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Analog Devices Inc./Maxim Integrated MAX6958BAPE+
- Part No.:
- MAX6958BAPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Display Drivers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX6958BAPE+.pdf
- Description:
- IC DRVR 7 SEGMENT 4 DIGIT 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,701
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Product details
Overview
MAX6958BAPE+ from Maxim Integrated is a 16-pin PDIP-packaged, SMBus/I²C-compatible 4-digit common-cathode LED display driver with 9-segment per-digit capability, 23mA constant-current segment sourcing, 64-step digital brightness control, and 400kbps serial interface - used in automotive panel meters and industrial control front panels requiring robust -40°C to +125°C operation.
For engineers reviewing the MAX6958BAPE+ datasheet, MAX6958BAPE+ pinout, MAX6958BAPE+ application, or MAX6958BAPE+ equivalent, this page delivers verified electrical specs, validated pin functions, confirmed automotive-grade thermal performance, and real-world design context for LED digit driving and discrete LED control in noise-sensitive embedded systems.
Technical Context
The MAX6958BAPE+ implements a fixed-architecture multiplexed LED driver with internal hexadecimal font decode, static RAM digit storage, and slew-rate-limited segment drivers to suppress EMI. It operates exclusively as a slave on a 2-wire bus with hardwired 0111001 slave address (A0 = V+), supporting only write/read register access via command-byte addressing.
All digit and segment outputs are sourced from internal current-regulated drivers; DIG0–DIG3 sink cathode current while SEG0–SEG8 source anode current. The device lacks keyscan inputs and IRQ functionality - distinguishing it from the MAX6959 - and its SEG9 pin is dedicated to segment output only, not interrupt or logic output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3V to 5.5V - supports direct connection to 3.3V or 5V system rails without level-shifting. |
| Segment Drive Current | 23mA typical peak - ensures bright, consistent illumination of standard common-cathode 7-segment LEDs at full intensity. |
| Brightness Control | 64-step digital adjustment - enables precise luminance tuning across temperature and LED batch variations. |
| Serial Interface Speed | 400kbps I²C/SMBus - allows rapid digit updates in real-time HMI applications without bus contention. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive and industrial control environments. |
| Scan Rate | 510Hz to 1050Hz - eliminates visible flicker while maintaining low average power consumption. |
| Shutdown Current | 20µA - preserves system battery life during idle or sleep modes with display retained in memory. |
Pinout & Package
MAX6958BAPE+ is housed in a 16-pin plastic DIP (P16-1) package with through-hole mounting and 0.3" wide body. Pin 1 is SDA; pin 2 is SCL; pins 4–7 and 11–15 serve dual-function DIG/SEG outputs; pin 8 is GND; pin 16 is V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | Serial Data I/O | Open-drain bidirectional bus line - requires external 4.7kΩ pullup to V+ for I²C/SMBus compliance. |
| 2 (SCL) | Serial Clock Input | CMOS input with 0.8V/2.1V thresholds - compatible with 2.5V/3.3V masters even when V+ = 5V. |
| 3 (SEG9) | Segment Output | Dedicated 9th segment driver sourcing up to 23mA - enables extended alphanumeric or symbol display capability. |
| 4–7, 11–15 (DIG0/SEG0–DIG3/SEG3) | Dual-Function Digit/Segment Driver | Sinks cathode current (DIG mode) or sources anode current (SEG mode) - supports flexible wiring of single/dual-digit displays. |
| 8 (GND) | Ground Reference | Primary return path for all segment and digit currents - must be low-impedance to minimize voltage drop and EMI. |
| 9, 10 (N.C.) | No Connect | Internally unconnected - may be tied to V+ or left floating per layout requirements. |
| 16 (V+) | Positive Supply | Power input for logic and analog circuitry - decoupling capacitor (0.1µF) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Hexadecimal decode/no-decode selection | Per-digit configuration enables mixed numeric/alphanumeric displays without MCU-side font mapping overhead. |
| Slew-rate-limited segment drivers | 11mA/µs dI/dt limits EMI emissions - meets CISPR-25 Class 5 requirements in automotive PCB layouts. |
| Static RAM digit storage | Retains displayed content during shutdown - eliminates need for host MCU to refresh display on wake-up. |
| Scan-limit register (1–4 digits) | Reduces average segment current and power dissipation - extends LED lifetime and simplifies thermal design. |
| Test mode (all segments on) | Hardware-level diagnostic function - verifies LED continuity and driver functionality without firmware intervention. |
Applications
| Automotive Instrument Clusters | Industrial Panel Meters |
|---|---|
|
Use Scenario: Driving 4-digit LED speedometer or fuel-level readout in vehicle dashboards exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Primary display controller handling multiplexed digit scanning, brightness regulation, and I²C command parsing. Use Value: Guaranteed -40°C to +125°C operation and 23mA drive strength ensure legible, flicker-free display under extreme thermal cycling. |
Use Scenario: Displaying pressure, temperature, or flow rate on factory-floor instrumentation with high ambient EMI. IC Role / Device Role / Timing Role: Standalone LED driver offloading display management from main MCU to reduce firmware complexity. Use Value: Slew-rate-limited outputs and 400kbps I²C interface enable reliable communication in electrically noisy plant environments. |
| White Goods Control Panels | Audio/Video Equipment Displays |
|
Use Scenario: Controlling 4-digit time, cycle, or temperature readouts on washing machines and ovens with long product lifecycles. IC Role / Device Role / Timing Role: Low-power display manager maintaining visibility during standby with 20µA shutdown current. Use Value: Internal 64-step brightness control compensates for LED aging over 10+ years of operation. |
Use Scenario: Rendering channel numbers, volume, or input status on AV receivers and amplifiers with compact front-panel space. IC Role / Device Role / Timing Role: Compact 16-pin DIP solution minimizing PCB footprint while supporting 9-segment alphanumeric glyphs. Use Value: Hexadecimal decode mode reduces host processor load for common numeric display tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED display driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6958AAPE+ | Same functionality and pinout; differs only in slave address (0111000 vs. 0111001) - enables dual-device bus sharing. | Used where two MAX6958 devices share one I²C bus without address conflict. | Select MAX6958AAPE+ when bus topology requires two display drivers on same 2-wire network. |
| MAX6959BAPE+ | Includes INPUT1/INPUT2 keyscan ports and configurable IRQ/SEG9 pin - adds 8-key matrix support absent in MAX6958BAPE+. | Required for HMI designs integrating pushbutton input alongside LED display. | Choose MAX6959BAPE+ only if keyscan functionality is needed; otherwise MAX6958BAPE+ offers lower cost and simpler layout. |
Compared with MAX6958AAPE+, MAX6958BAPE+ provides identical LED driving capability but enables distinct I²C addressing; compared with MAX6959BAPE+, it omits keyscan hardware, reducing BOM count and eliminating unused input leakage paths in pure-display applications.
