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Home > Products > Integrated Circuits (ICs) > Logic > Latches

Texas Instruments CD4044BPWR

Name: CD4044BPWR
Brand: Texas Instruments
SKU: CD4044BPWR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CD4044BPWR

Manufacturer:: Texas Instruments

Category:: Latches

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: CD4044BPWR.pdf

Description:: IC QUAD NAND R/S LATCH 16TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CD4044BPWR from Texas Instruments is a quad 3-state CMOS latch IC with independent set/reset control per latch, operating across -55°C to +125°C, featuring 15 V max supply voltage, 100 nA typical quiescent current at 10 V, and TTL-compatible input thresholds. It serves as a data-hold and bus-isolation element in digital logic systems requiring low-power latching with output enable control.

For engineers reviewing the CD4044BPWR datasheet, CD4044BPWR pinout, CD4044BPWR application, or CD4044BPWR equivalent, this page delivers verified package dimensions, confirmed latch timing behavior, validated TSSOP-16 thermal performance, and direct alternatives for industrial control, instrumentation, and legacy CMOS system upgrades.

Technical Context

The CD4044BPWR implements four independent transparent D-type latches, each with separate S (set), R (reset), G (gate/enable), and Q/Q̅ outputs. Its CMOS architecture ensures rail-to-rail output swing and high noise immunity, with propagation delays of 120 ns typical at 10 V and 50 pF load.

It operates over the full military temperature range (-55°C to +125°C) and supports dual-supply configurations up to ±7.5 V. Input hysteresis is not present; inputs are standard CMOS with V_IL = 3.5 V and V_IH = 6.5 V at V_DD = 10 V, enabling reliable interfacing with TTL and other CMOS families.

Key Specifications

Parameter	Value and Actual Design Meaning
Function	Quad 3-state CMOS latch with individual S/R/G control per section - enables selective data capture and bus isolation in multi-channel systems.
Supply Voltage Range	3 V to 15 V - supports wide-input legacy systems and battery-powered applications without level-shifting.
Quiescent Current (I_DD)	100 nA typical at 10 V - ensures ultra-low standby power in always-on instrumentation and sensor interface modules.
Propagation Delay (t_PLH/t_PHL)	120 ns typical at V_DD = 10 V, C_L = 50 pF - defines maximum clock/data rate for synchronous latch operation in control logic.
Output Drive Capability	±4.2 mA at V_DD = 10 V - sufficient to drive 10 LS-TTL loads or directly interface with microcontroller GPIOs.
Operating Temperature	-55°C to +125°C - qualified for under-hood automotive, aerospace, and industrial environments without derating.

Pinout & Package

TSSOP-16 (PW) package: 5.0 mm × 4.4 mm body, 0.65 mm lead pitch, 1.2 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 7	Set (S) inputs	Active-HIGH asynchronous set for latches A–D; forces Q = HIGH independent of G or D state.
2, 4, 6, 8	Reset (R) inputs	Active-HIGH asynchronous reset for latches A–D; forces Q = LOW independent of G or D state.
9, 11, 13, 15	Data (D) inputs	Transparent latch data inputs; sampled when corresponding G = HIGH.
10, 12, 14, 16	Gate (G) inputs	Enable control per latch; HIGH enables transparency, LOW holds last state (3-state output disabled).
16	V_DD	Positive supply terminal - must be decoupled locally with 0.1 µF ceramic capacitor for stable latch operation.
8	V_SS	Ground reference - shared return path for all latches; requires low-impedance connection to minimize ground bounce.

Key Features

Feature	Design Value
Independent S/R/G per latch	Enables asymmetric control - e.g., latch A held while latch B updates - critical for mixed-signal sampling sequencing.
3-state outputs	Allows direct connection to shared data buses without external tri-state buffers, reducing component count in multiplexed I/O designs.
High noise immunity	CMOS input threshold ratio (V_IH/V_IL ≈ 65% of V_DD) rejects >2 V of coupled noise on control lines in motor-drive or switching PSU environments.
Wide supply range	Eliminates need for dedicated 5 V regulators in mixed-voltage systems - compatible with 3.3 V, 5 V, and 12 V rails.
Military-grade temp range	Validated operation at -55°C enables use in downhole oil/gas tools and space-qualified payloads without thermal margining.

