Texas Instruments CD40174BPWRG4

Overview

CD40174BPWRG4 from Texas Instruments is a hex D-type flip-flop IC in a 16-pin TSSOP package, operating over -55°C to +125°C, with supply voltage range 3V–18V, static operation, and CMOS logic compatibility. It serves as a synchronous data latch in digital control, timing, and register applications.

For engineers reviewing the CD40174BPWRG4 datasheet, CD40174BPWRG4 pinout, CD40174BPWRG4 application, or CD40174BPWRG4 equivalent, key selection criteria include its wide V_DD range, low quiescent current, TTL/CMOS interface capability, and industrial temperature rating - critical for legacy-compatible logic design and power-flexible embedded systems.

Technical Context

The CD40174BPWRG4 integrates six independent D-type flip-flops with common clock and master reset inputs, enabling parallel data capture on rising clock edges. Its CMOS architecture ensures high noise immunity and rail-to-rail output swing across the full 3V–18V supply range.

All outputs are buffered and fully compatible with TTL, MOS, and other CMOS devices. The device supports static operation (no minimum clock frequency), making it suitable for both high-speed sequencing and low-power latching functions without timing constraints.

Key Specifications

Pinout & Package

CD40174BPWRG4 is housed in a 16-lead thin shrink small-outline package (TSSOP-PW), 4.4 mm × 5.0 mm footprint, 1.2 mm max height, with 0.65 mm lead pitch and exposed pad not present. Pin 1 is located at the top-left corner with index marking.

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 CD40174BPWRG4 uniquely combines surface-mount compactness, full industrial temperature range, and 18V absolute maximum supply - making it optimal for space-constrained, high-reliability embedded controllers.

Availability

CD40174BPWRG4 is available at Aetrix Electronics and suitable for industrial control logic, digital instrumentation interfaces, and legacy system upgrades requiring stable component supply and long-term lifecycle support.

Supply support for CD40174BPWRG4 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 decades of CMOS logic heritage and broad industrial qualification.

The CD40174BPWRG4 belongs to TI's CD4000B-series CMOS logic family, designed for robust, wide-supply-range digital building blocks in automotive, industrial, and aerospace applications where reliability and longevity are essential.

FAQ

What is the maximum clock frequency supported by the CD40174BPWRG4?

The CD40174BPWRG4 does not specify a maximum clock frequency in its datasheet because it supports static operation - meaning it functions correctly at DC (0 Hz) up to a practical limit determined by propagation delay and load capacitance. At V_DD = 15V and C_L = 50 pF, typical f_MAX exceeds 5 MHz. For CD40174BPWRG4 designs targeting >1 MHz, ensure proper PCB layout and decoupling to maintain signal integrity.

Is the CD40174BPWRG4 pin-compatible with the 74LS174?

No, the CD40174BPWRG4 is not pin-compatible with the 74LS174. While both are hex D-type flip-flops, the CD40174BPWRG4 uses a different pin assignment: MR is on pin 13, CLK on pin 15, and V_SS on pin 16, whereas the 74LS174 places CLK on pin 3 and MR on pin 4. Direct replacement requires board redesign. However, the CD40174BPWRG4 provides functional equivalence with enhanced voltage range and lower power.

Does the CD40174BPWRG4 have Schmitt-trigger inputs?

No, the CD40174BPWRG4 does not feature Schmitt-trigger inputs. Its input thresholds are standard CMOS levels (V_IL ≤ 0.3×V_DD, V_IH ≥ 0.7×V_DD) with no hysteresis. For noisy signal sources, external RC filtering or a dedicated Schmitt-trigger buffer (e.g., CD40106B) should precede CD40174BPWRG4 inputs to prevent false triggering.

Can the CD40174BPWRG4 operate from a 3.3V supply?

Yes, the CD40174BPWRG4 is fully specified to operate from 3V to 18V, including 3.3V nominal supplies. At V_DD = 3.3V, output high-level voltage (V_OH) is typically ≥ 3.1V, and input high threshold (V_IH) is ≥ 2.3V - ensuring reliable interfacing with 3.3V logic families. Ensure adequate decoupling and verify timing margins for your specific load.

What is the purpose of the master reset (MR) pin on the CD40174BPWRG4?

The MR (Master Reset) pin on the CD40174BPWRG4 is an active-high asynchronous input that forces all six Q outputs low immediately, independent of the clock signal. This allows immediate, deterministic clearing of the register state - useful during system initialization, fault recovery, or mode switching. The MR pin remains effective across the full supply and temperature range of the CD40174BPWRG4.