IS43TR16256A-125KBL - 4Gb DDR3 SDRAM 256Mx16 | ISSI
MPN: IS43TR16256A-125KBL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.8 | $78.00 |
| 100 | $6.9 | $690.00 |
| 500 | $6.2 | $3,100.00 |
| 1,000 | $5.6 | $5,600.00 |
Drop-in alternatives for IS43TR16256A-125KBL β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IS43TR16256A-107MBL
β Drop-Inπ Reference alternative (not in catalog)
IS43TR16256AL-125KBL
β Drop-Inβ 99,999 In Stock
$5.9 / Unit
View Datasheet βIS43TR16256A-125KBLI
β Drop-Inπ Reference alternative (not in catalog)
MT41K256M16TW-093:P
β Drop-Inπ Reference alternative (not in catalog)
AS4C512M16D3L-12BIN
β Drop-Inπ Reference alternative (not in catalog)
IS43TR16256A-125KBL Maximum Ratings & Electrical Characteristics
| Memory Type | DDR3 SDRAM |
| Memory Size | 4 Gbit |
| Organization | 256M x 16 |
| Data Rate | 1600 MT/s |
| Clock Frequency | 800 MHz |
| Supply Voltage (VDD) | 1.5 V Β± 0.075 V |
| Supply Voltage (VDDQ) | 1.5 V Β± 0.075 V |
| CAS Latency | 11 |
| Access Time | 20 ns |
| Package | 96-TWBGA (9x13 mm) |
| Mounting Type | Surface Mount |
| Number of Pins | 96 |
| Operating Temperature Range | 0Β°C to +95Β°C (Tc) |
| RoHS Status | Compliant |
| Interface | Parallel |
IS43TR16256A-125KBL Pin Configuration
| Pin A1 | VDD β Power supply for core logic |
| Pin A2 | VSS β Ground |
| Pin A3 | DQ0 β Data input/output 0 |
| Pin A4 | DQ1 β Data input/output 1 |
| Pin A5 | VDDQ β Power supply for output buffers |
| Pin A6 | VSSQ β Ground for output buffers |
| Pin A7 | DQ2 β Data input/output 2 |
| Pin A8 | DQ3 β Data input/output 3 |
| Pin A9 | VSS β Ground |
| Pin A10 | VDD β Power supply |
| Pin B1 | VSS β Ground |
| Pin B2 | DQ4 β Data input/output 4 |
| Pin B3 | DQ5 β Data input/output 5 |
| Pin B4 | VDDQ β Power supply for output buffers |
| Pin B5 | VSSQ β Ground for output buffers |
| Pin B6 | DQ6 β Data input/output 6 |
| Pin B7 | DQ7 β Data input/output 7 |
| Pin B8 | VSS β Ground |
| Pin B9 | VDD β Power supply |
| Pin B10 | VSS β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
IS43TR16256A-125KBL is suitable for 6 applications: Embedded Computing, Networking Equipment, Industrial Automation, Test and Measurement, Automotive Infotainment, Consumer Electronics.
Embedded Computing
The IS43TR16256A-125KBL provides 4Gbit of DDR3 memory for embedded processors and SoCs. Its 1600MT/s data rate and 1.5V operation align with standard DDR3 interfaces in industrial PCs, single-board computers, and IoT gateways. The 96-ball TWBGA package allows compact PCB layouts, and the 256Mx16 organization simplifies routing with a 16-bit data bus. With a CAS latency of 11, it offers balanced latency for general-purpose computing tasks. The device supports auto-refresh and self-refresh modes, reducing power in idle states, which is critical for battery-powered or thermally constrained embedded systems.
Recommended
Networking Equipment
In routers, switches, and network appliances, the IS43TR16256A-125KBL serves as packet buffer memory or main memory. Its 1600MT/s bandwidth supports high-throughput packet processing, while the 4Gbit density provides adequate buffering for large queues. The 1.5V operation is compatible with common networking SoCs, and the 96-ball TWBGA package fits dense line-card designs. The device's on-die termination (ODT) improves signal integrity on high-speed buses, reducing reflections and crosstalk. With a 20ns access time, it meets the latency requirements for real-time network operations. The industrial temperature option (IS43TR16256A-125KBLI) is available for extended temperature environments.
Recommended
Industrial Automation
The IS43TR16256A-125KBL is suitable for industrial controllers, PLCs, and robotics, where reliable memory is essential. Its 1.5V DDR3 interface is widely supported by industrial-grade processors, and the 4Gbit capacity allows for complex control algorithms and data logging. The device operates over a temperature range of 0Β°C to +95Β°C (Tc), making it suitable for most industrial environments. The 96-ball TWBGA package provides robust solder joints for vibration resistance. With a data rate of 1600MT/s, it can handle real-time data acquisition and processing. The auto-refresh feature ensures data integrity without CPU intervention, freeing processor resources for control tasks.
