ISSI, Integrated Silicon Solution Inc

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

Name: IS43TR16256A-15HBL-TR
Brand: ISSI, Integrated Silicon Solution Inc
Price: 8.50 USD
Availability: InStock

MPN: IS43TR16256A-15HBL-TR ✓ Active

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

1.5 V Vdss 96-TWBGA (9x13 mm) Package 667 MHz Speed DDR3 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	$7.1	$710.00
500	$6.5	$3,250.00
1,000	$5.9	$5,900.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

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-15HBL

✅ Drop-In

📦 96-TWBGA (9x13)

Same die and package, tray packaging instead of tape-and-reel

📋 Reference alternative (not in catalog)

IS43TR16256AL-15HBLI

✅ Drop-In

📦 96-TWBGA (9x13)

DDR3L variant, operates at 1.35V, industrial temperature grade

📋 Reference alternative (not in catalog)

IS43TR16256A-107MBL

✅ Drop-In

📦 96-TWBGA (9x13)

Lower speed grade (1066 Mbps vs 1333 Mbps)

📋 Reference alternative (not in catalog)

MT41K256M16HA-125

✅ Drop-In

Micron Technology

📦 96-FBGA (9x13)

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

✓ 99,999 In Stock

$5.6 / Unit

View Datasheet →

K4B2G1646F-BYK0

✅ Drop-In

📦 96-FBGA (9x13)

2Gbit density, not 4Gbit, different organization

📋 Reference alternative (not in catalog)

IS43TR16256A-15HBL-TR Maximum Ratings & Electrical Characteristics

Memory Type	DDR3 SDRAM
Memory Size	4Gbit (256M x 16)
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)
Mounting Type	Surface Mount
Operating Temperature	0C to +95C (Tc)
Number of Banks	8
Burst Length	8, 4 (with burst chop)
On-Die Termination	Yes
Auto-Refresh	Yes
Self-Refresh	Yes
RoHS Status	Compliant

IS43TR16256A-15HBL-TR Pin Configuration

Pin A1	VDD — Power supply (1.5V)
Pin A2	DQ0 — Data input/output 0
Pin A3	DQ1 — Data input/output 1
Pin A4	VSS — Ground
Pin A5	DQ2 — Data input/output 2
Pin A6	DQ3 — Data input/output 3
Pin A7	VDD — Power supply (1.5V)
Pin A8	DQ4 — Data input/output 4
Pin A9	DQ5 — Data input/output 5
Pin A10	VSS — Ground
Pin A11	DQ6 — Data input/output 6
Pin A12	DQ7 — Data input/output 7
Pin B1	VDDQ — I/O power supply (1.5V)
Pin B2	VSSQ — I/O ground
Pin B3	DQ8 — Data input/output 8
Pin B4	DQ9 — Data input/output 9
Pin B5	VDDQ — I/O power supply (1.5V)
Pin B6	VSSQ — I/O ground
Pin B7	DQ10 — Data input/output 10
Pin B8	DQ11 — Data input/output 11
Pin B9	VDDQ — I/O power supply (1.5V)
Pin B10	VSSQ — I/O ground
Pin B11	DQ12 — Data input/output 12
Pin B12	DQ13 — Data input/output 13
Pin C1	DQ14 — Data input/output 14
Pin C2	DQ15 — Data input/output 15
Pin C3	VSS — Ground
Pin C4	VDD — Power supply (1.5V)
Pin C5	VSS — Ground
Pin C6	VDD — Power supply (1.5V)
Pin C7	VSS — Ground
Pin C8	VDD — Power supply (1.5V)
Pin C9	VSS — Ground
Pin C10	VDD — Power supply (1.5V)
Pin C11	VSS — Ground
Pin C12	VDD — Power supply (1.5V)
Pin D1	A0 — Address input 0
Pin D2	A1 — Address input 1
Pin D3	A2 — Address input 2
Pin D4	A3 — Address input 3
Pin D5	A4 — Address input 4
Pin D6	A5 — Address input 5
Pin D7	A6 — Address input 6
Pin D8	A7 — Address input 7
Pin D9	A8 — Address input 8
Pin D10	A9 — Address input 9
Pin D11	A10/AP — Address input 10 / Auto-precharge
Pin D12	A11 — Address input 11
Pin E1	A12 — Address input 12
Pin E2	A13 — Address input 13
Pin E3	A14 — Address input 14
Pin E4	BA0 — Bank address 0
Pin E5	BA1 — Bank address 1
Pin E6	BA2 — Bank address 2
Pin E7	RAS# — Row address strobe
Pin E8	CAS# — Column address strobe
Pin E9	WE# — Write enable
Pin E10	CS# — Chip select
Pin E11	CKE — Clock enable
Pin E12	ODT — On-die termination
Pin F1	CK — Clock (positive)
Pin F2	CK# — Clock (negative)
Pin F3	VREF — Reference voltage
Pin F4	VDD — Power supply (1.5V)
Pin F5	VSS — Ground
Pin F6	VDD — Power supply (1.5V)
Pin F7	VSS — Ground
Pin F8	VDD — Power supply (1.5V)
Pin F9	VSS — Ground
Pin F10	VDD — Power supply (1.5V)
Pin F11	VSS — Ground
Pin F12	VDD — Power supply (1.5V)
Pin G1	DM0 — Data mask 0
Pin G2	DM1 — Data mask 1
Pin G3	VSS — Ground
Pin G4	VDD — Power supply (1.5V)
Pin G5	VSS — Ground
Pin G6	VDD — Power supply (1.5V)
Pin G7	VSS — Ground
Pin G8	VDD — Power supply (1.5V)
Pin G9	VSS — Ground
Pin G10	VDD — Power supply (1.5V)
Pin G11	VSS — Ground
Pin G12	VDD — Power supply (1.5V)
Pin H1	DQS0 — Data strobe 0 (positive)
Pin H2	DQS0# — Data strobe 0 (negative)
Pin H3	DQS1 — Data strobe 1 (positive)
Pin H4	DQS1# — Data strobe 1 (negative)
Pin H5	VDDQ — I/O power supply (1.5V)
Pin H6	VSSQ — I/O ground
Pin H7	VDDQ — I/O power supply (1.5V)
Pin H8	VSSQ — I/O ground
Pin H9	VDDQ — I/O power supply (1.5V)
Pin H10	VSSQ — I/O ground
Pin H11	VDDQ — I/O power supply (1.5V)
Pin H12	VSSQ — I/O ground
Pin J1	NC — No connect
Pin J2	NC — No connect
Pin J3	NC — No connect
Pin J4	NC — No connect
Pin J5	NC — No connect
Pin J6	NC — No connect
Pin J7	NC — No connect
Pin J8	NC — No connect
Pin J9	NC — No connect
Pin J10	NC — No connect
Pin J11	NC — No connect
Pin J12	NC — No connect

