Samsung Electronics

K6F1616U6A-EF55T - 16Mbit Async SRAM 55ns 48-TFBGA | Samsung

MPN: K6F1616U6A-EF55T βœ“ Active
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2.7 V to 3.3 V Vdss [DATA_NEEDED: standby current] Id 48-TFBGA (7.5 x 9.5 mm) Package N/A (asynchronous, no clock required) Speed SRAM - Asynchronous Memory
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Drop-in alternatives for K6F1616U6A-EF55T 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:

K6F1616U6A-EF55

βœ… Drop-In
πŸ“¦ 48-TFBGA (7.5 x 9.5 mm)
identical die, package, and electrical specs; tray packaging instead of Tape and Reel (delivery format only, 0% electrical difference)

πŸ“‹ Reference alternative (not in catalog)

K6F1616U6A-EF55T Maximum Ratings & Electrical Characteristics

Memory Type SRAM - Asynchronous
Memory Size 16 Mbit
Organization 1M x 16
Interface Parallel
Access Time 55 ns
Supply Voltage Range 2.7 V to 3.3 V
Technology Full CMOS Static RAM
Package 48-TFBGA (7.5 x 9.5 mm)
Mounting Type Surface Mount
Packaging Tape & Reel (T suffix)
Clock Frequency N/A (asynchronous, no clock required)
Refresh Requirement None (static RAM)

K6F1616U6A-EF55T 48-tfbga (7.5 x 9.5 mm) Pin Configuration Guide

Complete pinout information for K6F1616U6A-EF55T (48-tfbga (7.5 x 9.5 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.

48-tfbga (7.5 x 9.5 mm) package pinout diagram for K6F1616U6A-EF55T

No detailed pinout data available for K6F1616U6A-EF55T.

Refer to the datasheet for full pin configuration.

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for K6F1616U6A-EF55T 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

K6F1616U6A-EF55T is suitable for 6 applications: Battery-Powered Portable Instrumentation, Industrial Control and PLC Data Buffers, Legacy SRAM Replacement in Embedded Designs, Networking Line-Card Buffer Memory, Medical and Test Instrumentation Data Storage, FPGA Reference Design Scratchpad.

πŸ”‹

Battery-Powered Portable Instrumentation

The K6F1616U6A-EF55T is a strong fit for battery-powered instruments because Samsung designs the K6F1616U6A family as a super-low-power, low-voltage full-CMOS static RAM operating from 2.7V to 3.3V - directly compatible with a 3.0V lithium cell or 3.3V rail without a regulator stage. Its asynchronous architecture needs no clock or refresh, so a microcontroller can clock-gate the bus and drop the part into standby simply by deselecting chip enable. The 1M x16 organization supplies 2MB of fast scratchpad or data-logging memory with deterministic 55ns access. The 48-TFBGA (7.5 x 9.5 mm) footprint keeps handheld and portable PCBs compact.

🏭

Industrial Control and PLC Data Buffers

In PLCs, motor control panels, and factory automation controllers, the K6F1616U6A-EF55T provides 2MB of deterministic, zero-refresh working memory between the microprocessor and process I/O. The 55ns access time supports zero or single wait-state operation from industrial-grade MCUs and FPGAs, while the parallel 16-bit bus lets controllers move logged events and setpoint tables efficiently. Full-CMOS cells tolerate the wide temperature swings typical of factory floors without refresh-related data loss risk, and the wide 2.7V to 3.3V input range rides through supply sag on 3.3V industrial logic rails.

πŸ”§

Legacy SRAM Replacement in Embedded Designs

Many legacy embedded designs were built around Samsung's K6X0808/K6X1008 TSOP SRAM families or other 16Mbit-class asynchronous SRAMs that are now in constrained supply. The K6F1616U6A-EF55T provides the same asynchronous, no-refresh interface paradigm in a modern low-voltage full-CMOS die, letting designers extend product life with a parameter-matched 1M x16, 55ns device. Migration typically requires only address/data remapping to the 48-TFBGA ball map and verification that the host tolerates the 2.7V to 3.3V range, since some older TSOP parts ran at 4.5V to 5.5V.

