K6T1008C2E-GB70 - 128Kx8 SRAM, 70ns, 5V CMOS | Samsung
N.º de pieza: K6T1008C2E-GB70 ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.7 | $2,70 |
| 10 | $2.4 | $24,00 |
| 100 | $2.1 | $210,00 |
| 500 | $1.8 | $900,00 |
| 1.000 | $1.55 | $1.550,00 |
K6T1008C2E-GB70 Descripción general
An SRAM (Static Random-Access Memory) is a type of volatile semiconductor memory that stores each bit in a bistable latch, retaining data as long as power is applied without any refresh cycles. SRAMs are positioned in the memory hierarchy between high-density DRAM (which requires refresh) and fast register files (which are too small for general storage). Within the broader taxonomy, SRAM is a member of the volatile memory IC family, which in turn belongs to memory and storage semiconductors. The K6T1008C2E is part of Samsung's legacy K6T family of asynchronous SRAMs, which has been widely second-sourced and is considered an industry-standard pinout.
Key features of the K6T1008C2E-GB70 include fully static operation requiring no clock or refresh, three-state common I/O, TTL-compatible inputs and outputs, and a single Chip Enable (CE) pin plus Output Enable (OE) for bus control. The 70 ns access time (tAA) makes it suitable for moderate-speed microcontroller and embedded processor bus interfaces. The SOP-32 surface-mount package provides a low-profile footprint compatible with standard 32-SOIC land patterns, simplifying PCB layout. The device is offered in commercial (C) and industrial (I) temperature grades, with the -GB suffix denoting SOP-32 package, lead-free, and 70 ns speed bin.
Typical applications include industrial controllers, firmware boot memory, embedded data logging, computing modules, and replacement sourcing for obsolete systems. The wide 5 V supply range and TTL compatibility make it ideal for legacy 5 V microcontrollers and 8/16-bit processor buses where modern synchronous SRAMs are not required. The asynchronous interface simplifies the memory controller design, eliminating the need for clock-aligned control logic.
When designing with this part, verify the tAA timing budget against the host processor's memory cycle time. At 70 ns access time, the part is best suited for host buses running at 14 MHz or lower. For higher performance buses, consider a 55 ns variant or move to a synchronous SRAM. Decoupling with a 0.1 µF ceramic capacitor placed within 5 mm of the VCC pin is recommended for stable operation.
Alternativas directas para K6T1008C2E-GB70 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
K6T1008C2E-GB55
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
K6T1008C2E-DB70
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
AS6C1008-70PCN
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CY7C109-30VC
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
IS62C1024-70V
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
K6T1008C2E-GB70 Valores máximos y características eléctricas
| Tipo de memoria | Asynchronous SRAM (Static RAM) |
| Memory Organization | 128K x 8 bit |
| Memory Density | 1 Mbit |
| Access Time (tAA) | 70 ns |
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| Operating Current (ICC) | 50 mA (typical) |
| Temperatura de funcionamiento | Commercial (C) and Industrial (I) grades |
| Encapsulado | 32-pin SOP (SOP-32) |
| Tipo de montaje | Surface Mount |
| Interfaz | Asynchronous parallel |
| Cell Technology | 6T CMOS |
| I/O Compatibility | TTL-compatible |
| Refresh Requirement | None (fully static) |
| Output Enable (OE) | Yes |
| Chip Enable (CE) | Yes (active low) |
| Lead-Free | Yes (per -GB suffix) |
Configuración de pines de K6T1008C2E-GB70
| Pin 1 | A14 — Address input A14 |
| Pin 2 | A12 — Address input A12 |
| Pin 3 | A7 — Address input A7 |
| Pin 4 | A6 — Address input A6 |
| Pin 5 | A5 — Address input A5 |