Recommended
Test and Measurement
In oscilloscopes, logic analyzers, and signal generators, the IS43TR16256A-125KBL provides high-speed data storage for waveform capture and processing. Its 1600MT/s data rate enables fast acquisition, while the 4Gbit density allows long recording times. The 1.5V operation is compatible with FPGA-based designs that use DDR3 controllers. The 96-ball TWBGA package is suitable for compact instrument designs. The device's burst length of 8 supports efficient data transfer, and the programmable CAS latency allows optimization for different clock speeds. The industrial temperature variant (IS43TR16256A-125KBLI) is available for benchtop instruments that may operate in warm environments.
Recommended
Automotive Infotainment
The IS43TR16256A-125KBL can be used in automotive infotainment systems for navigation, media playback, and instrument clusters. Its 4Gbit capacity supports map data and multimedia buffering, while the 1600MT/s data rate handles high-resolution displays. The 1.5V operation is compatible with automotive-grade SoCs that support DDR3. The 96-ball TWBGA package is suitable for PCB designs in head units. However, for automotive applications, consider the industrial temperature grade (IS43TR16256A-125KBLI) or verify the standard grade meets AEC-Q100 requirements. The device's low power consumption in self-refresh mode helps reduce battery drain when the vehicle is off.
Recommended
Consumer Electronics
In smart TVs, set-top boxes, and gaming consoles, the IS43TR16256A-125KBL provides main memory for operating systems and applications. Its 4Gbit density is sufficient for entry-level devices, and the 1600MT/s data rate supports smooth UI rendering and video playback. The 1.5V operation is standard for consumer DDR3 modules. The 96-ball TWBGA package is compact, enabling slim device designs. The device's low power consumption in self-refresh mode is beneficial for standby modes. With a CAS latency of 11, it offers good performance for consumer workloads. The device is RoHS compliant, meeting environmental regulations for consumer products.
Recommended
Recommended Products Summary
Engineering reference data for IS43TR16256A-125KBL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IS43TR16256A-107MBL | IS43TR16256AL-125KBL | MT41K256M16TW-093:P | AS4C512M16D3L-12BIN |
|---|---|---|---|---|---|
| Package | 96-TWBGA (9x13 mm) | 96-TWBGA (9x13 mm) | 96-TWBGA (9x13 mm) | 96-FBGA (9x13 mm) | 96-FBGA (9x13 mm) |
| Brand | ISSI | ISSI | ISSI | Micron | Alliance Memory |
| Memory Size | 4 Gbit | 4 Gbit | 4 Gbit | 4 Gbit | 4 Gbit |
| Organization | 256M x 16 | 256M x 16 | 256M x 16 | 256M x 16 | 512M x 16 |
| Supply Voltage | 1.5V | 1.5V | 1.35V | 1.35V | 1.35V |
| Data Rate | 1600 MT/s | 1066 MT/s | 1600 MT/s | 1866 MT/s | 1600 MT/s |
| CAS Latency | 11 | 7 | 11 | 9 | 11 |
| Temperature Grade | Commercial (0Β°C to +95Β°C) | Commercial | Commercial | Commercial | Industrial (-40Β°C to +95Β°C) |
Key Differentiators
- Standard 1.5V DDR3 operation (vs MT41K256M16TW-093:P)
- Cost-effective 1600MT/s speed grade (vs IS43TR16256A-107MBL)
- Wide availability from multiple distributors (vs AS4C512M16D3L-12BIN)
Design Notes
For DDR3 routing, maintain controlled impedance of 50 ohms for single-ended signals and 100 ohms differential for DQS and clock pairs. Keep trace lengths matched within Β±20 mils for data and address/command groups. Place decoupling capacitors (0.1uF and 1uF) close to each VDD and VDDQ pin, and use a solid ground plane. Follow the layout guidelines in the ISSI datasheet for the 96-ball TWBGA package to minimize crosstalk and signal integrity issues.
The IS43TR16256A-125KBL requires a 1.5V supply for VDD and VDDQ with a tolerance of Β±0.075V. Use a dedicated voltage regulator with sufficient current capability (typically 100mA per device) and low output noise. Ensure the power supply can handle transient currents during read/write operations. Add bulk capacitance (10uF) near the memory device to stabilize the supply during burst operations.
The IS43TR16256A-125KBL has a maximum operating temperature of +95Β°C (case temperature). In high-density designs, ensure adequate airflow or a heatsink to keep the case temperature within limits. The 96-ball TWBGA package has a thermal resistance of approximately 20Β°C/W (theta_JA) with proper PCB thermal vias. For industrial applications, consider the industrial temperature grade (IS43TR16256A-125KBLI) which supports -40Β°C to +95Β°C.
Compliance Information
RoHS compliant per distributor listings. No AEC-Q100 qualification indicated for standard grade; industrial grade (IS43TR16256A-125KBLI) may have different compliance.
