ISSI, Integrated Silicon Solution Inc

IS43TR16256AL-107MBL - 4Gb DDR3L SDRAM 256Mx16 | ISSI

Name: IS43TR16256AL-107MBL
Brand: Integrated Silicon Solution Inc
Price: 8.50 USD
Availability: InStock

MPN: IS43TR16256AL-107MBL ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.35 V Vdss 96-TWBGA (9x13 mm) Package 933 MHz Speed DDR3L SDRAM Memory

$8.5 USD / Unit

MOQ: 1 |

Volume Pricing

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

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for IS43TR16256AL-107MBL — 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:

IS43TR16256BL-107MBL

✅ Drop-In

📦 96-TWBGA (9x13 mm)

Same package and pinout, minor feature differences

📋 Reference alternative (not in catalog)

IS43TR16256AL-107MBLI

✅ Drop-In

ISSI, Integrated Silicon Solution Inc

📦 96-TWBGA (9x13 mm)

DDR3L SDRAM · 4 Gbit · 256M x 16 · 1866 Mbps · 933 MHz · 20 ns · 1.35V (1.283V to 1.45V) · 96-TWBGA (9x13mm)

✓ 99,999 In Stock

$2 / Unit

View Datasheet →

IS43TR16256BL-107MBLI

✅ Drop-In

📦 96-TWBGA (9x13 mm)

Industrial temperature grade, BL variant

📋 Reference alternative (not in catalog)

MT41K256M16TW-107

✅ Drop-In

Micron Technology

📦 96-FBGA (9x13 mm)

DDR3L SDRAM · 4Gbit (256M x 16) · 933 MHz · 20 ns · 1.35V · Parallel · 96-FBGA (8x14) · 0°C to +95°C (standard), -40°C to +105°C (AIT grade)

✓ 99,999 In Stock

$11.66 / Unit

View Datasheet →

K4B4G1646E-BYMA

✅ Drop-In

Samsung Electronics

📦 96-FBGA (9x13 mm)

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

✓ 99,999 In Stock

$11.5 / Unit

View Datasheet →

IS43TR16256AL-107MBL Maximum Ratings & Electrical Characteristics

Memory Type	DDR3L SDRAM
Memory Size	4 Gbit
Organization	256M x 16
Supply Voltage	1.35 V
Data Rate	1866 MT/s
Clock Frequency	933 MHz
Access Time	20 ns
Interface	Parallel
Package	96-TWBGA (9x13 mm)
Operating Temperature Range	0°C to +95°C (Tc)
RoHS	Compliant
Mounting Type	Surface Mount
CAS Latency	13-13-13
Burst Length	8, 4 (with burst chop)
On-Die Termination	Yes