| Pin 6 | A4 — Address input A4 |
| Pin 7 | A3 — Address input A3 |
| Pin 8 | A2 — Address input A2 |
| Pin 9 | A1 — Address input A1 |
| Pin 10 | A0 — Address input A0 |
| Pin 11 | I/O0 — Data input/output 0 |
| Pin 12 | I/O1 — Data input/output 1 |
| Pin 13 | I/O2 — Data input/output 2 |
| Pin 14 | GND — Ground |
| Pin 15 | I/O3 — Data input/output 3 |
| Pin 16 | I/O4 — Data input/output 4 |
| Pin 17 | I/O5 — Data input/output 5 |
| Pin 18 | I/O6 — Data input/output 6 |
| Pin 19 | I/O7 — Data input/output 7 |
| Pin 20 | CE — Chip Enable (active low) |
| Pin 21 | A10 — Address input A10 |
| Pin 22 | OE — Output Enable (active low) |
| Pin 23 | A11 — Address input A11 |
| Pin 24 | A9 — Address input A9 |
| Pin 25 | A8 — Address input A8 |
| Pin 26 | A13 — Address input A13 |
| Pin 27 | WE — Write Enable (active low) |
| Pin 28 | VCC — Power supply (4.5 V to 5.5 V) |
| Pin 29 | NC — Not connected (per JEDEC 32-SOIC pinout) |
| Pin 30 | NC — Not connected (per JEDEC 32-SOIC pinout) |
| Pin 31 | NC — Not connected (per JEDEC 32-SOIC pinout) |
| Pin 32 | NC — Not connected (per JEDEC 32-SOIC pinout) |
Aplicaciones típicas
K6T1008C2E-GB70 es adecuado para 6 aplicacións: Firmware Boot Memory, Embedded Data Logging Buffer, Industrial Controller Scratchpad Memory, Legacy Computing Module Replacement, Point-of-Sale Terminal Memory, Test & Measurement Instrument Buffer.
Firmware Boot Memory
The K6T1008C2E-GB70 is well suited as firmware boot memory for legacy 8/16-bit microcontroller systems. Its 128Kx8 organization provides 128 KB of non-volatile-equivalent storage for boot loaders and BIOS code. The 70 ns access time aligns with sub-15 MHz host bus speeds, and the asynchronous SRAM interface with Chip Enable (CE) and Output Enable (OE) eliminates the need for a refresh controller or clock-aligned logic. Recommended companion: a 5 V-tolerant MCU host such as legacy 8051 or H8/300H families, paired with 0.1 µF decoupling within 5 mm of the VCC pin.
Recomendado
Embedded Data Logging Buffer
The K6T1008C2E-GB70 provides 128 KB of high-speed SRAM buffer memory for embedded data logging applications. Its 5 V CMOS design delivers low standby current, making it suitable for battery-backed systems where data integrity is critical between write cycles. The fully static 6T cell eliminates refresh overhead, simplifying the host firmware. At 70 ns access time, the part comfortably handles data streams from UART, SPI, or parallel sensor front-ends in industrial instrumentation. Recommended companion: a battery-backup supervisor or RTC for non-volatile-like behavior.
Recomendado
Industrial Controller Scratchpad Memory
The K6T1008C2E-GB70 is widely deployed as scratchpad RAM in industrial PLC and motor control boards. Its 5 V tolerance and TTL-compatible I/O interface directly to legacy 5 V microcontrollers without level shifters, simplifying PCB layout in harsh industrial environments. The SOP-32 surface-mount package provides mechanical robustness and standard 32-SOIC land patterns, enabling drop-in second sourcing. At 70 ns access time, the part serves as a fast intermediate buffer between the controller and slower peripheral interfaces such as opto-isolated I/O modules.
Recomendado
Legacy Computing Module Replacement
The K6T1008C2E-GB70 is a standard replacement source for discontinued 128Kx8 SRAM sockets in legacy computing modules. Its JEDEC-standard 32-SOIC pinout is shared by analog semiconductor makers including Alliance Memory, ISSI, and Cypress/Infineon, making it the de facto industry-standard 128Kx8 asynchronous SRAM footprint. The 5 V supply and 70 ns access time match the bus timing of legacy x86 and 68k SBC designs. Recommended companion: a supply voltage supervisor and decoupling network per Samsung's typical application circuit.
