NXP Semiconductors 74HC258D,652

Overview

74HC258D,652 from NXP Semiconductors is a quad 2-input CMOS multiplexer with inverting 3-state outputs, pin-compatible with LSTTL, operating from −40 °C to +125 °C at supply voltages of 2.0–6.0 V. It selects 4-bit data from two parallel sources (I0/I1) using a common select input (S), forces outputs to high-impedance when OE is HIGH, and implements logic-equivalent 4-pole/2-position switching for bus-sharing applications.

For engineers reviewing the 74HC258D,652 datasheet, 74HC258D,652 pinout, 74HC258D,652 application, or 74HC258D,652 equivalent, key selection criteria include guaranteed 3-state output drive strength (±6 mA at VCC = 4.5 V), propagation delay ≤29 ns (VCC = 4.5 V, CL = 15 pF), JEDEC 7A compliance, ESD robustness (>2000 V HBM), and SO16 package thermal performance (500 mW max at 125 °C).

Technical Context

The 74HC258D,652 integrates four independent 2:1 multiplexers sharing one select line (S) and one output enable (OE), each producing inverted outputs (1Y–4Y). Its logic equations implement Yn = OE × (Sn × In0 + Sn̅ × In1), where inversion occurs on both data path and select complement.

It operates as a bus-interface device: inputs tolerate TTL-level thresholds (VIH = 2.4 V min at VCC = 4.5 V), outputs drive standard CMOS loads with VOL ≤0.33 V at 6 mA, and 3-state control enables bidirectional bus arbitration without external pull-ups or direction logic.

Key Specifications

Pinout & Package

74HC258D,652 uses the SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant. Thermal resistance θJA = 125 K/W enables stable operation up to 125 °C ambient.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input multiplexer applications.

Compared with 74HC258D,652, the 74HC257D,653 removes inversion overhead but adds external gate cost if complement is needed; SN74HC258DR offers identical functionality with TI-specific quality documentation and longer production commitment, making it preferable for OEMs requiring multi-source assurance.

Availability

74HC258D,652 is available at Aetrix Electronics and suitable for industrial bus multiplexing, automotive sensor data routing, legacy system interface adaptation, and digital test equipment signal switching requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC258D,652 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74HC258D,652 belongs to NXP's high-speed CMOS logic family, designed specifically for robust, low-power signal routing in electrically noisy and thermally demanding embedded systems.

FAQ

What is the maximum clock frequency supported by the 74HC258D,652 for reliable data selection?

The 74HC258D,652 does not operate on a clock signal-it is combinatorial logic. Its maximum usable data rate is determined by propagation delay: at VCC = 4.5 V and CL = 15 pF, tpd ≤29 ns supports clean switching of data edges up to ~17 MHz (1/(2 × tpd)). For synchronous systems, ensure setup/hold times relative to control signals (S, OE) are met per Table 3's function table.

Does the 74HC258D,652 require external pull-up or pull-down resistors on its inputs?

No. The 74HC258D,652 has CMOS inputs with negligible leakage (±1.0 µA max at 125 °C), so inputs must be actively driven to defined logic levels. Floating inputs are prohibited-unconnected S, OE, or data pins will cause unpredictable output states and increased ICC due to input stage oscillation. Always tie unused inputs to VCC or GND via PCB traces.

How does the 3-state output behavior of the 74HC258D,652 interact with bus contention in shared-data applications?

When OE is HIGH, all outputs (1Y–4Y) enter high-impedance (Z) state, electrically disconnecting the device from the bus. This prevents contention with other drivers (e.g., microcontroller ports or other multiplexers). To avoid bus glitches, OE must be asserted (LOW) only after S has stabilized, and deasserted only after data transitions have settled-verified using timing waveforms in Figure 7 of the datasheet.

Can the 74HC258D,652 operate reliably at 3.3 V supply voltage?

Yes. The 74HC258D,652 is fully specified from VCC = 2.0 V to 6.0 V. At 3.3 V, VIH = 2.31 V (70% of VCC) and VIL = 0.99 V (30% of VCC) provide >0.8 V noise margin. Propagation delay increases to ~35 ns (vs. 29 ns at 4.5 V), and output drive reduces to ±4 mA, which remains sufficient for driving 15 pF loads or 5 LS-TTL inputs.

What is the thermal derating behavior of the 74HC258D,652 in the SO16 package above 70 °C?

Per Table 4, the SO16 package has linear thermal derating of 8 mW/K above 70 °C. At 125 °C ambient, Ptot = 500 mW − (125 − 70) × 8 = 500 − 440 = 60 mW. Designers must limit internal power dissipation (ICC × VCC + ∑(IO² × RDSon)) to ≤60 mW at max ambient to avoid exceeding junction temperature limits.