IS42S16400J-6BL

IS42S16400J-6BL is a high‑speed static RAM (SRAM) device. It provides 64 Kibits of storage organized as 16,384 words × 4 bits (16K × 4).
Key points:
- Speed grade: -6 (about 6 ns access time).
- Architecture: asynchronous SRAM with a 4‑bit data bus (DQ0–DQ3).
- Addressing: A0–A14 select one of 16,384 words.
- Control signals: Chip Enable (CE), Output Enable (OE), and Write Enable (WE). I/O is tri‑stated when not selected.
- Power: typically a single 5V supply (check datasheet for exact voltage and temp range; variants exist for commercial/industrial ranges).
- Packaging: available in Pb‑free “BL” variants in common 32‑pin packages.
Applications:
- Caches, buffers, frame buffers, and other fast random‑access memory needs in embedded systems.
Note:
- Always consult the datasheet for exact electrical specs (Vcc range, I/O levels, leakage, temperature range) and pinout for the specific package you’re using.

IS42S16400J-6BL is a 64-Mbit synchronous DRAM with 16M×4 organization. Equivalents are other 64Mb SDRAMs with the same organization, timing and voltage from different vendors. For precise cross-references, please provide the target package (e.g., TSOP-48), voltage, and speed grade (-6ns).

IS42S16400J-6BL is a 16K × 8-bit static RAM. Key features:
- Asynchronous operation (no clock) with CE, OE, WE controls
- 6 ns access time
- Single-supply operation (typical 3.3V, with a practical 2.7–3.6V range for many variants)
- 8-bit data bus with tri-state outputs
- Fully static memory (no refresh required)
- Low standby power
- Industrial temperature range (J variant) for reliability in harsh environments
- Pb-free package options (typical 28-pin, various package types)
Applications: caches, buffers, frame buffers, and general memory expansion. For exact voltage, temperature, and package specifications, consult the datasheet.

Pin count: 54 pins (typical TSOP II package).
Function: 64 Mbit synchronous DRAM (SDRAM) device, organized as 16M x 4 (4-bit I/O). It uses standard SDRAM signals: address/bank address, CS, RAS, CAS, WE, clock, and 4 data I/O lines (DQ0–DQ3). The -6BL indicates a 6 ns speed grade with Pb-free/lead-free packaging.

- Manufacturer: Integrated Silicon Solution, Inc. (ISSI).
- Company type: A US-based fabless semiconductor company that designs and markets memory integrated circuits (DRAM, SRAM, etc.), outsourcing fabrication to foundries.

IS42S16400J-6BL is a 16K × 4-bit static RAM (3.3 V, 6 ns). Common application areas:
- On-board buffers and scratchpad RAM in microcontrollers, DSPs, and ASIC/FPGA designs
- Cache, register files, and look-up/tables for embedded systems
- Small frame buffers or graphics buffers in embedded video/GUI
- High-speed data buffering for interfaces (UART, SPI, I2C, networking) and simple FIFOs
- General-purpose RAM in consumer electronics, automotive, and industrial equipment requiring fast, small SRAM.

TSOP II plastic package (54-pin).