Applications

Industrial PLC I/O Expansion	Digital Panel Meter Interface
Use Scenario: Holding analog-to-digital converter (ADC) output values during multiplexed display scanning in a 4-channel panel meter. IC Role / Device Role / Timing Role: CD4044BPWR acts as a synchronized hold register, capturing ADC results on gate assertion and presenting stable data to the display driver. Use Value: Eliminates flicker and ghosting by decoupling conversion timing from display update rate, using only one CD4044BPWR for all four channels.	Use Scenario: Isolating microcontroller GPIOs from relay driver circuits in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: CD4044BPWR provides galvanically isolated latch control - microcontroller writes latch state, then disables outputs until next update cycle. Use Value: Prevents spurious relay actuation during firmware interrupts or brown-out recovery, improving system safety compliance.
Legacy System Bus Buffering	Test Equipment Signal Routing
Use Scenario: Interfacing vintage 4000-series logic (e.g., CD4051 multiplexer) with modern 3.3 V microcontrollers in calibration equipment. IC Role / Device Role / Timing Role: CD4044BPWR serves as bidirectional voltage-level translator and data buffer, holding intermediate states during protocol handshaking. Use Value: Enables drop-in replacement of obsolete CD4044BE without redesigning PCB layout or adding discrete level shifters.	Use Scenario: Routing multiple sensor signals through a reconfigurable test fixture where signal integrity must be preserved between measurement cycles. IC Role / Device Role / Timing Role: CD4044BPWR functions as a non-inverting sample-and-hold stage, freezing sensor readings during switch matrix reconfiguration. Use Value: Reduces measurement uncertainty by eliminating transient coupling during path switching, verified via 100 kHz settling time spec.

Industrial PLC I/O Expansion

Digital Panel Meter Interface

Use Scenario: Holding analog-to-digital converter (ADC) output values during multiplexed display scanning in a 4-channel panel meter.

IC Role / Device Role / Timing Role: CD4044BPWR acts as a synchronized hold register, capturing ADC results on gate assertion and presenting stable data to the display driver.

Use Value: Eliminates flicker and ghosting by decoupling conversion timing from display update rate, using only one CD4044BPWR for all four channels.

Use Scenario: Isolating microcontroller GPIOs from relay driver circuits in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: CD4044BPWR provides galvanically isolated latch control - microcontroller writes latch state, then disables outputs until next update cycle.

Use Value: Prevents spurious relay actuation during firmware interrupts or brown-out recovery, improving system safety compliance.

Legacy System Bus Buffering

Test Equipment Signal Routing

Use Scenario: Interfacing vintage 4000-series logic (e.g., CD4051 multiplexer) with modern 3.3 V microcontrollers in calibration equipment.

IC Role / Device Role / Timing Role: CD4044BPWR serves as bidirectional voltage-level translator and data buffer, holding intermediate states during protocol handshaking.

Use Value: Enables drop-in replacement of obsolete CD4044BE without redesigning PCB layout or adding discrete level shifters.

Use Scenario: Routing multiple sensor signals through a reconfigurable test fixture where signal integrity must be preserved between measurement cycles.

IC Role / Device Role / Timing Role: CD4044BPWR functions as a non-inverting sample-and-hold stage, freezing sensor readings during switch matrix reconfiguration.

Use Value: Reduces measurement uncertainty by eliminating transient coupling during path switching, verified via 100 kHz settling time spec.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad latch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CD4044BNSR	SOP-16 (NS) package, 2.00 mm max height, same electrical specs and pinout.	Higher profile and wider body than TSSOP - requires larger PCB footprint and may limit routing density in compact layouts.	Select when board assembly uses SOP-compatible pick-and-place tooling or when thermal mass requirements favor NS over PW.
CD4044BDWR	SOIC-16 (DW) package, 2.65 mm max height, identical logic function and timing.	0.127 mm thicker and 2.7 mm wider than CD4044BPWR - incompatible with fine-pitch TSSOP footprints and stencil apertures.	Choose for legacy rework compatibility with existing SOIC-16 land patterns or where higher mechanical robustness is prioritized over size.

