Nexperia USA Inc. 74HC4094D/C4J

Overview

74HC4094D/C4J from Nexperia is an 8-stage static shift register with 3-state output registers, operating at 2V–6V supply, featuring 15 ns propagation delay at 4.5V and ±5.2 mA output drive. It functions as a serial-to-parallel data converter in LED matrix drivers and I/O expanders for microcontroller interfaces.

For engineers reviewing the 74HC4094D/C4J datasheet, 74HC4094D/C4J pinout, 74HC4094D/C4J application, or 74HC4094D/C4J equivalent, key selection criteria include serial clock tolerance, storage register hold time, output enable timing, and compatibility with 3.3V/5V mixed-signal systems.

Technical Context

This device integrates two cascaded 8-bit registers: a shift register accepting serial data (DS) synchronized to rising-edge clock (SHCP), and a storage latch (STCP) that transfers shifted data to outputs simultaneously. The OE pin enables/disables all Q0–Q7 outputs in high-impedance state.

It uses silicon-gate CMOS technology for low dynamic power consumption and rail-to-rail output swing. Input thresholds are TTL-compatible, allowing direct interfacing with 5V logic while operating down to 2V.

Key Specifications

Pinout & Package

Supplied in SO16 (Small Outline 16-pin) package with 1.27 mm pitch, JEDEC MS-012AC compliant, body width 3.9 mm, lead finish matte tin.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial-in/parallel-out shift register applications.

Compared with SN74HC595DR and 74HCT4094D, the 74HC4094D/C4J offers integrated daisy-chaining and wider supply range, making it optimal for compact, scalable 2.0–6.0 V designs where pin count and layout simplicity are constrained.

Availability

74HC4094D/C4J is available at Aetrix Electronics and suitable for LED display modules, industrial HMI panels, automotive interior lighting control, and sensor node I/O expansion requiring stable component supply across extended temperature ranges.

Supply support for 74HC4094D/C4J 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 high-volume, high-reliability standard logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HC4094D/C4J belongs to Nexperia's 74HC high-speed CMOS logic family, designed specifically for low-power, noise-immune serial interface expansion in space-constrained embedded systems.

FAQ

What is the maximum clock frequency supported by 74HC4094D/C4J?

The device supports a maximum SHCP clock frequency of 30 MHz at VCC = 4.5 V, derived from its 15 ns typical propagation delay and setup/hold timing margins. At 6.0 V, maximum frequency increases to 45 MHz; at 2.0 V, it drops to 12 MHz. System-level timing must account for STCP-to-output delay (tPLH/tPHL ≤ 20 ns) when synchronizing parallel updates.

Can 74HC4094D/C4J drive LEDs directly without current-limiting resistors?

No. While the outputs source/sink up to ±5.2 mA per pin at VCC = 4.5 V, sustained LED current must be limited externally to prevent exceeding absolute maximum ratings (Io = ±25 mA per output, ±50 mA total package). A series resistor is required to set forward current below 5 mA per LED for reliable long-term operation.

How does the storage register prevent output glitches during serial loading?

The storage register isolates outputs from the shift register: data shifts serially into the shift register on SHCP edges, then transfers atomically to outputs on the rising edge of STCP. This separation ensures Q0–Q7 remain stable during serial loading and change only at precisely timed STCP transitions, eliminating partial updates or transient states.

Is 74HC4094D/C4J compatible with 3.3V microcontrollers driving its inputs?

Yes. With VIH(min) = 1.8 V at VCC = 2 V and VIH(min) = 3.15 V at VCC = 4.5 V, the part accepts 3.3V logic-high signals across its full 2–6 V supply range. Inputs are TTL-compatible, so standard 3.3V CMOS outputs meet threshold requirements without pull-ups or level shifters.