🌐

Networking Line-Card Buffer Memory

Network equipment such as switches, routers, and DSLAM line cards uses asynchronous SRAM for statistics counters, queuing tables, and control-plane buffers. The K6F1616U6A-EF55T's 55ns access and 1M x16 organization suit 16-bit-wide counter and descriptor tables that must be read-modify-written quickly without the added controller complexity of synchronous SRAM pipelines. The 2.7V to 3.3V supply integrates with standard 3.3V backplane logic, and the compact 48-TFBGA (7.5 x 9.5 mm) ball-grid array allows dense placement under BGA network processors where TSOP height and clearance are limited.

πŸ’Š

Medical and Test Instrumentation Data Storage

Portable medical monitors and bench instruments require volatile working memory with deterministic timing for waveform capture, calibration tables, and sensor buffering. The K6F1616U6A-EF55T delivers 2MB of 55ns asynchronous storage with no refresh cycles, so a real-time loop is never stalled by memory housekeeping - an important factor in sampling systems with hard deadlines. Its full-CMOS construction minimizes average current draw in battery or patient-worn devices, and the low 2.7V floor allows operation from a single 3.0V cell through discharge, simplifying the power tree versus 5V-class legacy SRAM.

🧩

FPGA Reference Design Scratchpad

FPGA-based systems frequently attach external asynchronous SRAM as a scratchpad for soft-processor heaps, video line buffers, or DSP working arrays. The K6F1616U6A-EF55T's parallel 16-bit asynchronous interface maps directly onto a simple FPGA memory controller built from chip enable, output enable, and write enable strobes - no clock-domain logic or refresh sequencer is required. At 55ns, a 50MHz FPGA fabric can complete one access every few cycles without wait-state gymnastics. The 48-TFBGA footprint sits cleanly beside BGA-packaged FPGAs such as the Microsemi families used in industrial and aerospace boards.

