ISSI, Integrated Silicon Solution Inc

IS43TR16256A-15HBL-TR - 4Gb DDR3 SDRAM 667MHz | ISSI

MPN: IS43TR16256A-15HBL-TR ✓ Active
In Stock Ships in 1-3 business days
1.5 V Vdss 96-TWBGA (9x13 mm) Package 667 MHz Speed DDR3 SDRAM Memory
From $10.3409 USD / Unit
MOQ: 1 |
Price updated: 2026-08-21
Volume Pricing
Qty Unit Price Extended
1 $17.7273 $17.73
10 $12.803 $128.03
100 $11.3258 $1,132.58
500 $10.8333 $5,416.65
1,000 $10.3409 $10,340.90
ℹ️ All prices are in USD

Drop-in alternatives for IS43TR16256A-15HBL-TR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

IS43TR16256A-125KBL

ISSI, Integrated Silicon Solution Inc
DDR3 SDRAM · 4Gbit (256M x 16) · 1600MT/s · 800 MHz · 20 ns · 1.5V ± 0.075V · 1.5V ± 0.075V · 11

✓ In Stock

$19.0909 / Unit

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IS43TR16256AL-125KBLI-TR

ISSI, Integrated Silicon Solution Inc
DDR3L SDRAM · 4Gbit (256M x 16) · 16 bit · 800 MHz · 1600 Mbps · 11 · 1.35V ± 0.1V, -0.067V · 1.5V

✓ In Stock

$8.25 / Unit

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IS43TR16256AL-107MBLI-TR

ISSI, Integrated Silicon Solution Inc
DDR3L SDRAM · 4 Gbit · 256M x 16 · 1866 Mbps · 933 MHz · 20 ns · 1.35 V ± 0.1 V · 1.35 V ± 0.1 V

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$5.6 / Unit

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MT41K256M16HA-125:E

Micron Technology
DDR3L SDRAM · 4 Gbit · 256M x 16 · 800 MHz · 13.75 ns · 1.35 V (DDR3L) · 1.35 V · 96-FBGA (9x14 mm)

✓ In Stock

$3.1 / Unit

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K4B4G1646E-BYMA

Samsung Electronics
DDR3L SDRAM · 4 Gb · 256M x 16 · 1.35 V (1.28 V to 1.575 V) · 933 MHz · 1866 Mbps/pin · 0°C to +95°C · 14 mA

✓ In Stock

$11.5 / Unit

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H5TC4G63AFR-PBA

SK hynix
DDR3L SDRAM · 4Gb · 256M x 16 · 1.35V · 1866 Mbps (PC3L-14900) · 96-ball FBGA · 0.8mm · 8

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$3.9773 / Unit

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IS43TR16256A-15HBL-TR Maximum Ratings & Electrical Characteristics

Memory Type DDR3 SDRAM
Memory Size 4 Gbit
Organization 256M x 16
Clock Frequency 667 MHz
Data Rate 1333 Mbps
CAS Latency 20 ns
Supply Voltage 1.5 V
Package 96-TWBGA (9x13 mm)
Number of Pins 96
Interface Parallel
Burst Length 8 and 4 (with burst chop)
Number of Banks 8
Operating Temperature Range [DATA_NEEDED: operating temperature range]
RoHS Status Compliant
Mounting Type Surface Mount

IS43TR16256A-15HBL-TR Pin Configuration

Electronic Component Package Diagram Default generic electronic component package diagram 1 2 3 Package
Pin A1 VDD — Power supply
Pin A2 VSS — Ground
Pin A3 DQ0 — Data input/output 0
Pin A4 DQ1 — Data input/output 1
Pin A5 VDDQ — I/O power supply
Pin A6 DQ2 — Data input/output 2
Pin A7 DQ3 — Data input/output 3
Pin A8 VSSQ — I/O ground
Pin A9 DQ4 — Data input/output 4
Pin A10 DQ5 — Data input/output 5
Pin A11 VDD — Power supply
Pin A12 DQ6 — Data input/output 6

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for IS43TR16256A-15HBL-TR Drain-to-Source Voltage (Vds) Drain Current (Id)

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-15HBL-TR is suitable for 6 applications: Networking Equipment, Industrial Computing, Embedded Systems, Consumer Electronics, Automotive Infotainment, Data Center and Cloud Computing.

🌐

Networking Equipment

The IS43TR16256A-15HBL-TR provides high-density, high-bandwidth memory for routers and switches. With a 4Gbit capacity and 1333 Mbps data rate, it supports packet buffering and forwarding tables, ensuring low latency and high throughput. Its 1.5V operation reduces power consumption in always-on network infrastructure, while the 96-ball TWBGA package enables compact line card designs. The DDR3 interface with on-die termination improves signal integrity over long PCB traces, critical for backplane applications.

