NXP Semiconductors HEF4049BP,652

Overview

HEF4049BP,652 from Nexperia is a hex inverting buffer IC with overvoltage-tolerant inputs rated to 15.0 V, operating across 3.0 V–15.0 V supply range, delivering symmetrical CMOS output drive, and specified for -40 °C to +85 °C ambient operation - used for HIGH-to-LOW level shifting between LOCMOS and TTL/DTL logic families.

For engineers reviewing the HEF4049BP,652 datasheet, HEF4049BP,652 pinout, HEF4049BP,652 application, or HEF4049BP,652 equivalent, key selection factors include input overvoltage tolerance (15.0 V), guaranteed fan-out to standard TTL (2), propagation delay at 15 V (12 ns typ), static operation capability, and SO16 package compatibility with JEDEC MS-012 footprint.

Technical Context

The HEF4049BP,652 implements six independent CMOS inverter stages with fully static operation and standardized symmetrical output characteristics. Each inverter accepts inputs up to 15.0 V regardless of VDD, enabling robust level translation without external clamping.

It features input protection circuitry compliant with HBM ESD (≥2000 V) and CDM ESD (≥1000 V), operates within absolute maximum ratings of VDD = -0.5 V to +18 V and VI = -0.5 V to +18 V, and guarantees fan-out of 16 to 74L-series loads at 15 V.

Key Specifications

Pinout & Package

HEF4049BP,652 is housed in a plastic small outline package (SO16) per SOT109-1 outline: 16-pin, 3.9 mm body width, JEDEC MS-012 compliant, with gull-wing leads and pin 1 index marker.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverting buffer applications.

Compared with CD4049UBM96 and 74HC04PW,118, the HEF4049BP,652 uniquely balances 15 V input tolerance, 25 ns max propagation at 15 V, and industrial temperature range - making it the only option among the three qualified for mixed-voltage level translation in -40 °C to +85 °C environments.

Availability

HEF4049BP,652 is available at Aetrix Electronics and suitable for industrial control systems, programmable logic controllers (PLCs), and factory automation equipment requiring stable component supply across extended temperature ranges and mixed-voltage logic interfaces.

Supply support for HEF4049BP,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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable components for automotive, industrial, and consumer applications.

The HEF4049BP,652 belongs to Nexperia's legacy CMOS logic family designed specifically for robust level translation and interface bridging in industrial and mixed-voltage embedded systems.

FAQ

What is the maximum input voltage the HEF4049BP,652 can tolerate regardless of supply voltage?

The HEF4049BP,652 supports input voltages up to 15.0 V independent of VDD level, enabling safe interfacing with higher-voltage logic domains such as 12 V LOCMOS or industrial control signals while operating from a lower 5 V or 3.3 V supply. This overvoltage tolerance is verified per datasheet Section 1 and Table 4, with absolute maximum VI = +18 V under transient conditions.

Does the HEF4049BP,652 require external pull-up or pull-down resistors on its inputs or outputs?

No, the HEF4049BP,652 does not require external pull-up or pull-down resistors. Its CMOS inputs have negligible leakage current (±1.0 μA max at 15 V), and outputs provide active HIGH/LOW drive with symmetrical VOH/VOL. Unused inputs should be tied to VDD or VSS to prevent floating, but no termination resistors are needed for proper logic operation.

Can the HEF4049BP,652 drive two standard TTL loads simultaneously from a single output?

Yes, the HEF4049BP,652 is explicitly rated to drive two standard TTL loads per output, as confirmed by guaranteed fan-out values in Table 3: 2 for standard TTL at all supply voltages. At 15 V, its IOL ≥ 16.0 mA exceeds the -1.6 mA per load requirement, ensuring reliable LOW-level assertion across both loads.

What is the typical propagation delay of the HEF4049BP,652 at 15 V supply with 50 pF load?

At VDD = 15 V and CL = 50 pF, the HEF4049BP,652 exhibits typical propagation delays of tPHL = 12 ns and tPLH = 20 ns, with maximum values of 25 ns and 40 ns respectively, per Table 7. These values are derived from the extrapolation formulas provided in the datasheet and validated at Tamb = 25 °C.

Is the HEF4049BP,652 pin-compatible with other HEF4049B variants such as HEF4049BT?

Yes, the HEF4049BP,652 shares identical pin configuration (SOT109-1/SO16) and functional pinout with HEF4049BT per Figure 4 and Table 2. Both variants use the same 16-pin layout, VDD/VSS placement, and I/O assignment - enabling direct PCB substitution where package mechanical fit and thermal requirements align.