Texas Instruments CD40174BPWRE4

Overview

CD40174BPWRE4 from Texas Instruments is a hex D-type flip-flop IC with common clock and reset, implemented in CMOS technology for low-power operation. It features 6 independent edge-triggered D flip-flops, 16-pin TSSOP package, ±0.5V input threshold (V_DD/2), -55°C to +125°C operating temperature range, and 100% tested DC parameters. It is used in digital logic sequencing, register storage, and synchronous control circuits.

For engineers reviewing the CD40174BPWRE4 datasheet, CD40174BPWRE4 pinout, CD40174BPWRE4 application, or CD40174BPWRE4 equivalent, key selection considerations include its single-rail 3–18 V supply compatibility, asynchronous master reset, propagation delay of 120 ns at 5 V, and TSSOP-16 thermal and board-space advantages over PDIP alternatives.

Technical Context

The CD40174BPWRE4 implements six identical D-type flip-flops sharing one common clock (CP) and one common asynchronous reset (/MR) input. Each stage operates on the rising edge of CP, with data latched from D_n to Q_n only when /MR is high.

Its CMOS design ensures rail-to-rail input voltage tolerance, static operation down to 0 Hz, and noise immunity via hysteresis on control inputs. The device supports direct interfacing with TTL, CMOS, and high-impedance logic families across its full 3–18 V supply range.

Key Specifications

Pinout & Package

TSSOP-16 (PW) package: 4.4 mm × 5.0 mm body, 1.2 mm max height, 0.65 mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex D-type flip-flop applications.

Compared with CD40174BE and MC140174BDR2G, the CD40174BPWRE4 offers superior board density and thermal performance in automated SMT lines, while maintaining full functional and timing equivalence-making it optimal for new high-volume industrial designs.

Availability

CD40174BPWRE4 is available at Aetrix Electronics and suitable for industrial control sequencing, LED display scanning, and test equipment pattern generation requiring stable component supply and long-term lifecycle support.

Supply support for CD40174BPWRE4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial and automotive qualification.

The CD40174BPWRE4 belongs to TI's legacy CMOS Logic family, designed for robust, low-power digital register functions in harsh-environment applications where reliability and wide voltage tolerance are critical.

FAQ

What is the maximum clock frequency supported by the CD40174BPWRE4?

The CD40174BPWRE4 does not specify a maximum clock frequency in its datasheet, but its propagation delay is 120 ns (max) at V_DD = 5 V. This implies a practical upper limit near 4 MHz for reliable setup/hold timing. At V_DD = 15 V, delay drops to 50 ns, supporting ~10 MHz operation. System-level timing margins must account for PCB trace delays and fan-out loading. The CD40174BPWRE4 remains fully functional at DC (0 Hz), enabling use in static register applications.

Is the CD40174BPWRE4 pin-compatible with the CD40174BE?

Yes-the CD40174BPWRE4 and CD40174BE share identical pin functions and logic behavior. However, they differ in package: CD40174BPWRE4 uses TSSOP-16 (0.65 mm pitch), while CD40174BE uses PDIP-16 (2.54 mm pitch). No electrical or functional incompatibility exists, but PCB layout and assembly processes differ significantly. The CD40174BPWRE4 cannot be mounted on a PDIP footprint without an adapter.

Does the CD40174BPWRE4 have Schmitt-trigger inputs?

Only the clock (CP) and master reset (/MR) inputs of the CD40174BPWRE4 feature built-in Schmitt-trigger action, providing hysteresis for noise rejection on these critical control lines. The six D inputs are standard CMOS inputs without hysteresis. This design ensures robust clock edge detection while preserving direct logic-level compatibility for data inputs. The CD40174BPWRE4 datasheet confirms this distinction in the "Electrical Characteristics" and "Functional Diagram" sections.

Can the CD40174BPWRE4 operate from a 3.3 V supply?

Yes-the CD40174BPWRE4 is fully specified for operation from 3 V to 18 V, including 3.3 V nominal systems. At 3.3 V, propagation delay increases to 220 ns (max), and output drive strength reduces to ±1.5 mA, but all DC parameters-including input thresholds, noise margins, and logic levels-remain valid. The CD40174BPWRE4 is commonly used in mixed-voltage systems interfacing with 3.3 V microcontrollers and 5 V peripherals.

What is the meaning of the "E4" suffix in CD40174BPWRE4?

The "E4" suffix in CD40174BPWRE4 denotes Texas Instruments' tape-and-reel packaging standard compliant with JEDEC J-STD-020 and RoHS requirements. It indicates the device is supplied in 90-piece tubes (not reels), with NiPdAu lead finish, MSL Level-1 rating, and full traceability. This suffix distinguishes it from bulk-packed or non-RoHS variants and confirms compliance with TI's current manufacturing and environmental specifications for the CD40174BPWRE4.