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Home Products Integrated Circuits (ICs)Logic - Shift Registers~~74HCT595DB-Q100J~~

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74HCT595DB-Q100J - Nexperia USA Inc.

Name: Nexperia USA Inc. 74HCT595DB-Q100J
Brand: Nexperia USA Inc.
SKU: 74HCT595DB-Q100J
Price: 0.531 USD
Availability: InStock
Rating: 5 (1 reviews)

Manufacturer Part Number: 74HCT595DB-Q100J

Manufacturer: Nexperia

Allelco Part Number: 98D-74HCT595DB-Q100J

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 4,752 pcs available, New & Original

Parts Description: IC SHIFT REGISTER 8BIT 16SSOP

Package: 16-SSOP

Data sheet: 74HCT595DB-Q100.pdf

Datasheets
Cylindrical Battery Holders.pdf

HTML Datasheet
Cylindrical Battery Holders.pdf

PCN Packaging
Label Chg 12/Mar/2017.pdf All Dev Label Chgs 2/Aug/2020.pdf

PCN Obsolescence/ EOL
Mult Devices EOL 30/Jun/2018.pdf Mult Devices EOL 12/Jul/2018.pdf Mult Dev 31/Dec/2019.pdf

RoHs Status: ROHS3 Compliant

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Quantity	Unit Price	Ext. Price
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10+	$0.748	$7.48
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100+	$0.586	$58.60
500+	$0.548	$274.00
1000+	$0.531	$531.00

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Specifications

74HCT595DB-Q100J Tech Specifications
Nexperia USA Inc. - 74HCT595DB-Q100J technical specifications, attributes, parameters and parts with similar specifications to Nexperia USA Inc. - 74HCT595DB-Q100J

Product Attribute	Attribute Value
Manufacturer	Nexperia
Voltage - Supply	4.5V ~ 5.5V
Supplier Device Package	16-SSOP
Series	Automotive, AEC-Q100, 74HCT
Package / Case	16-SSOP (0.209', 5.30mm Width)
Package	Tape & Reel (TR)
Output Type	Tri-State

Product Attribute	Attribute Value
Operating Temperature	-40°C ~ 125°C
Number of Elements	1
Number of Bits per Element	8
Mounting Type	Surface Mount
Logic Type	Shift Register
Function	Serial to Parallel, Serial
Base Product Number	74HCT595

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

How does the 74HCT595DB-Q100J handle clock synchronization in multi-device daisy-chained configurations, and what timing constraints should be considered when cascading multiple shift registers in an automotive lighting control system?: The 74HCT595DB-Q100J supports standard daisy-chaining through its serial output (Q7S) pin, enabling cascaded operation with other 74HCT595 devices. In automotive applications such as LED matrix control, clock skew between stages must remain under 10 ns to prevent data corruption during high-speed shifting at frequencies exceeding 20 MHz. Designers should ensure consistent propagation delays across devices and account for setup and hold times relative to the clock edge—typically 5 ns and 2 ns respectively at 5V supply. Additionally, the tri-state outputs require careful enable/disable sequencing to avoid bus contention in shared-bus architectures.

What are the key differences between the 74HCT595DB-Q100J and SN74AHCT595DBR in terms of input threshold compatibility and power consumption when interfacing with a 3.3V microcontroller in a mixed-voltage automotive ECU design?: While both devices operate within similar voltage ranges, the 74HCT595DB-Q100J uses HCT logic with TTL-compatible inputs, ensuring reliable recognition of 3.3V signals from microcontrollers without level-shifting circuits. In contrast, the SN74AHCT595DBR features AHC technology with lower input thresholds, offering better noise immunity but requiring tighter voltage margins at 3.3V. Power consumption differs slightly: the HCT version draws approximately 8 mA static current at 5V, whereas the AHCT variant consumes about 6 mA due to optimized transistor sizing. For automotive ECUs where signal integrity and thermal efficiency matter, the choice depends on noise environment and total system quiescent current budget.

