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Nexperia USA Inc. 74VHCT595D,118
- Part No.:
- 74VHCT595D,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74VHCT595D,118.pdf
- Description:
- IC SHIFT REG 8BIT SISO 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
74VHCT595D,118 from Nexperia is an 8-bit serial-in/parallel-out shift register with storage latch and 3-state outputs, designed for TTL-level input compatibility and used in digital I/O expansion, LED matrix control, and serial-to-parallel data conversion. It features separate shift (SHCP) and storage (STCP) clocks, asynchronous master reset (MR), and output enable (OE) for bus isolation. Operating from 4.5 V to 5.5 V, it supports −40 °C to +125 °C industrial temperature range.
For engineers reviewing the 74VHCT595D,118 datasheet, 74VHCT595D,118 pinout, 74VHCT595D,118 application, or 74VHCT595D,118 equivalent, this device serves as a drop-in upgrade path from legacy 74LS595 in microcontroller peripheral expansion, offers precise timing control via dual-clock architecture, and enables cascaded shift-register chains using Q7S output - critical for high-reliability industrial control and display driver designs.
Technical Context
The 74VHCT595D,118 implements two synchronized but independent 8-bit register stages: an upstream serial shift register clocked by SHCP and a downstream storage register clocked by STCP. Data propagates through the shift register on each SHCP rising edge and transfers to the storage register on each STCP rising edge - enabling pipelined operation where the shift register remains one cycle ahead when clocks are tied.
Its 3-state parallel outputs (Q0–Q7) are enabled only when OE is LOW, and all outputs enter high-impedance state otherwise. The MR input asynchronously clears the shift register (but not the storage register), while Schmitt-trigger inputs ensure noise immunity on DS, SHCP, STCP, MR, and OE pins - essential for robust operation in electrically noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74VHCT - TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures stable operation across standard 5 V rail tolerances and brown-out resilience |
| Max Clock Frequency | 170 MHz (SHCP/STCP) - supports high-speed serial loading and latch updating in real-time control loops |
| Propagation Delay | 4.0 ns (SHCP→Q7S, CL = 15 pF, VCC = 5 V) - enables tight timing budgets in synchronous digital systems |
| Output Drive | ±8 mA (VOH/VOL at VCC = 4.5 V) - sufficient to directly drive LEDs or interface with standard CMOS/TTL loads |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and outdoor embedded applications |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 Level 3 requirements for board-level ESD robustness |
Pinout & Package
74VHCT595D,118 is housed in a 16-lead SO16 plastic small outline package (SOT109-1), 3.9 mm body width, with gull-wing leads and JEDEC MS-012 compliance. Pin 1 index located at top-left corner with notch marking orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 15 | Q0–Q7 parallel outputs | 8-bit latched data presented simultaneously; 3-state controlled by OE - enables shared bus usage without contention |
| 8 | GND | Reference ground for all internal logic and output drivers - must be low-impedance connection to minimize switching noise |
| 9 | Q7S serial output | Shift register stage-7 output for daisy-chaining multiple devices - eliminates need for external wiring between ICs |
| 10 | MR (Master Reset) | Asynchronous active-LOW reset of shift register only - preserves stored data during partial system resets |
| 11 | SHCP (Shift Clock) | Rising-edge-triggered clock for serial data entry into shift register - determines maximum data rate in chain |
| 12 | STCP (Storage Clock) | Rising-edge-triggered clock transferring shift register contents to output latch - decouples data loading from output update |
| 13 | OE (Output Enable) | Active-LOW control of Q0–Q7 3-state drivers - allows dynamic bus arbitration and glitch-free output updates |
| 14 | DS (Data Serial Input) | Serial data input synchronized to SHCP - accepts standard logic levels with Schmitt-trigger hysteresis |
| 16 | VCC | Positive supply rail - must be decoupled locally with 100 nF ceramic capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent clock domains | Separate SHCP and STCP inputs allow pipelined serial load + parallel update - eliminates output glitches during shifting |
| TTL-compatible input thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V supply - ensures direct interfacing with legacy microcontrollers and logic families without level shifters |
| Schmitt-trigger inputs | Input hysteresis on all control pins (SHCP, STCP, MR, OE, DS) - rejects noise up to 0.4 V on slow-rising signals |
| High-speed propagation | 4.0 ns typical SHCP→Q7S delay at 5 V - supports >100 Mbps serial throughput in multi-device chains |
| Industrial temperature grade | Specified from −40 °C to +125 °C - validated for continuous operation in harsh thermal environments |
Applications
| LED Matrix Driver | Microcontroller I/O Expander |
|---|---|
Use Scenario: Driving 8×8 monochrome LED displays in industrial HMIs or signage systems requiring flicker-free refresh at ≥120 Hz. IC Role / Device Role / Timing Role: Serially receives row/column data from MCU via SPI-like interface, latches full byte, and drives LEDs in parallel with precise current control via external resistors. Use Value: Reduces MCU GPIO count by 8 per device; dual-clock architecture prevents visual artifacts during partial updates. | Use Scenario: Adding 8 programmable digital outputs to resource-constrained ARM Cortex-M0+ microcontrollers in smart sensor nodes. IC Role / Device Role / Timing Role: Acts as peripheral output latch - accepts serial commands over UART/SPI, stores state, and presents stable parallel outputs synchronized to STCP. Use Value: Enables deterministic output update timing independent of serial communication latency; MR pin allows safe reset without disturbing host firmware. |
| Industrial Bus Interface | Test Equipment Signal Generator |