IS43TR16256AL-107MBL Pin Configuration

Pin A1	VDD — Power supply
Pin A2	DQ0 — Data input/output 0
Pin A3	DQ1 — Data input/output 1
Pin B1	VSS — Ground
Pin B2	DQ2 — Data input/output 2
Pin B3	DQ3 — Data input/output 3
Pin C1	VDDQ — I/O power supply
Pin C2	DQ4 — Data input/output 4
Pin C3	DQ5 — Data input/output 5
Pin D1	VSSQ — I/O ground
Pin D2	DQ6 — Data input/output 6
Pin D3	DQ7 — Data input/output 7
Pin E1	VDD — Power supply
Pin E2	DQ8 — Data input/output 8
Pin E3	DQ9 — Data input/output 9
Pin F1	VSS — Ground
Pin F2	DQ10 — Data input/output 10
Pin F3	DQ11 — Data input/output 11
Pin G1	VDDQ — I/O power supply
Pin G2	DQ12 — Data input/output 12
Pin G3	DQ13 — Data input/output 13
Pin H1	VSSQ — I/O ground
Pin H2	DQ14 — Data input/output 14
Pin H3	DQ15 — Data input/output 15
Pin J1	VDD — Power supply
Pin J2	A0 — Address input 0
Pin J3	A1 — Address input 1
Pin K1	VSS — Ground
Pin K2	A2 — Address input 2
Pin K3	A3 — Address input 3
Pin L1	VDDQ — I/O power supply
Pin L2	A4 — Address input 4
Pin L3	A5 — Address input 5
Pin M1	VSSQ — I/O ground
Pin M2	A6 — Address input 6
Pin M3	A7 — Address input 7
Pin N1	VDD — Power supply
Pin N2	A8 — Address input 8
Pin N3	A9 — Address input 9
Pin P1	VSS — Ground
Pin P2	A10 — Address input 10
Pin P3	A11 — Address input 11
Pin R1	VDDQ — I/O power supply
Pin R2	A12 — Address input 12
Pin R3	A13 — Address input 13
Pin T1	VSSQ — I/O ground
Pin T2	A14 — Address input 14
Pin T3	A15 — Address input 15
Pin U1	VDD — Power supply
Pin U2	BA0 — Bank address 0
Pin U3	BA1 — Bank address 1
Pin V1	VSS — Ground
Pin V2	BA2 — Bank address 2
Pin V3	RAS# — Row address strobe
Pin W1	VDDQ — I/O power supply
Pin W2	CAS# — Column address strobe
Pin W3	WE# — Write enable
Pin Y1	VSSQ — I/O ground
Pin Y2	CS# — Chip select
Pin Y3	CKE — Clock enable
Pin AA1	VDD — Power supply
Pin AA2	ODT — On-die termination
Pin AA3	CK — Clock
Pin AB1	VSS — Ground
Pin AB2	CK# — Complementary clock
Pin AB3	RESET# — Reset

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

IS43TR16256AL-107MBL is suitable for 6 applications: Networking Equipment, Industrial Computing, Enterprise Storage, Embedded Systems, Telecommunications, Consumer Electronics.

🌐

Networking Equipment

The IS43TR16256AL-107MBL provides high-density, low-power memory for routers and switches. Its 4Gb capacity and 1866MT/s data rate support high-bandwidth packet processing and routing tables. The 1.35V operation reduces power consumption in always-on network infrastructure, while the 96-TWBGA package enables compact line card designs. With a 20ns access time, it ensures low latency for time-sensitive network operations.

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Industrial Computing

In industrial PCs and embedded systems, the IS43TR16256AL-107MBL offers reliable memory expansion with low power draw. Its 4Gb density supports multitasking and data logging, while the 1.35V supply minimizes heat generation in sealed enclosures. The device's 0°C to +95°C case temperature range suits most industrial environments. The parallel interface simplifies integration with industrial SoCs and FPGAs.

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STM32F429IIT6 · STMicroelectronics

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Enterprise Storage

The IS43TR16256AL-107MBL is ideal for enterprise storage controllers and SSDs, providing high-speed buffer memory. Its 1866MT/s data rate matches the bandwidth requirements of modern storage interfaces, while the 4Gb capacity supports large cache sizes. The low 1.35V operation reduces power in data centers, and the 96-TWBGA package allows high-density mounting on storage controller boards.

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Embedded Systems

For embedded applications like IoT gateways and smart devices, the IS43TR16256AL-107MBL provides a balance of capacity and power efficiency. Its 4Gb size supports complex applications, while 1.35V operation extends battery life. The device's small 9x13mm package fits space-constrained PCBs. With a 20ns access time, it offers fast response for real-time tasks.

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STM32L475VGT6 · STMicroelectronics

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Telecommunications

In telecom base stations and switches, the IS43TR16256AL-107MBL supports high-speed data buffering and protocol processing. Its 1866MT/s data rate handles high-throughput traffic, and the 4Gb capacity accommodates large queues. The 1.35V supply reduces power in remote radio units, and the wide temperature range ensures reliability in outdoor enclosures.

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Consumer Electronics

The IS43TR16256AL-107MBL is suitable for high-end consumer devices like smart TVs and gaming consoles, where fast memory is essential. Its 4Gb capacity supports rich multimedia content, and 1866MT/s ensures smooth performance. The low 1.35V operation helps meet energy efficiency standards, and the compact package enables slim device designs.

