Nexperia USA Inc. 74HC175D,653

Overview

74HC175D,653 from Nexperia is a quad positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), 16-pin SO16 package, CMOS-level inputs, and complementary Q/Q̅ outputs per stage. It operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and delivers 35 ns typical propagation delay at VCC = 6.0 V - used in synchronous data latching, register banks, and clock-domain synchronization in industrial control logic.

For engineers reviewing the 74HC175D,653 datasheet, 74HC175D,653 pinout, 74HC175D,653 application, or 74HC175D,653 equivalent, key selection criteria include edge-trigger timing margin (tsu = 14 ns, th = 4 ns @ VCC = 6.0 V), MR assertion behavior (asynchronous LOW-active reset), output drive capability (±25 mA), and compatibility with 5 V TTL logic via 74HCT175 variants.

Technical Context

This device implements four independent D-type storage elements sharing one clock (CP) and one master reset (MR) input. Each flip-flop samples its Dn input on the LOW-to-HIGH transition of CP and updates Qn/Qn outputs synchronously, while MR forces all Qn to LOW asynchronously regardless of clock state.

Input clamping diodes enable safe interfacing to voltages exceeding VCC when current-limiting resistors are used. The design complies with JEDEC standard no. 7A and supports dual supply-voltage operation: 74HC175 for CMOS-level inputs (VIH ≥ 3.15 V @ VCC = 4.5 V), and 74HCT175 for TTL-compatible inputs (VIH ≥ 2.0 V @ VCC = 4.5–5.5 V).

Key Specifications

Pinout & Package

74HC175D,653 uses the SOT109-1 (SO16) plastic small outline package: 16 leads, 3.9 mm body width, 1.27 mm lead pitch, gull-wing terminations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC175D,653, the 74HCT175D,653 offers lower input threshold compatibility at the cost of slightly higher ICC, while SN74HC175N retains identical logic behavior but trades surface-mount efficiency for manual assembly flexibility.

Availability

74HC175D,653 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 74HC175D,653 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 delivering high-performance, reliable logic, analog, and discrete components optimized for efficiency and robustness in demanding applications.

The 74HC/HCT logic family targets cost-sensitive, high-reliability digital systems requiring wide supply range, strong noise immunity, and JEDEC-standard compatibility - especially in industrial, automotive, and consumer infrastructure.

FAQ

What is the maximum clock frequency supported by 74HC175D,653?

The 74HC175D,653 achieves a maximum clock frequency (fmax) of 89 MHz at VCC = 6.0 V and CL = 50 pF, dropping to 24 MHz at VCC = 4.5 V and -40 °C to +125 °C operation. This is determined by propagation delay (tpd ≤ 30 ns @ VCC = 6.0 V) and input transition rate limits (Δt/ΔV ≥ 83 ns/V). System-level fmax depends on load capacitance and PCB routing.

Can 74HC175D,653 be used with 3.3 V microcontroller GPIOs?

Yes - at VCC = 3.3 V, the 74HC175D,653 maintains VIH(min) = 2.1 V and VIL(max) = 1.35 V, fully compatible with 3.3 V CMOS logic levels. Output VOH(min) = 2.97 V and VOL(max) = 0.26 V at IO = ±4 mA ensure noise margins > 0.3 V. No level-shifting circuitry is required for bidirectional interfacing.

How does the master reset (MR) behave during power-up?

The MR input is active-LOW and asynchronous: asserting MR LOW forces all Qn outputs LOW immediately, regardless of CP state or power-rail stability. For reliable power-on reset, MR must be held LOW until VCC reaches minimum operating voltage (2.0 V) and stabilized, then released. An RC network or dedicated supervisor IC is recommended to meet this timing.

Is there a pin-compatible 74HC175 variant with wider temperature range?

No - the 74HC175D,653 (SOT109-1) is rated for -40 °C to +125 °C, matching the widest industrial grade offered in this family. Alternative packages like TSSOP16 (74HC175PW) share identical temperature specs but differ in thermal resistance and board area. No military- or extended-temperature (-55 °C to +150 °C) version exists in the 74HC175 product line.