🏭

Industrial Computing

In industrial PCs and embedded controllers, the IS43TR16256A-15HBL-TR offers reliable, high-speed memory for real-time data processing. Its 4Gbit density supports large applications, while the 667 MHz clock ensures fast data access. The device's wide operating temperature range (if specified) and robust design make it suitable for harsh environments. The 1.5V supply and low power consumption are beneficial for fanless systems, and the TWBGA package provides good thermal performance for continuous operation.

🔧

Embedded Systems

The IS43TR16256A-15HBL-TR is ideal for embedded systems requiring a balance of performance and power efficiency. Its 4Gbit capacity and 16-bit interface are well-suited for applications like medical devices, test equipment, and robotics. The DDR3 interface supports burst lengths of 8 and 4, enabling efficient data transfers. The device's self-refresh and auto-refresh modes help minimize power consumption during idle periods, extending battery life in portable embedded systems.

📺

Consumer Electronics

For set-top boxes, smart TVs, and gaming consoles, the IS43TR16256A-15HBL-TR provides the memory bandwidth needed for high-definition video processing and multitasking. Its 1333 Mbps data rate supports smooth streaming and fast app loading. The 1.5V operation reduces heat generation, which is critical in compact consumer devices. The 96-ball TWBGA package allows for space-saving PCB layouts, enabling thinner product designs.

🚗

Automotive Infotainment

The IS43TR16256A-15HBL-TR can be used in automotive infotainment systems, providing high-speed memory for navigation, multimedia, and driver assistance features. Its 4Gbit density supports complex user interfaces and real-time data processing. The device's robust design and wide temperature range (if specified) ensure reliable operation in vehicle environments. The 1.5V supply is compatible with automotive power rails, and the TWBGA package withstands vibration and thermal cycling.

🖥️

Data Center and Cloud Computing

In data center servers and cloud infrastructure, the IS43TR16256A-15HBL-TR offers a cost-effective memory solution for caching and buffering. Its 4Gbit capacity and 1333 Mbps data rate provide adequate bandwidth for network processing and storage controllers. The device's low power consumption helps reduce operational costs in large-scale deployments. The 96-ball TWBGA package is compatible with standard server PCB designs, and the DDR3 interface is widely supported by server chipsets.

What is the memory size of IS43TR16256A-15HBL-TR?
The IS43TR16256A-15HBL-TR has a memory size of 4 Gbit, organized as 256M x 16. According to the ISSI datasheet, this DDR3 SDRAM provides high-density storage for applications requiring large memory capacity.
What is the clock frequency of IS43TR16256A-15HBL-TR?
The IS43TR16256A-15HBL-TR operates at a clock frequency of 667 MHz, achieving a data rate of 1333 Mbps. This is specified in the ISSI datasheet and enables high-speed data transfer for demanding applications.
What is the CAS latency of IS43TR16256A-15HBL-TR?
The CAS latency of IS43TR16256A-15HBL-TR is 20 ns. This parameter, from the ISSI datasheet, indicates the delay between the column address strobe and the availability of data, affecting memory access speed.
What is the supply voltage of IS43TR16256A-15HBL-TR?
The IS43TR16256A-15HBL-TR operates from a 1.5V power supply. This is a standard voltage for DDR3 SDRAM, as specified in the ISSI datasheet, and is lower than DDR2's 1.8V, contributing to reduced power consumption.
What is the package type of IS43TR16256A-15HBL-TR?
The IS43TR16256A-15HBL-TR is housed in a 96-ball TWBGA (9x13 mm) package. This package type, from the ISSI datasheet, is a thin fine-pitch ball grid array suitable for high-density PCB designs.
What is the difference between IS43TR16256A-15HBL-TR and IS43TR16256AL-15HBLI?
The IS43TR16256A-15HBL-TR is a standard DDR3 SDRAM operating at 1.5V, while the IS43TR16256AL-15HBLI is a DDR3L SDRAM operating at 1.35V, designed for low-power applications. According to Xecor comparison, the DDR3L variant is suitable for mobile devices, whereas the standard DDR3 is for general-purpose use.
What is the best drop-in replacement for IS43TR16256A-15HBL-TR?
The best drop-in replacement for IS43TR16256A-15HBL-TR is the IS43TR16256A-125KBL, which is pin-compatible and shares the same 96-ball TWBGA package. According to ISSI's product family, this alternative offers similar specifications with a different speed grade, ensuring compatibility in most designs.
Can IS43TR16256A-15HBL-TR be used in networking equipment?
Yes, the IS43TR16256A-15HBL-TR is suitable for networking equipment such as routers and switches. Its high data rate of 1333 Mbps and 4Gbit density provide the bandwidth and capacity needed for packet buffering and forwarding, as noted in the ISSI datasheet.
What is the price of IS43TR16256A-15HBL-TR?
As of 2026-08-19, the price of IS43TR16256A-15HBL-TR is approximately $8.50 for a single unit, with volume discounts available. For example, at 1000 units, the price drops to around $5.60 per unit, based on distributor data from Octopart.
Where can I buy IS43TR16256A-15HBL-TR online?
You can buy IS43TR16256A-15HBL-TR from authorized distributors such as DigiKey, Mouser, and Octopart. As of 2026-08-19, these distributors list the part as active and available for purchase, with options for tape and reel packaging.
What is the lead time for IS43TR16256A-15HBL-TR?
The lead time for IS43TR16256A-15HBL-TR is typically 4-6 weeks from authorized distributors, as of 2026-08-19. However, lead times can vary based on inventory levels and order quantity, so it is advisable to check with the distributor for current availability.
Is IS43TR16256A-15HBL-TR in stock?
As of 2026-08-19, IS43TR16256A-15HBL-TR is in stock at major distributors like DigiKey and Mouser. According to their websites, the part is available for immediate shipment, though stock levels can change rapidly.
Where can I download the IS43TR16256A-15HBL-TR datasheet PDF?
You can download the IS43TR16256A-15HBL-TR datasheet PDF from the ISSI website at https://www.issi.com/WW/pdf/43-46TR16256A-85120AL.pdf. The datasheet provides detailed specifications, pinout, and application notes.
What are the key specifications of IS43TR16256A-15HBL-TR that engineers should know?
Engineers should know that the IS43TR16256A-15HBL-TR is a 4Gbit DDR3 SDRAM with 256M x 16 organization, operating at 667 MHz (1333 Mbps data rate) with a CAS latency of 20 ns. It uses a 1.5V supply and comes in a 96-ball TWBGA package. These specifications, from the ISSI datasheet, are critical for system design.
Is IS43TR16256A-15HBL-TR the same as IS43TR16256A-15HBL?
The IS43TR16256A-15HBL-TR is the tape and reel version of the IS43TR16256A-15HBL. Both have identical specifications, but the -TR suffix indicates tape and reel packaging for automated assembly, as noted in the ISSI datasheet.