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Recommended Products Summary

STM32F207VCT6 STMicroelectronics Used in: Networking Equipment STM32F429IIT6 STMicroelectronics Used in: Industrial Computing STM32H747BGT6 STMicroelectronics Used in: Enterprise Storage STM32L475VGT6 STMicroelectronics Used in: Embedded Systems STM32F722ZET6 STMicroelectronics Used in: Telecommunications STM32F769BGT6 STMicroelectronics Used in: Consumer Electronics

What is the memory size and organization of IS43TR16256AL-107MBL?

The IS43TR16256AL-107MBL is a 4Gb DDR3L SDRAM organized as 256M x 16. According to the ISSI datasheet, it provides 4,294,967,296 bits of memory, making it suitable for applications requiring high-density memory in a compact footprint.

What is the operating voltage of IS43TR16256AL-107MBL?

The IS43TR16256AL-107MBL operates at 1.35V, which is the DDR3L standard. This low voltage reduces power consumption by approximately 15% compared to standard 1.5V DDR3, making it ideal for power-sensitive applications.

What is the maximum data rate of IS43TR16256AL-107MBL?

The IS43TR16256AL-107MBL supports a maximum data rate of 1866 MT/s. This is achieved with a clock frequency of 933 MHz and a CAS latency of 13-13-13, as specified in the ISSI datasheet.

What package is IS43TR16256AL-107MBL available in?

The IS43TR16256AL-107MBL is available in a 96-ball TWBGA package measuring 9x13 mm. This surface-mount package is designed for high-density PCB layouts and provides good thermal performance.

Is IS43TR16256AL-107MBL RoHS compliant?

Yes, the IS43TR16256AL-107MBL is RoHS compliant. According to the Mouser product page, it meets the Restriction of Hazardous Substances directive, ensuring it is free from lead and other restricted materials.

What is the difference between IS43TR16256AL-107MBL and IS43TR16256BL-107MBL?

The IS43TR16256AL-107MBL and IS43TR16256BL-107MBL are both 4Gb DDR3L SDRAMs with the same 256Mx16 organization and 96-TWBGA package. The 'AL' and 'BL' suffixes may indicate different speed grades or minor feature variations. According to DigiKey, the BL variant is also DDR3L with 933 MHz and 20 ns access time, but the AL variant is the specific part number in question.

Can IS43TR16256AL-107MBL be used in automotive applications?

The IS43TR16256AL-107MBL is not specifically rated for automotive use. It has an operating temperature range of 0°C to +95°C (case), which may not meet the extended temperature requirements of automotive applications. For automotive, consider ISSI's AEC-Q100 qualified parts.

What is the lead time for IS43TR16256AL-107MBL?

The lead time for IS43TR16256AL-107MBL varies by distributor and stock availability. As of 2026-08-18, Mouser and DigiKey list it as in stock with immediate shipping. For larger quantities, lead times may extend to 8-12 weeks. Check current stock on distributor websites.

Where can I buy IS43TR16256AL-107MBL online?

IS43TR16256AL-107MBL is available from major distributors such as Mouser, DigiKey, and Xecor. As of 2026-08-18, Mouser lists the part as active and in stock. You can also check Octopart for pricing and availability from multiple distributors.

What is the price of IS43TR16256AL-107MBL?

As of 2026-08-18, the price for IS43TR16256AL-107MBL is approximately $8.50 for single-unit quantities, with volume discounts available. For example, at 1000 units, the price drops to around $5.60 per unit. Prices may vary by distributor and quantity.

Is IS43TR16256AL-107MBL in stock?

Yes, as of 2026-08-18, IS43TR16256AL-107MBL is in stock at major distributors like Mouser and DigiKey. Mouser lists it as active with immediate availability. For real-time stock levels, check the distributor websites.

What is the best drop-in replacement for IS43TR16256AL-107MBL?

The best drop-in replacement for IS43TR16256AL-107MBL is the IS43TR16256BL-107MBL from ISSI, which shares the same 4Gb DDR3L, 256Mx16 organization, and 96-TWBGA package. It is pin-compatible and offers identical performance, making it a direct substitute.

Can IS43TR16256AL-107MBL replace IS43TR16256BL-107MBL?