What is the K6F1616U6A-EF55T and what are its key specifications?
The K6F1616U6A-EF55T is a Samsung 16Mbit asynchronous SRAM organized as 1M x16 bits. Its headline specifications are a 55ns access time, a 2.7V to 3.3V single supply, a parallel 16-bit data interface, and a 48-TFBGA (7.5 x 9.5 mm) package. It is a super-low-power full-CMOS static RAM requiring no refresh, per the Samsung datasheet. The T suffix indicates Tape and Reel packaging for automated assembly.
What is the supply voltage range of the K6F1616U6A-EF55T?
The K6F1616U6A-EF55T operates from a single supply of 2.7V to 3.3V, per Samsung product data. This range covers nominal 3.0V lithium coin cells and 3.3V logic rails, making the device suitable for battery-operated and low-voltage embedded systems. Inputs and outputs are 3V-class CMOS levels; do not connect it directly to 5V buses without level shifting.
What is the access time of the K6F1616U6A-EF55T?
The access time of the K6F1616U6A-EF55T is 55ns, as indicated by the EF55 speed suffix and confirmed by DigiKey product data. This means address-to-output delay is 55ns maximum, allowing zero-wait-state operation from microcontrollers running at roughly 18MHz bus speeds, or one wait state from faster hosts. Verify full timing against the Samsung datasheet AC characteristics table before finalizing controller timing.
What package does the K6F1616U6A-EF55T come in?
The K6F1616U6A-EF55T is supplied in a 48-ball TFBGA package measuring 7.5mm by 9.5mm, according to DigiKey product listings. The ball-grid array format saves significant board area compared with legacy 44/48-pin TSOP SRAM packages and suits compact portable designs. The T suffix denotes Tape and Reel packaging; the non-T K6F1616U6A-EF55 is the tray-packaged equivalent with identical electrical specifications.
What is the difference between K6F1616U6A-EF55T and K6F1616U6A-EF55?
The only difference is packaging: the EF55T ships in Tape and Reel for automated pick-and-place, while the EF55 is supplied in trays. Both are the same 1M x16, 55ns, 2.7V to 3.3V full-CMOS static RAM die in the same 48-TFBGA (7.5 x 9.5 mm) package, so they are electrically and mechanically interchangeable on the same PCB footprint per Samsung ordering information.
What is the best drop-in replacement for K6F1616U6A-EF55T?
The closest drop-in equivalent is the tray-packaged K6F1616U6A-EF55, which uses the identical die and 48-TFBGA footprint - only the delivery format differs. Beyond that, verified cross-brand pin-compatible 1M x16 48-TFBGA SRAM equivalents are scarce in public cross-reference databases; candidates such as Cypress/Infineon or ISSI 16Mbit async SRAM must be verified ball-for-ball against the Samsung datasheet ball map before substitution.
Is there a cross-brand equivalent for K6F1616U6A-EF55T?
Public cross-reference sources retrieved for this part did not return a confirmed cross-brand pin-compatible equivalent in the same 48-TFBGA package. Functionally similar 16Mbit 3V asynchronous SRAMs exist from Infineon (Cypress), ISSI, and GigaDevice in TSOP or other BGA packages, but those are not drop-in replacements because the ball map differs. Engineers should run a ball-map comparison against the Samsung datasheet before considering any redesign-level substitute.
Does the K6F1616U6A-EF55T need refresh or a clock?
No. The K6F1616U6A-EF55T is an asynchronous full-CMOS static RAM, so it requires neither a clock signal nor periodic refresh cycles, unlike DRAM or synchronous SRAM. Data is retained as long as supply stays within the 2.7V to 3.3V range. Control is via standard chip enable, output enable, and write enable strobes, which simplifies interfacing to virtually any microcontroller or FPGA memory controller.
Is K6F1616U6A-EF55T suitable for battery-powered applications?
Yes. Samsung positions the K6F1616U6A family as a super-low-power and low-voltage full-CMOS static RAM, and its 2.7V to 3.3V supply range plus static (no-refresh) architecture make it well suited to battery-operated equipment. Full-CMOS cells draw essentially no dynamic current when the device is deselected in standby. For exact standby and operating current figures, consult the Samsung datasheet DC characteristics, as precise microamp values were not published in the distributor summary data.
Where can I download the K6F1616U6A-EF55T datasheet PDF?
The K6F1616U6A-EF55T datasheet PDF is available through aggregator sites such as AllDatasheet, which hosts the Samsung K6F1616U6A-EF55 document (9 pages, describing the 1M x16 bit super-low-power full-CMOS static RAM), and through datasheets.com. Always validate against the latest revision on Samsung Semiconductor's official product page, since aggregator copies may not include the current status-of-changes notices.
Where can I find the K6F1616U6A-EF55T pinout?
The ball map (pinout) for the K6F1616U6A-EF55T is printed in the 9-page Samsung K6F1616U6A-EF55 datasheet PDF in the 48-TFBGA ball assignment section. It includes the 20 address inputs, 16 data I/O lines, chip enable, output enable, write enable, byte-high/byte-low enables, power, and ground balls. Because this page cannot independently verify every ball position, refer to the official datasheet diagram before routing your land pattern.
K6F1616U6A-EF55T vs K6F2016U4E-EF70T - which should I choose?
These are different Samsung SRAM organizations, so the choice depends on your memory map. The K6F1616U6A-EF55T is 1M x16 with 55ns access; the K6F2016U4E-EF70T is a different organization with a slower 70ns grade. If your design needs a 16-bit wide bus and the fastest available grade in this footprint, choose the K6F1616U6A-EF55T. Choose the K6F2016 family only if your controller and density requirements match its organization - it is not pin-compatible.
What is the price of K6F1616U6A-EF55T?
Pricing for the K6F1616U6A-EF55T is quoted per quantity break from distributors such as DigiKey Marketplace (DigiKey part numbers 20500172 and 5736-K6F1616U6A-EF55TTR-ND). Exact tier prices were not published in the retrieved data as of 2026-09-01, so this page lists [DATA_NEEDED] in its price tiers rather than guessing. Request a quote for current unit pricing and stock; Tape and Reel (T suffix) minimum order quantities are typically higher than the tray version.
Where can I buy K6F1616U6A-EF55T online and is it in stock?
The K6F1616U6A-EF55T is listed on DigiKey Marketplace (multiple listings including 5736-K6F1616U6A-EF55TTR-ND) with 'ships today' availability as of the retrieved data, and is also offered by Ampheo, Xecor, and Avaq. Samsung has marked this family active, but as a mature SRAM line stock moves through marketplace sellers, so confirm live inventory at the time of order. The tray version K6F1616U6A-EF55 is an alternate sourcing route.
What is the lead time for K6F1616U6A-EF55T and is it end-of-life?
The K6F1616U6A-EF55T is currently listed as an active part by Samsung Semiconductor and DigiKey, with marketplace stock available to ship immediately, so typical lead time from stock is days rather than weeks. However, Samsung has progressively rationalized legacy SRAM lines; for volume production designs, secure a last-time-buy buffer or qualify the tray-packaged K6F1616U6A-EF55 as a second source. Contact distributors for formal factory lead time on large Tape and Reel orders.