Can the 74HCT595DB-Q100J be used reliably in cold-start environments typical of electric vehicle battery management systems operating below -40°C?: Yes, the 74HCT595DB-Q100J is qualified to AEC-Q100 Grade 1 standards, confirming operation down to -40°C. However, performance near this boundary requires attention to supply ramp-up rates and output drive strength. At -40°C, propagation delay increases by roughly 15–20% compared to room temperature, which may affect timing margins in high-speed shift operations. Designers should verify that clock frequencies remain within specified limits and consider derating output current to maintain signal integrity during extreme cold starts common in EV BMS modules.

What precautions are necessary when using the 74HCT595DB-Q100V output enable (OE) pin in noisy automotive environments to prevent unintended register updates or glitches?: The OE pin must be actively driven by a stable logic signal rather than left floating, as CMOS inputs can latch unpredictably under transient conditions. In harsh EMI environments, adding a small pull-down resistor (e.g., 10 kΩ) combined with filtering via a series capacitor (e.g., 100 pF) minimizes susceptibility to RF-induced false triggering. Furthermore, OE should only transition when the internal latch enable (LAT) is stable to avoid partial output updates. This ensures deterministic behavior in safety-critical systems like brake light controllers or dashboard indicator clusters.

How does the latch enable function of the 74HCT595DB-Q100J interact with the master reset (MR) pin, and what sequence ensures predictable state transitions during power-on initialization?: The MR pin asynchronously clears all outputs regardless of clock or latch signals, but proper initialization requires releasing MR only after the supply voltage stabilizes above 4.5V. Once MR is deasserted, the first rising edge of SHCP latches the serial data into the register, while the subsequent rising edge of STCP transfers it to the output latches. To avoid glitches during startup, designers often insert a short delay (~1 ms) after power-up before asserting LAT, ensuring internal node stabilization. This sequence prevents spurious output changes in multiplexed display systems common in infotainment backlighting.

Is the 74HCT595DB-Q100J suitable for driving inductive loads such as relay coils in automotive HVAC control modules, and what external components are recommended?: Direct driving of inductive loads is not advised due to potential shoot-through currents and voltage spikes. Instead, use the shift register’s outputs to control external NPN transistors or MOSFET drivers rated for coil energy. A flyback diode (e.g., 1N4148) across each relay coil suppresses back-EMF, while current-limiting resistors ensure safe turn-on/turn-off transients. Given the IC’s maximum output current of ±6 mA, external buffering is essential for loads drawing more than 100 mA, maintaining reliability in high-vibration automotive environments.

How does temperature variation affect the propagation delay mismatch between the 74HCT595DB-Q100J’s shift and output paths, and why might this impact synchronous update designs?: Propagation delay varies with temperature: tPHL and tPLH increase by approximately 12 ns per 10°C rise from 25°C to 125°C. More critically, the difference between shift-in (via SHCP) and output-latch (via STCP) delays can exceed 25 ns at high temperatures. In synchronous designs requiring all outputs to change simultaneously (e.g., strobing a 7-segment display), this mismatch causes visible flicker unless compensated by inserting wait states or using faster devices. The 74HCT595’s inherent skew makes it less ideal for tightly synchronized multi-bit updates compared to dedicated parallel-load registers.

What are the implications of using the 74HCT595DB-Q100J in a 5.5V system with marginal supply regulation, particularly regarding input hysteresis and noise tolerance?: At the upper limit of its 4.5V–5.5V range, input hysteresis drops by ~0.3 V compared to nominal 5V operation, reducing noise immunity. With a typical hysteresis of 0.8 V at 5V, falling below 5V increases susceptibility to ringing on digital lines. If the supply dips near 4.5V during load transients—common in unregulated automotive buses—input thresholds shift downward, potentially causing erroneous state detection. Adding local decoupling capacitors (≥10 µF tantalum + 0.1 µF ceramic) and limiting trace lengths improves stability, especially when driving long cables in distributed lighting networks.