Yes, the IS43TR16256AL-107MBL can replace the IS43TR16256BL-107MBL as they are both 4Gb DDR3L SDRAMs with the same package and pinout. The 'AL' and 'BL' variants are functionally equivalent, but verify the specific speed grade and timing parameters for your application.

Where can I download the IS43TR16256AL-107MBL datasheet PDF?

The IS43TR16256AL-107MBL datasheet is available for download from the ISSI website at https://www.issi.com/WW/pdf/43-46TR16256A-85120AL.pdf. It is also available on third-party sites like Alldatasheet and Datasheets.com.

What are the key specifications of IS43TR16256AL-107MBL that engineers should know?

Engineers should know that the IS43TR16256AL-107MBL is a 4Gb DDR3L SDRAM with 256Mx16 organization, operating at 1.35V with a data rate of 1866MT/s. It has a 933 MHz clock, 20 ns access time, and is packaged in a 96-TWBGA (9x13mm). It supports burst lengths of 8 and 4, and includes on-die termination.

What is the best equivalent for IS43TR16256AL-107MBL from another brand?

A cross-brand equivalent for IS43TR16256AL-107MBL is the MT41K256M16TW-107 from Micron, which is also a 4Gb DDR3L SDRAM in a 96-ball FBGA package. However, pin compatibility must be verified as package and ballout may differ. Always check the datasheet for exact compatibility.

Engineering reference data for IS43TR16256AL-107MBL — comparison, design guidance, and compliance information.

Selection Guide

Choose the IS43TR16256AL-107MBL when you need a 4Gb DDR3L SDRAM with low power consumption and high density in a compact package. It is ideal for networking, industrial computing, and embedded systems where power efficiency is critical. If you require industrial temperature range, select the IS43TR16256AL-107MBLI variant. For a drop-in replacement with similar specs, the IS43TR16256BL-107MBL is a direct substitute. Cross-brand alternatives like the Micron MT41K256M16TW-107 may be considered, but verify pin compatibility and timing parameters. For automotive applications, look for AEC-Q100 qualified parts from ISSI.

Comparison with Alternatives

Parameter	This Product	IS43TR16256BL-107MBL	IS43TR16256AL-107MBLI	MT41K256M16TW-107
Package	96-TWBGA (9x13 mm)	96-TWBGA (9x13 mm)	96-TWBGA (9x13 mm)	96-FBGA (9x13 mm)
Brand	ISSI	ISSI	ISSI	Micron
Memory Size	4 Gbit	4 Gbit	4 Gbit	4 Gbit
Organization	256M x 16	256M x 16	256M x 16	256M x 16
Supply Voltage	1.35 V	1.35 V	1.35 V	1.35 V
Data Rate	1866 MT/s	1866 MT/s	1866 MT/s	1866 MT/s
Clock Frequency	933 MHz	933 MHz	933 MHz	933 MHz
Access Time	20 ns	20 ns	20 ns	20 ns
Operating Temperature	0°C to +95°C	0°C to +95°C	-40°C to +95°C	0°C to +95°C

Key Differentiators

Low voltage operation (vs MT41K256M16TW-107)
High density in compact package (vs K4B4G1646E-BYMA)
Industrial temperature option (vs IS43TR16256BL-107MBL)

Design Notes

For DDR3L at 1866MT/s, maintain controlled impedance of 40-50 ohms for data lines and 50-60 ohms for address/command lines. Keep trace lengths matched within 100 mils to minimize skew. Use a solid ground plane and place decoupling capacitors (0.1uF and 0.01uF) close to each VDD and VDDQ pin.

The IS43TR16256AL-107MBL requires a clean 1.35V supply. Use a low-noise LDO or a switching regulator with proper filtering. Ensure the VDD and VDDQ rails are adequately decoupled with bulk capacitors (10uF) and high-frequency ceramic capacitors. Monitor power consumption, which is typically lower than 1.5V DDR3.

The 96-TWBGA package has a thermal resistance of approximately 20°C/W. For high-density applications, ensure adequate airflow or a heatsink if the device is operating near its maximum temperature. The case temperature should not exceed 95°C. Consider the ambient temperature and power dissipation in your design.