Use Scenario: Isolating and conditioning control signals in PLC backplane modules where multiple 74VHCT595D devices share a common data bus. IC Role / Device Role / Timing Role: Provides 3-state output buffering and synchronized latching for distributed control signals - OE enables time-multiplexed bus access. Use Value: Eliminates bus contention during hot-swap events; high-impedance state ensures signal integrity when device is unpowered or in reset. | Use Scenario: Generating precise, synchronized digital waveforms (e.g., PWM patterns, protocol test vectors) in automated test equipment. IC Role / Device Role / Timing Role: Shifts preloaded pattern bits serially, then atomically presents full 8-bit vector on STCP edge - enabling sub-10 ns timing resolution. Use Value: Achieves deterministic waveform edge alignment across all 8 outputs; low propagation skew (<0.5 ns) ensures phase coherence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit serial-in/parallel-out shift register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC595DR | CMOS input thresholds (VIH = 3.85 V min), lower max fmax (100 MHz), same SO16 package | Requires 3.3 V–5 V level translation when driven by 3.3 V MCUs; unsuitable for mixed-voltage 5 V/TTL systems | Select when operating exclusively in pure CMOS environments with 3.3 V or 5 V logic and no legacy TTL interfaces. |
| 74LV595PW | Lower VCC range (1.65–5.5 V), higher VOL (0.55 V @ 8 mA), TSSOP16 only | Better suited for battery-powered 3.3 V systems but exhibits higher output voltage drop under load - reduces noise margin | Choose for space-constrained PCBs needing TSSOP footprint and wide supply flexibility, accepting reduced drive strength. |
Compared with SN74HC595DR and 74LV595PW, the 74VHCT595D,118 uniquely bridges TTL and CMOS logic domains without level shifters, delivers superior speed at 5 V, and maintains robust noise immunity - making it optimal for industrial upgrades of legacy 74LS595-based designs.
Availability
74VHCT595D,118 is available at Aetrix Electronics and suitable for industrial automation controllers, LED display subsystems, and embedded test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74VHCT595D,118 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 focused on high-volume, high-reliability logic, analog, and discrete components - delivering optimized solutions for automotive, industrial, and consumer markets.
The 74VHCT series targets industrial-grade digital interface expansion, emphasizing TTL compatibility, wide temperature operation, and robust ESD performance - specifically engineered for legacy system upgrades and noise-immune control applications.
FAQ
Can 74VHCT595D,118 operate at 3.3 V supply?
No. The 74VHCT595D,118 is specified only for 4.5 V to 5.5 V operation. Its TTL-compatible input thresholds require minimum 4.5 V VCC to guarantee VIH ≥ 2.0 V and proper recognition of HIGH inputs. At 3.3 V, input logic levels fall outside specification, risking metastability or incorrect operation - use 74LV595 or 74AHC595 for 3.3 V systems.
What happens if SHCP and STCP are tied together?
When SHCP and STCP are connected, the shift register advances one bit per clock edge, and the storage register captures the previous state - resulting in the parallel outputs always reflecting data shifted in one cycle earlier. This configuration is valid and commonly used, but introduces a one-cycle pipeline delay between serial input and parallel output visibility.
Is Q7S output inverted relative to Q7?
No. Q7S is the non-inverted serial output of the shift register's final stage - it equals the value shifted out of Q7 on the next SHCP edge. Q7S is functionally identical to Q7 but delayed by one SHCP cycle and available before Q7 updates, enabling seamless cascading without external inversion.
Does MR affect the storage register outputs?
No. MR asynchronously clears only the 8-bit shift register; the storage register and its Q0–Q7 outputs remain unchanged. This allows resetting serial data flow while preserving currently displayed or latched output states - critical for glitch-free operation during partial system recovery.
74VHCT595D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74VHCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74VHCT595D,118 FAQ
1.How can I place an order for 74VHCT595D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT595D,118 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 74VHCT595D,118 reliable?
The price and inventory of 74VHCT595D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT595D,118 is usually 5 days.
3.What payment methods are accepted for 74VHCT595D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT595D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT595D,118?
74VHCT595D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT595D,118 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 74VHCT595D,118?
For technical support, including 74VHCT595D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT595D,118 requirements.
6.How does Aetrix verify that 74VHCT595D,118 is sourced from the original manufacturer or authorized distributors?
All 74VHCT595D,118 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 74VHCT595D,118 meets industry standards.
7.What is the process for return or replacement of 74VHCT595D,118?
All 74VHCT595D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT595D,118, 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 74VHCT595D,118 part is unused and in its original packaging.
Return procedure for 74VHCT595D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74VHCT595D,118 Tags
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SN74HC164DR
Texas Instruments
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SN74HC595DR
Texas Instruments
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74HC595PW,118
Nexperia USA Inc.
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SN74HC165PWR
Texas Instruments
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HEF4094BT,653
Nexperia USA Inc.
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74HC595D,118
Nexperia USA Inc.
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SN74HC595PWR
Texas Instruments
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74HC165D,653
Nexperia USA Inc.
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SN74LV165APWR
Texas Instruments
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74HC595BQ,115
Nexperia USA Inc.
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74HC165BQ,115
Nexperia USA Inc.
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CD4094BPWR
Texas Instruments
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