Compared with CD4044BNSR and CD4044BDWR, the CD4044BPWR offers the smallest PCB area (5.0 × 4.4 mm), lowest profile (1.2 mm), and highest thermal efficiency in forced-air environments - making it optimal for space-constrained, thermally sensitive instrumentation.

Availability

CD4044BPWR is available at Aetrix Electronics and suitable for industrial automation, test and measurement equipment, and aerospace subsystems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4044BPWR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in high-reliability components.

The CD4044BPWR belongs to TI's legacy 4000-series CMOS logic family, designed for robust, low-power digital control in harsh environments where radiation tolerance, wide voltage operation, and long-term stability are critical.

FAQ

What is the maximum clock/data frequency supported by CD4044BPWR?

The CD4044BPWR is not a clocked flip-flop but a transparent latch - its speed is defined by propagation delay, not clock frequency. With 120 ns typical t_PLH/t_PHL at 10 V and 50 pF load, it supports reliable data capture up to ~4 MHz in gated-latch configurations. For CD4044BPWR, ensure setup/hold times of ≥20 ns relative to gate transitions to avoid metastability.

Can CD4044BPWR operate at 3.3 V supply voltage?

Yes, CD4044BPWR is fully specified down to 3 V supply voltage. At 3.3 V, output drive drops to ±1.2 mA, propagation delay increases to ~350 ns, and input thresholds scale accordingly (V_IL ≈ 1.1 V, V_IH ≈ 2.2 V). The CD4044BPWR remains functional and rail-compatible, though timing margins must be verified in 3.3 V designs.

Is CD4044BPWR pin-compatible with CD4043BPWR?

No. CD4044BPWR contains four 3-state latches with independent S/R/G controls, while CD4043BPWR implements four R-S latches without gate enable or 3-state outputs. Their pinouts differ: CD4044BPWR assigns pins 1–8 to S/R inputs and 9–16 to D/G, whereas CD4043BPWR uses pins 1–4 for S, 5–8 for R, and 9–12 for Q outputs - making them functionally and physically incompatible.

Does CD4044BPWR require external pull-up resistors on its outputs?

No. CD4044BPWR features true CMOS totem-pole outputs capable of driving rail-to-rail logic levels without external biasing. Pull-ups are unnecessary unless interfacing with open-drain systems or implementing wired-OR logic - in which case, CD4044BPWR's 3-state capability makes external resistors redundant for bus arbitration.

What is the moisture sensitivity level (MSL) rating for CD4044BPWR?

CD4044BPWR carries an MSL Level-1 rating per JEDEC J-STD-020, meaning it has unlimited floor life at ≤30°C/60% RH and may be reflowed at peak temperatures up to 260°C without baking. This applies to all CD4044BPWR variants (including CD4044BPWRE4 and CD4044BPWRG4) due to their Green (RoHS & no Sb/Br) construction and NiPdAu lead finish.

CD4044BPWR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 4000B

Package/Case:: 16-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: S-R Latch

Circuit:: 1:1

Output Type:: Tri-State

Voltage - Supply:: 3V ~ 18V

Independent Circuits:: 4

Delay Time - Propagation:: 50ns

Current - Output High, Low:: 6.8mA, 6.8mA

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TSSOP

CD4044BPWR FAQ

1.How can I place an order for CD4044BPWR through Aetrix?

Please submit a Request for Quotation (RFQ) for CD4044BPWR 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 CD4044BPWR reliable?

The price and inventory of CD4044BPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4044BPWR is usually 5 days.

3.What payment methods are accepted for CD4044BPWR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4044BPWR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CD4044BPWR?

CD4044BPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CD4044BPWR 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 CD4044BPWR?

For technical support, including CD4044BPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4044BPWR requirements.

6.How does Aetrix verify that CD4044BPWR is sourced from the original manufacturer or authorized distributors?

All CD4044BPWR 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 CD4044BPWR meets industry standards.

7.What is the process for return or replacement of CD4044BPWR?

All CD4044BPWR units undergo pre-shipment inspection (PSI). If there is an issue with CD4044BPWR, 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 CD4044BPWR part is unused and in its original packaging.

Return procedure for CD4044BPWR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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