NXP Semiconductors 74LVCH162374ADGG:1

Overview

74LVCH162374ADGG from Nexperia is a 16-bit edge-triggered D-type flip-flop with dual 8-bit sections, 30 Ω integrated series output termination resistors, 5 V input/output tolerance, and 3-state outputs for bus interfacing. It operates from 1.2 V to 3.6 V supply, supports -40 °C to +125 °C ambient, and features bus hold on all data inputs - enabling robust operation in mixed-voltage 3.3 V/5 V systems such as industrial backplanes and memory interface buffers.

For engineers reviewing the 74LVCH162374ADGG datasheet, 74LVCH162374ADGG pinout, 74LVCH162374ADGG application, or 74LVCH162374ADGG equivalent, key selection criteria include its 30 Ω on-die termination (reducing external component count), guaranteed 120 MHz max clock frequency at 3.3 V, 1.5 ns minimum pulse width, and dual independent OE/CP control per octal section for flexible bus arbitration.

Technical Context

This device implements two independent 8-bit D-type flip-flop banks, each with dedicated clock (CP) and output enable (OE) inputs. Data is latched on the LOW-to-HIGH transition of CP, while OE controls high-impedance state without affecting internal register contents. Bus hold circuitry maintains valid logic levels on unused data inputs, eliminating external pull-ups.

Dynamic performance is defined by propagation delay (tpd ≤ 6.8 ns at VCC = 3.3 V), set-up time (tsu ≥ 1.9 ns), hold time (th ≥ 1.5 ns), and output skew (tsk(o) ≤ 1.5 ns). The 30 Ω series termination applies to both HIGH and LOW output stages, directly damping signal reflections on PCB traces driving 50 Ω transmission lines.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), plastic thin shrink small outline, 48 leads, body width 6.1 mm, 0.5 mm pitch, 12.4 mm × 6.2 mm footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bus-interface flip-flop applications.

Compared with SN74LVC16374ADGGR and 74ALVCH162374T, the 74LVCH162374ADGG uniquely balances wide voltage operation (1.2 V), integrated termination, and automotive-grade temperature range - making it optimal for cost-sensitive, mixed-voltage industrial controllers requiring minimal external components.

Availability

74LVCH162374ADGG is available at Aetrix Electronics and suitable for industrial backplane interfaces, automotive powertrain ECUs, memory expansion buffers, and test equipment digital I/O modules requiring stable component supply across extended temperature ranges.

Supply support for 74LVCH162374ADGG 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 MOSFET solutions optimized for efficiency, miniaturization, and robustness in mass-market electronics.

The 74LVCH162374ADGG belongs to Nexperia's LVCH family of advanced CMOS bus-interface devices, designed specifically for low-power, mixed-voltage system interconnects requiring ESD resilience, precise timing control, and reduced external component count.

FAQ

What is the minimum supply voltage required for reliable operation of the 74LVCH162374ADGG?

The 74LVCH162374ADGG is fully specified down to 1.2 V supply voltage, with functional operation guaranteed across 1.2 V to 3.6 V. At 1.2 V, static parameters including VIH (1.08 V min) and VOL (0.12 V max) remain valid, and dynamic characteristics such as tpd (14 ns max) and fmax (100 MHz min) are maintained within -40 °C to +85 °C ambient. This enables use in ultra-low-power battery-backed systems where other 3.3 V logic families would fail.

Does the 74LVCH162374ADGG require external pull-up or pull-down resistors on its data inputs?

No, the 74LVCH162374ADGG does not require external pull-up or pull-down resistors on its data inputs because all 16 D-inputs feature integrated bus hold circuitry. Each data input maintains a valid logic state (IBHL = +75 μA or IBHH = -75 μA at VCC = 3.0 V) when left floating, preventing undefined behavior during power-up, hot-swap events, or unconnected test points - a key advantage over standard LVC-family devices like the SN74LVC16374ADGGR.

How does the 30 Ω series termination in the 74LVCH162374ADGG improve signal integrity compared to non-terminated equivalents?

The 30 Ω series termination in the 74LVCH162374ADGG damps signal reflections on PCB traces by matching typical FR-4 characteristic impedances (45–55 Ω) when combined with load capacitance and trace geometry. This reduces overshoot, undershoot, and ringing - improving eye diagram margins by up to 35 % versus non-terminated alternatives. Measured tsk(o) ≤ 1.5 ns confirms tight output skew, essential for parallel bus timing closure in high-speed memory interfaces.

Can the 74LVCH162374ADGG safely interface with 5 V TTL logic while powered from a 2.5 V supply?

Yes, the 74LVCH162374ADGG supports 5 V tolerant inputs and outputs regardless of VCC level (1.2 V to 3.6 V). When powered from 2.5 V, its inputs accept 0 V to 5.5 V signals, and outputs drive to VOH ≥ 1.7 V (at IO = -4 mA) and VOL ≤ 0.6 V (at IO = 4 mA) - meeting TTL input thresholds. This allows direct connection to legacy 5 V microcontrollers or peripheral ICs without level translators, simplifying mixed-voltage system design.

What is the thermal derating behavior of the 74LVCH162374ADGG in the TSSOP48 package above 109 °C?

For the 74LVCH162374ADGG in SOT362-1 (TSSOP48), total power dissipation (Ptot) derates linearly at 12.2 mW/K above 109 °C. At +125 °C ambient, Ptot is reduced from 500 mW (maximum at ≤109 °C) to 500 mW − (12.2 mW/K × 16 K) = 305 mW. This derating ensures safe junction temperature operation under sustained high-load conditions in automotive and industrial environments where ambient exceeds 100 °C.