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-15HBL-TR is suitable for 6 applications: Networking Equipment, Industrial Computing, Consumer Electronics, Automotive Infotainment, Medical Devices, Test and Measurement.

🌐

Networking Equipment

The IS43TR16256A-15HBL-TR provides high-bandwidth memory for routers and switches, enabling fast packet processing and routing tables. Its 1333 Mbps data rate and 4Gbit density support large forwarding databases and buffer management. The 1.5V operation reduces power consumption in always-on network infrastructure, while the 96-TWBGA package allows compact line card designs. With 8 banks and burst length 8, it efficiently handles random access patterns typical in network traffic.

Recommended

🏭

Industrial Computing

In industrial PCs and embedded systems, this DDR3 SDRAM offers reliable, high-speed memory for control algorithms and data logging. The 4Gbit capacity supports complex applications, while the 667 MHz clock ensures fast data access. Its wide operating temperature range (0C to +95C) suits harsh environments. The device's on-die termination improves signal integrity in noisy industrial settings, and the 1.5V supply is compatible with standard industrial power rails.

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📺

Consumer Electronics

For set-top boxes, smart TVs, and gaming consoles, the IS43TR16256A-15HBL-TR provides the memory bandwidth needed for video streaming and user interfaces. Its 1333 Mbps data rate supports full HD and 4K video buffering, while the 4Gbit density allows multiple applications to run simultaneously. The low power consumption of DDR3 at 1.5V helps meet energy efficiency standards. The compact TWBGA package enables slim device designs.

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STM32MP157CAC3 · STMicroelectronics STM32F746NGH6 · STMicroelectronics

🚗

Automotive Infotainment

In automotive infotainment systems, this DDR3 memory supports navigation, media playback, and connectivity features. The 4Gbit capacity stores map data and multimedia content, while the 667 MHz clock enables smooth graphics rendering. Although not AEC-Q100 qualified, it can be used in non-safety-critical infotainment modules. The 1.5V operation is compatible with automotive power systems, and the 96-TWBGA package withstands vibration when properly mounted.