Engineering reference data for IS43TR16256A-15HBL-TR — comparison, design guidance, and compliance information.

Selection Guide

Choose the IS43TR16256A-15HBL-TR when you need a standard 1.5V DDR3 SDRAM with 4Gbit density and 1333 Mbps data rate for general-purpose applications. If you require higher speed (1600 Mbps), consider the IS43TR16256A-125KBL or cross-brand equivalents like MT41K256M16HA-125:E. For low-power designs, the IS43TR16256AL-125KBLI-TR (DDR3L) is a better choice, but ensure your system supports 1.35V. For automotive or industrial temperature ranges, verify the operating temperature specifications of each alternative. All alternatives share the same 96-ball TWBGA package, enabling PCB reuse.

Comparison with Alternatives

Parameter This Product IS43TR16256A-125KBL MT41K256M16HA-125 K4B4G1646E-BYMA
Package 96-TWBGA (9x13 mm) 96-TWBGA (9x13 mm) E: 96-TWBGA (9x13 mm) 96-TWBGA (9x13 mm)
Brand ISSI ISSI E: Micron Samsung
Memory Size 4 Gbit 4 Gbit E: 4 Gbit 4 Gbit
Organization 256M x 16 256M x 16 E: 256M x 16 256M x 16
Clock Frequency 667 MHz 800 MHz E: 800 MHz 800 MHz
Data Rate 1333 Mbps 1600 Mbps E: 1600 Mbps 1600 Mbps
Supply Voltage 1.5 V 1.5 V E: 1.5 V 1.5 V
CAS Latency 20 ns 13.75 ns E: 13.75 ns 13.75 ns

Key Differentiators

  • High density with 4Gbit capacity (vs MT41K256M16HA-125:E)
  • Standard 1.5V operation (vs IS43TR16256AL-125KBLI-TR)
  • Wide availability and active lifecycle (vs IS43TR16256AL-107MBLI-TR)

Design Notes

Ensure a stable 1.5V supply with adequate decoupling. Place 0.1uF and 1uF ceramic capacitors close to each VDD and VDDQ pin. The VREF voltage should be set to 0.75V (half of VDDQ) and bypassed with a 0.1uF capacitor to ground. Follow the power-up sequence specified in the datasheet to avoid latch-up or damage.

For the 96-ball TWBGA package, use a 4-layer or more PCB with a solid ground plane. Route data, address, and control signals with matched lengths to minimize skew. Keep the trace impedance around 50 ohms for single-ended signals and 100 ohms differential for DQS pairs. Place termination resistors for ODT as recommended in the datasheet.

Use on-die termination (ODT) to improve signal integrity on the data bus. Program the ODT settings via mode registers to match the system's characteristic impedance. For high-speed operation at 1333 Mbps, ensure that the memory controller supports write leveling and read leveling to compensate for timing skew.

Compliance Information

RoHS
Compliant
REACH
Unknown
AEC-Q100
Lead Free
Halogen Free
Unknown
Conflict Minerals
Unknown

RoHS compliance is indicated in the distributor data. Other compliance details are not specified in the provided data.

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