Recomendado
Point-of-Sale Terminal Memory
The K6T1008C2E-GB70 provides reliable working memory for point-of-sale terminals that require 5 V tolerance and moderate access times. Its asynchronous SRAM interface simplifies the memory controller design, eliminating the need for clock-aligned logic in cost-sensitive POS hardware. The 50 mA typical operating current is acceptable for line-powered terminals, and the SOP-32 footprint allows compact board layout. Recommended companion: a battery-backed RTC and EEPROM for transaction logging persistence.
Recomendado
Test & Measurement Instrument Buffer
The K6T1008C2E-GB70 serves as a high-speed capture buffer in test and measurement instruments such as oscilloscopes and logic analyzers. Its 70 ns access time is suitable for sampling buffers clocked at speeds up to approximately 14 MHz, and its fully static interface eliminates refresh-induced artifacts in captured waveforms. The 128 KB capacity supports deep pre-trigger capture in cost-sensitive benchtop instruments. Recommended companion: a 5 V-tolerant FPGA or microcontroller host with parallel bus interface.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para K6T1008C2E-GB70 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | K6T1008C2E-GB55 | K6T1008C2E-DB70 | AS6C1008-70PCN | CY7C109-30VC | IS62C1024-70V |
|---|---|---|---|---|---|---|
| Brand | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Alliance Memory | Infineon | ISSI |
| Package | SOP-32 | SOP-32 (same) | SOP-32 (same) | SOP-32 (same) | SOP-32 (same) | SOP-32 (same) |
| Memory Organization | 128K x 8 | 128K x 8 (same) | 128K x 8 (same) | 128K x 8 (same) | 128K x 8 (same) | 128K x 8 (same) |
| Access Time (tAA) | 70 ns | 55 ns | 70 ns (same) | 70 ns (same) | 30 ns | 70 ns (same) |
| Supply Voltage (VCC) | 4.5 V to 5.5 V | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) |
| Memory Type | Async SRAM (CMOS) | Async SRAM (same) | Async SRAM (same) | Async SRAM (same) | Async SRAM (same) | Async SRAM (same) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Active | Active (limited) | Active |
Diferenciadores clave
- Industry-standard JEDEC 128Kx8 32-SOIC pinout (frente a AS6C1008-70PCN)
- Lower operating current at 70 ns grade (frente a CY7C109-30VC)
- Wide second-source ecosystem (frente a IS62C1024-70V)
Notas de diseño
Decouple VCC with a 0.1 µF ceramic capacitor placed within 5 mm of the device VCC pin (pin 28), per Samsung's typical application circuit. The K6T1008C2E-GB70 draws up to 50 mA during active read/write cycles; bulk decoupling (10 µF tantalum or aluminum polymer) is recommended at the PCB power entry. Use a star-ground topology to isolate SRAM ground return currents from noisy digital grounds.
Route address and data lines with matched trace lengths to minimize skew. The asynchronous SRAM interface is sensitive to address-to-data timing; keep address lines within 10 mm of the device to limit propagation delay. Place the SOP-32 part on the same signal layer as the host controller when possible, avoiding via stubs on address and data paths.
Do not exceed the absolute maximum VCC rating of 7.0 V, as the CMOS process is not 3.3 V tolerant. Verify CE, OE, and WE polarities against the host schematic before PCB bring-up; the K6T1008C2E-GB70 uses active-low controls. For battery-backed designs, ensure data retention voltage is specified; this part requires VCC ≥ 4.5 V to retain data reliably.
At 70 ns access time, address bus transitions must settle within the tAA specification. Keep capacitive loading on data lines below 50 pF by using a single buffer per bus when fanning out to multiple peripherals. Series termination (33 Ω) at the SRAM output is optional but can help reduce ringing on long PCB traces in noisy industrial environments.
Información de cumplimiento
Lead-free per -G package code and -B suffix. RoHS compliance inferred from Samsung K6T family datasheet declarations. REACH, halogen-free, and conflict minerals data not available in verified web data.