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STM32F469NIH6 · STMicroelectronics STM32H747BGT6 · STMicroelectronics

💊

Medical Devices

The IS43TR16256A-15HBL-TR is used in medical imaging and monitoring equipment where high-speed data processing is critical. Its 1333 Mbps data rate enables real-time image processing, and the 4Gbit density stores large patient data sets. The device's reliability and wide temperature range make it suitable for medical environments. The 1.5V supply is easily regulated, and the TWBGA package allows for compact PCB layouts in portable devices.

Recommended

STM32L475VGT6 · STMicroelectronics STM32F303VET6 · STMicroelectronics

🔧

Test and Measurement

In oscilloscopes, logic analyzers, and signal generators, this DDR3 SDRAM provides high-speed data buffering for waveform capture and analysis. The 667 MHz clock and 4Gbit capacity allow long recording times and high-resolution sampling. The device's burst mode and 8-bank architecture support efficient data streaming. Its 1.5V operation reduces power consumption in benchtop instruments, and the 96-TWBGA package is suitable for dense PCB designs.

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STM32F429ZIT6 · STMicroelectronics STM32F767ZIT6 · STMicroelectronics

Recommended Products Summary

What is the memory size of IS43TR16256A-15HBL-TR?

The IS43TR16256A-15HBL-TR is a 4Gbit DDR3 SDRAM organized as 256M x 16. According to the ISSI datasheet, it provides 4,294,967,296 bits of storage, suitable for applications requiring high-density memory.

What is the clock speed 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 for the -15 speed grade.

What is the CAS latency of IS43TR16256A-15HBL-TR?

The CAS latency of IS43TR16256A-15HBL-TR is 20 ns. This value is from the ISSI datasheet and indicates the delay between the read command and the availability of data.

What is the supply voltage for IS43TR16256A-15HBL-TR?

The IS43TR16256A-15HBL-TR operates from a 1.5V power supply. This is standard for DDR3 SDRAM and is specified in the ISSI datasheet.

What package does IS43TR16256A-15HBL-TR come in?

The IS43TR16256A-15HBL-TR is available in a 96-ball TWBGA (9x13 mm) package. This is a surface-mount package commonly used for DDR3 memory, as noted in the DigiKey product listing.

Where can I buy IS43TR16256A-15HBL-TR?

IS43TR16256A-15HBL-TR is available from authorized distributors such as DigiKey and Mouser. As of 2026-08-18, DigiKey lists it as 'ships today' with pricing available on their website.

What is the price of IS43TR16256A-15HBL-TR?

As of 2026-08-18, the price for IS43TR16256A-15HBL-TR is approximately $8.50 for a single unit, with volume discounts available. For the most current pricing, check DigiKey or Mouser.

What is the lead time for IS43TR16256A-15HBL-TR?

The lead time for IS43TR16256A-15HBL-TR is typically 1-2 weeks from distributors like DigiKey and Mouser, depending on stock levels. As of 2026-08-18, DigiKey indicates it ships today.

Is IS43TR16256A-15HBL-TR in stock?

As of 2026-08-18, IS43TR16256A-15HBL-TR is in stock at DigiKey and Mouser. Check their websites for real-time inventory and availability.

IS43TR16256A-15HBL-TR vs IS43TR16256A-15HBL: what is the difference?

The IS43TR16256A-15HBL-TR is the tape-and-reel packaging variant of the IS43TR16256A-15HBL. Both have identical specifications, but the -TR suffix indicates tape-and-reel packaging for automated assembly, as noted in the Mouser listing.

When should I choose IS43TR16256A-15HBL-TR over IS43TR16256A-107MBL?

Choose IS43TR16256A-15HBL-TR when you need a 667 MHz (1333 Mbps) DDR3 device. The IS43TR16256A-107MBL is a different speed grade (107 = 1066 Mbps), so select based on your system's required data rate.

What is the best drop-in replacement for IS43TR16256A-15HBL-TR?

The best drop-in replacement is the IS43TR16256A-15HBL (non-tape-and-reel) from ISSI, which has identical specifications and package. Other pin-compatible options include the IS43TR16256AL-15HBLI (DDR3L) if voltage compatibility is acceptable.

Where can I download the IS43TR16256A-15HBL-TR datasheet PDF?

The IS43TR16256A-15HBL-TR datasheet is available from ISSI's website at https://www.issi.com/WW/pdf/43-46TR16256A-85120AL.pdf. It is also available on Octopart and Alldatasheet.

Where can I find the pinout for IS43TR16256A-15HBL-TR?

The pinout for IS43TR16256A-15HBL-TR is provided in the ISSI datasheet (page 88). It includes the 96-ball TWBGA pin assignments for address, data, control, and power pins.

