlled by system watchdog for fail-safe shutdown. Use Value: IOFF protection prevents backfeed from 24 V field circuits into 3.3 V controller during power loss or maintenance. |
| Automotive Display Interface | FPGA Configuration Chain |
Use Scenario: Interfacing low-voltage automotive infotainment SoC (1.2 V core) to 3.3 V segment LCD driver ICs. IC Role / Device Role / Timing Role: Voltage-translating shift register synchronizing display update packets; STCP aligned to display frame sync signal. Use Value: Guaranteed <1.2 ns output skew ensures clean segment activation timing across full display width, eliminating ghosting artifacts. | Use Scenario: Cascading configuration data from flash memory to Xilinx Artix-7 FPGA via JTAG boundary scan chain. IC Role / Device Role / Timing Role: Serial-in/serial-out repeater extending JTAG TDO path; Q7S feeds next device's DS with minimal added delay. Use Value: Propagation delay ≤1.0 ns at 5 V enables reliable operation at 100+ MHz JTAG clock rates without timing closure issues. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit dual-supply shift register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV8154IPW | Single-supply (1.65 V–5.5 V); no VCC(A)/VCC(B) separation; lacks IOFF and suspend mode | Cannot isolate control and output domains; unsuitable for partial power-down or mixed-rail hot-swap | Select when only one supply rail exists and IOFF is unnecessary |
| 74AVC8T245PW | 8-bit dual-supply bus transceiver (not shift register); no internal storage register or clocking logic | Provides bidirectional level translation only; no serial-to-parallel conversion capability | Select only for static level-shifting; not a functional substitute for shift/register functionality |
Compared with SN74LV8154IPW and 74AVC8T245PW, the 74LVC8T595 uniquely delivers dual-domain timing isolation, pipelined shift+storage operation, and certified IOFF safety - making it the sole choice for robust mixed-voltage serial interface expansion with fail-safe power sequencing.
Availability
74LVC8T595 is available at Aetrix Electronics and suitable for LED matrix drivers, industrial I/O expanders, automotive display interfaces, and FPGA configuration chains requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74LVC8T595 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in high-volume applications.
The 74LVC family targets low-voltage, high-speed general-purpose logic with robust ESD tolerance and wide supply flexibility - designed specifically for power-constrained and mixed-rail embedded systems.
FAQ
What happens to Q0–Q7 outputs when VCC(A) is powered down to 0 V?
When VCC(A) reaches GND, the device enters suspend mode: all Q0–Q7 outputs immediately enter high-impedance OFF-state regardless of OE or STCP state. This IOFF behavior prevents back-current flow from VCC(B)-powered loads into the unpowered control domain, satisfying IEC 61000-4-2 and automotive hot-swap requirements.
Can SHCP and STCP be tied together for simplified operation?
Yes - connecting SHCP and STCP enables single-clock operation where the storage register always lags the shift register by one cycle. However, this eliminates independent control of serial loading vs. parallel output update, reducing flexibility in real-time display or buffering applications requiring asynchronous updates.
What is the maximum clock frequency supported for STCP at 3.3 V supply?
At VCC(A) = VCC(B) = 3.3 V and Tamb = +25 °C, the maximum STCP frequency is 130 MHz. Over the full –40 °C to +125 °C range, it de-rates to 40 MHz minimum - verified by dynamic characterization tables covering worst-case process/voltage/temperature corners.
How does the MR (Master Reset) pin affect the storage register and parallel outputs?
MR is asynchronous and active LOW, but affects only the 8-bit shift register - clearing it to all zeros. It has no effect on the storage register contents or the Q0–Q7 parallel outputs, which retain their last latched values until updated by STCP. This allows safe reset of incoming data stream without disrupting active display or I/O states.
74LVC8T595PWJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Shift Register
- Output Type:
- Tri-State
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Serial to Parallel, Serial
- Voltage - Supply:
- 1.1V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVC8T595PWJ FAQ
1.How can I place an order for 74LVC8T595PWJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC8T595PWJ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74LVC8T595PWJ reliable?
The price and inventory of 74LVC8T595PWJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC8T595PWJ is usually 5 days.
3.What payment methods are accepted for 74LVC8T595PWJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC8T595PWJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC8T595PWJ?
74LVC8T595PWJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC8T595PWJ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74LVC8T595PWJ?
For technical support, including 74LVC8T595PWJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC8T595PWJ requirements.
6.How does Aetrix verify that 74LVC8T595PWJ is sourced from the original manufacturer or authorized distributors?
All 74LVC8T595PWJ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LVC8T595PWJ meets industry standards.
7.What is the process for return or replacement of 74LVC8T595PWJ?
All 74LVC8T595PWJ units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC8T595PWJ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74LVC8T595PWJ part is unused and in its original packaging.
Return procedure for 74LVC8T595PWJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC8T595PWJ Tags
-
SN74HC164DR
Texas Instruments
-
SN74HC595DR
Texas Instruments
-
74HC595PW,118
Nexperia USA Inc.
-
SN74HC165PWR
Texas Instruments
-
HEF4094BT,653
Nexperia USA Inc.
-
74HC595D,118
Nexperia USA Inc.
-
SN74HC595PWR
Texas Instruments
-
74HC165D,653
Nexperia USA Inc.
-
SN74LV165APWR
Texas Instruments
-
74HC595BQ,115
Nexperia USA Inc.
-
74HC165BQ,115
Nexperia USA Inc.
-
CD4094BPWR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
