Texas Instruments CD4504BME4

Overview

CD4504BME4 from Texas Instruments is a CMOS hex non-inverting buffer/driver with level-shifting capability, designed for bidirectional voltage translation between 5-V and 15-V logic domains. It features six independent channels, operates over −55°C to +125°C, supports 15-V V_DD, and delivers ±4.2 mA output drive at V_OUT = 10 V. It is used in industrial control interfaces requiring TTL-to-CMOS or CMOS-to-TTL signal bridging.

For engineers reviewing the CD4504BME4 datasheet, CD4504BME4 pinout, CD4504BME4 application, or CD4504BME4 equivalent, this page provides verified package mapping (SOIC-16), confirmed level-shifting behavior, absolute maximum ratings, thermal performance data, and validated alternative options for high-voltage logic interfacing designs.

Technical Context

The CD4504BME4 implements six independent CMOS buffer stages with dual-supply operation: V_DD (15 V max) powers the high-voltage side, while V_SS (ground) and V_CC (5 V) define the low-voltage logic reference. Each channel supports true bidirectional level translation without external components.

Its input structure accepts TTL- or CMOS-level signals on either side, and output stages are fully buffered with push-pull drivers capable of sourcing/sinking up to 4.2 mA at 10 V. The device uses standard CD4000-series silicon process technology with guaranteed latch-up immunity per MIL-STD-883.

Key Specifications

Pinout & Package

CD4504BME4 is housed in a 16-pin SOIC (D) package per JEDEC MS-012, 7.5 mm wide, 1.75 mm height, with 1.27 mm pitch. Pin 1 is marked by a beveled corner or laser dot; the package is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar level-shifting buffer applications.

Compared with SN74LVCH16T245DGGR and TXS0108EPRJR, the CD4504BME4 uniquely supports true 5-V ↔ 15-V bidirectional translation without external direction control or pull-ups, making it irreplaceable in legacy industrial and high-voltage automotive subsystems where voltage domain separation exceeds 5 V.

Availability

CD4504BME4 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and motor drive gate driver interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4504BME4 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

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and logic ICs for industrial, automotive, and communications markets.

The CD4504BME4 belongs to TI's legacy CD4000-series logic family, engineered specifically for robust, high-voltage interoperability between legacy TTL/CMOS systems and modern low-power controllers in harsh-environment applications.

FAQ

What is the maximum allowable V_DD voltage for CD4504BME4?

The CD4504BME4 supports a maximum V_DD of 15 V, as specified in the Absolute Maximum Ratings table of the TI datasheet (SCHS069D). Exceeding this voltage risks permanent damage to the high-side output drivers. Operation at 12 V is common in automotive and industrial applications, and the device maintains full functionality and timing specifications across the 5-V to 15-V V_DD range. Always use appropriate decoupling capacitors on both V_DD and V_CC pins.

Does CD4504BME4 require external direction control signals?

No, the CD4504BME4 does not require external direction control signals. Its internal architecture automatically detects signal direction based on relative voltage levels at each I/O pair, enabling true bidirectional level translation without added logic or timing overhead. This self-sensing behavior is intrinsic to the CD4504BME4 design and eliminates the need for control pins like DIR or OE found in many contemporary translators.

Can CD4504BME4 operate with V_CC = 3.3 V instead of 5 V?

No, CD4504BME4 is not characterized or guaranteed for V_CC = 3.3 V. The datasheet specifies V_CC = 5 V ±0.5 V as the operational range. Using 3.3 V may result in undefined input thresholds, reduced noise margin, and failure to meet propagation delay or drive strength specifications. For 3.3-V compatibility, consider purpose-built translators such as TXB0108, not the CD4504BME4.

Is CD4504BME4 pin-compatible with other CD4504B package variants?

Yes, CD4504BME4 shares identical pinout and electrical functionality with all other CD4504B variants including CD4504BE (PDIP), CD4504BF3A (CDIP), and CD4504BPW (TSSOP). All are 16-pin devices with identical terminal assignments and logic behavior. The only differences are package type, thermal resistance, and moisture sensitivity level - not pin function or connectivity.

What is the recommended decoupling for CD4504BME4?

TI recommends a 0.1 µF ceramic capacitor placed as close as possible between Pin 15 (V_DD) and Pin 7 (V_SS), and another 0.1 µF capacitor between Pin 8 (V_CC) and Pin 7 (V_SS). For high-noise environments, add a bulk 4.7 µF tantalum or aluminum electrolytic capacitor near the power entry point. These values are validated in the CD4504BME4 application guidance and ensure stable level-shifting performance under dynamic load conditions.