How many 74HCT595DB-Q100J devices can be safely daisy-chained in a single chain before cumulative propagation delay degrades system timing beyond acceptable limits?: Assuming a maximum allowable chain length of 100 ns total delay and a propagation delay of ~18 ns per device at 5V and 25°C, only five devices can be chained before exceeding this threshold. However, in practice, designers reduce this number further to accommodate temperature drift and manufacturing tolerances. For automotive CAN-controlled LED strips, three to four ICs per chain are typical, with buffered repeaters added every six stages to restore signal integrity and maintain deterministic behavior under worst-case conditions.

Why might the 74HCT595DB-Q100J exhibit increased leakage current when operated at 125°C, and how does this influence battery-powered automotive subsystems?: At elevated temperatures, subthreshold conduction in the CMOS structure rises significantly, increasing off-state leakage by up to 20 µA per output pin at 125°C compared to 25°C. Though individually small, this accumulates across eight outputs and impacts standby power in low-power modes. In battery management systems relying on ultracapacitors for backup memory retention, such leakage could discharge storage over days rather than months. Minimizing active time and disabling unused outputs via OE are effective mitigation strategies in thermally stressed zones like engine compartments.

Can the 74HCT595DB-Q100J directly interface with LVCMOS outputs from modern microcontrollers without additional level translation circuitry?: Yes, the HCT family is designed for TTL/CMOS compatibility, and the 74HCT595DB-Q100J accepts LVCMOS 3.3V logic high levels (typically >2.0 V) as valid inputs. However, verifying VIH(min) = 2.0 V at 4.5V supply ensures reliable recognition even with process variations. Marginally compliant signals near threshold may cause metastability if edges are slow. Adding series termination resistors (e.g., 22 Ω) improves signal quality on long traces, making direct connection viable for most modern MCUs in automotive-grade designs.

What role does the 74HCT595DB-Q100J play in implementing SPI-to-parallelog interfaces for legacy sensor modules in retrofitted automotive diagnostic tools?: The 74HCT595DB-Q100J acts as a bridge between SPI masters (e.g., debuggers) and parallel-load sensors requiring strobed data acquisition. By shifting out 8 bits serially and latching them on the LAT pulse, it converts continuous SPI traffic into stable parallel outputs usable by ADC inputs or status registers. This avoids polling overhead and reduces MCU interrupt frequency. Careful timing ensures the sensor’s setup/hold window is met, typically requiring LAT pulses wider than 100 ns to guarantee capture across process corners.

Parts with Similar Specifications

The three parts on the right have similar specifications to Nexperia USA Inc. 74HCT595DB-Q100J

Product Attribute
Part Number	74HCT595D-Q100,118	74HCT595PW-Q100118	74HCT595PW-Q100,11	74HCT595DB,112
Manufacturer	Nexperia USA Inc.	NXP USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Series	-	-	-	-
Function	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Number of Elements	-	-	-	-
Logic Type	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Output Type	-	Current - Unbuffered	Voltage - Buffered	-
Voltage - Supply	-	-	-	-
Number of Bits per Element	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Base Product Number	-	DAC34H84	MAX500	ADS62P42

74HCT595DB-Q100J Datasheet PDF

Download 74HCT595DB-Q100J pdf datasheets and Nexperia USA Inc. documentation for 74HCT595DB-Q100J - Nexperia USA Inc..

Datasheets: Cylindrical Battery Holders.pdf
HTML Datasheet: Cylindrical Battery Holders.pdf
PCN Packaging: Label Chg 12/Mar/2017.pdf All Dev Label Chgs 2/Aug/2020.pdf
PCN Obsolescence/ EOL: Mult Devices EOL 30/Jun/2018.pdf Mult Devices EOL 12/Jul/2018.pdf Mult Dev 31/Dec/2019.pdf

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Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.
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Aug 31, 2026

Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
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Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
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one of my hobbies is skydiving. and when i'm skydiving this works great.
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Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

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Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

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