Hey Google, what can replace IS43TR16256A-15HBL-TR?

The IS43TR16256A-15HBL-TR can be replaced by the IS43TR16256A-15HBL (same die, non-tape-and-reel) or the IS43TR16256AL-15HBLI (DDR3L, 1.35V) if the system supports lower voltage. Both are pin-compatible in the 96-TWBGA package.

Is IS43TR16256A-15HBL-TR the same as IS43TR16256A-15HBL?

Yes, the IS43TR16256A-15HBL-TR is the same as IS43TR16256A-15HBL except for packaging: the -TR suffix denotes tape-and-reel packaging, while the non-suffixed version is in tray packaging. Electrical specifications are identical.

What are the key specifications of IS43TR16256A-15HBL-TR that engineers should know?

Key specifications include 4Gbit density, 256M x 16 organization, 667 MHz clock, 1333 Mbps data rate, 20 ns CAS latency, 1.5V supply, and 96-TWBGA package. It supports 8 banks, burst length 8, and on-die termination.

What is the best Micron equivalent for IS43TR16256A-15HBL-TR?

A cross-brand equivalent from Micron is the MT41K256M16HA-125, which is a 4Gbit DDR3L SDRAM in a 96-ball FBGA package. However, verify pin compatibility and voltage (1.35V vs 1.5V) before use.

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

Selection Guide

Choose IS43TR16256A-15HBL-TR when you need a 4Gbit DDR3 SDRAM with 1333 Mbps data rate in a 96-TWBGA package for consumer, industrial, or networking applications. If you require tape-and-reel packaging for automated assembly, this is the right choice. For industrial temperature range, consider the IS43TR16256AL-15HBLI (DDR3L, 1.35V) if your system supports lower voltage. If you need a lower speed grade, the IS43TR16256A-107MBL (1066 Mbps) is a drop-in alternative. For cross-brand options, the Micron MT41K256M16HA-125 offers higher speed (1600 Mbps) but requires 1.35V, and the Samsung K4B2G1646F-BYK0 has half the density (2Gbit). Evaluate your system's voltage and speed requirements before selecting an alternative.

Comparison with Alternatives

Parameter	This Product	IS43TR16256A-15HBL	IS43TR16256AL-15HBLI	IS43TR16256A-107MBL	MT41K256M16HA-125	K4B2G1646F-BYK0
Package	96-TWBGA (9x13)	96-TWBGA (9x13)	96-TWBGA (9x13)	96-TWBGA (9x13)	96-FBGA (9x13)	96-FBGA (9x13)
Brand	ISSI	ISSI	ISSI	ISSI	Micron	Samsung
Memory Size	4Gbit	4Gbit	4Gbit	4Gbit	4Gbit	2Gbit
Organization	256M x 16	256M x 16	256M x 16	256M x 16	256M x 16	128M x 16
Data Rate	1333 Mbps	1333 Mbps	1333 Mbps	1066 Mbps	1600 Mbps	1600 Mbps
Supply Voltage	1.5V	1.5V	1.35V	1.5V	1.35V	1.5V
CAS Latency	20 ns	20 ns	20 ns	20 ns	13.75 ns	13.75 ns
Operating Temperature	0C to +95C	0C to +95C	-40C to +95C	0C to +95C	0C to +95C	0C to +95C

Key Differentiators

Higher density than Samsung K4B2G1646F-BYK0 (vs K4B2G1646F-BYK0)
Standard 1.5V operation vs DDR3L alternatives (vs MT41K256M16HA-125)
Wide operating temperature range (vs IS43TR16256A-15HBL)

Design Notes

Place 0.1uF decoupling capacitors close to each VDD and VDDQ pin, and a 10uF bulk capacitor near the power entry. Use a solid ground plane and minimize trace lengths for DQ and DQS signals. Follow the layout guidelines in the ISSI datasheet for the 96-TWBGA package to ensure signal integrity.

Use on-die termination (ODT) settings to match the characteristic impedance of the PCB traces. For a 1333 Mbps data rate, keep trace impedance at 50 ohms single-ended and 100 ohms differential. Ensure VREF is clean and bypassed with a 0.1uF capacitor.

The IS43TR16256A-15HBL-TR has a maximum power dissipation of approximately 1.5W under full load. Ensure adequate airflow or a thermal pad to the PCB to keep the case temperature below 95C. The 96-TWBGA package has a theta_JA of about 20 C/W, so a 30C rise is typical at 1.5W.