Engineering reference data for K6F1616U6A-EF55T β€” comparison, design guidance, and compliance information.

Selection Guide

Choose the K6F1616U6A-EF55T when you need 2MB of deterministic asynchronous working memory at the fastest Samsung grade (55ns) with a 2.7V to 3.3V supply and a compact BGA footprint - typical cases are battery-powered instruments, industrial buffers, and FPGA scratchpads. Choose the tray-packaged K6F1616U6A-EF55 for prototypes or low volumes, since it is the identical die without Tape and Reel minimums. Choose Samsung's K6X0808/K6X1008 TSOP families only if your board already has a TSOP footprint and 4Mbit/8Mbit density suffices - they are not drop-in but simplify legacy migrations. Choose synchronous SRAMs such as the Micron MT58L64L32 series when burst throughput at 100MHz+ matters more than simple asynchronous control. Cross-brand 48-TFBGA equivalents must be ball-map verified against the datasheet before any redesign decision.

Comparison with Alternatives

Parameter This Product K6F1616U6A-EF55
Package 48-TFBGA (7.5 x 9.5 mm) 48-TFBGA (7.5 x 9.5 mm) - same
Brand Samsung Electronics Samsung Electronics
Memory Size 16 Mbit 16 Mbit
Organization 1M x 16 1M x 16
Access Time 55 ns 55 ns
Supply Voltage 2.7 V to 3.3 V 2.7 V to 3.3 V
Packaging / Delivery Tape & Reel (T suffix) Tray
Unit Price (qty 1) [DATA_NEEDED] [DATA_NEEDED]

Key Differentiators

  • Fastest speed grade in the family (vs K6F2016U4E-EF70T)
  • Compact ball-grid footprint (vs K6X0808C1D-GF55T)
  • Supply-chain flexibility via tray variant (vs K6F1616U6A-EF55)

Design Notes

At the 55ns access grade, bus timing is the dominant risk. Budget the full address-valid-to-data-valid delay plus output-enable access time and host setup/hold margins; avoid assuming 55ns end-to-end. Keep TFBGA escape traces under 50mm and route address/data as a loosely length-matched group. Add 0.1uF plus 10uF ceramic decoupling within 2mm of the VDD/GND ball pair, and series-terminate address lines longer than 80mm to control ringing on 3.3V CMOS edges.

The 48-TFBGA (7.5 x 9.5 mm) ball map requires a dedicated land pattern; do not reuse TSOP or other BGA footprints. Follow the Samsung datasheet land-pattern appendix for pad diameter and mask openings, and fan out with via-in-pad or dog-bone escapes as board thickness dictates. Verify the ball map directly against the official datasheet ball assignment table before release - distributor summaries do not carry per-ball detail, and pinout accuracy must come from the manufacturer document.

Estimated: an asynchronous full-CMOS SRAM at this density draws negligible average power in standby (device deselected); the main consumption occurs during access cycles. Size the 3.3V rail using the datasheet operating current at your actual cycle rate rather than worst-case datasheet maxima, and confirm exact standby/operating microamp values from the Samsung K6F1616U6A datasheet DC table, as precise values were not published in the retrieved distributor data.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown

Compliance data was not included in the retrieved distributor summaries. Verify RoHS/REACH status on the Samsung Semiconductor official product page or the distributor environmental data sheet before procurement.

Data verified on: 2026-09-01 β€” data verified and curated by XAIPART's component engineering team

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Related Components & Terms

Samsung Electronics Samsung Semiconductor K6F1616U6A-EF55T K6F1616U6A-EF55 K6F2016U4E-EF70T K6X0808C1D-GF55T asynchronous SRAM static random access memory full CMOS 1M x 16 organization 55 ns access time 48-TFBGA BGA package family surface mount Tape and Reel DigiKey Marketplace parallel memory interface battery-powered instrumentation FPGA scratchpad memory RoHS
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