Availability
MAX6958BAPE+ is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial panel meters, white goods control panels, and audio/video equipment displays requiring stable component supply across extended temperature ranges.
Supply support for MAX6958BAPE+ 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6958BAPE+ belongs to Maxim's LED display driver product line, engineered specifically for reliable, low-software-overhead interfacing of microcontrollers to multiplexed common-cathode LED displays in harsh thermal environments.
FAQ
What is the slave address of the MAX6958BAPE+?
The MAX6958BAPE+ has a fixed 7-bit slave address of 0111001 (0x39 in hex), determined by internal hardwiring of A0 to V+. This allows coexistence with MAX6958AAPE+ (0111000) on the same I²C bus. The MAX6958BAPE+ responds only to this address and ignores all other addresses. No external configuration is required to set or change the address of the MAX6958BAPE+.
Does the MAX6958BAPE+ support key scanning like the MAX6959?
No, the MAX6958BAPE+ does not include key-scan functionality. Unlike the MAX6959, it lacks INPUT1 and INPUT2 pins and cannot debounce or monitor mechanical switches. Its pin 3 is dedicated SEG9 output only, not configurable as IRQ. The MAX6958BAPE+ is strictly a display driver - any input handling must be implemented externally. This functional distinction is confirmed in the official datasheet's "Differences Between MAX6958 and MAX6959" section.
What is the maximum number of LEDs the MAX6958BAPE+ can drive?
The MAX6958BAPE+ can drive up to four 7-segment digits (each with decimal point) plus four discrete LEDs, or four 7-segment digits plus eight discrete LEDs if decimal points are unused, or up to 36 discrete LEDs in full segment-control mode. All configurations rely on the same 13 output pins (DIG0–DIG3, SEG0–SEG9), with current limited to 23mA per segment. The actual count depends on wiring topology and whether shared cathodes/anodes are used.
Can the MAX6958BAPE+ operate from a 3.3V supply?
Yes, the MAX6958BAPE+ operates from 3V to 5.5V, making it fully compatible with 3.3V systems. Its SDA and SCL inputs use fixed 0.8V/2.1V logic thresholds, ensuring reliable recognition of 3.3V logic levels even when V+ = 5V. No level shifters are needed between a 3.3V microcontroller and the MAX6958BAPE+ - the interface remains SMBus/I²C compliant across the entire supply range.
Is the MAX6958BAPE+ pin-compatible with the MAX6959BAPE+?
No, the MAX6958BAPE+ is not pin-compatible with the MAX6959BAPE+. While both use the same 16-pin PDIP package, pins 9 and 10 are No Connect (N.C.) on the MAX6958BAPE+, whereas they are functional INPUT1 and INPUT2 on the MAX6959BAPE+. Additionally, pin 3 is fixed SEG9 on MAX6958BAPE+, but configurable IRQ/SEG9 on MAX6959BAPE+. Swapping them requires PCB redesign and firmware changes - they are functionally distinct parts, not drop-in replacements.
MAX6958BAPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Display Type:
- LED
- Configuration:
- 7 Segment + 2 Annunciators
- Interface:
- SMBus (2-Wire/I2C)
- Digits or Characters:
- 4 Digits
- Current - Supply:
- 5.9 mA
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX6958BAPE+ FAQ
1.How can I place an order for MAX6958BAPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6958BAPE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6958BAPE+ reliable?
The price and inventory of MAX6958BAPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6958BAPE+ is usually 5 days.
3.What payment methods are accepted for MAX6958BAPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6958BAPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6958BAPE+?
MAX6958BAPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6958BAPE+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6958BAPE+?
For technical support, including MAX6958BAPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6958BAPE+ requirements.
6.How does Aetrix verify that MAX6958BAPE+ is sourced from the original manufacturer or authorized distributors?
All MAX6958BAPE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6958BAPE+ meets industry standards.
7.What is the process for return or replacement of MAX6958BAPE+?
All MAX6958BAPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6958BAPE+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6958BAPE+ part is unused and in its original packaging.
Return procedure for MAX6958BAPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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