SN74SSTU32866A 具有地址奇偶校验测试的 25 位可配置寄存缓冲器
This 25-bit 1:1 or 14-bit 1:2 configurable registered buffer is designed for 1.7-V to 1.9-V VCC operation. In the 1:1 pinout configuration, only 1 device per DIMM is required to drive 9 SDRAM loads. In the 1:2 pinout configuration, 2 devices per DIMM are required to drive 18 SDRAM loads.
All inputs are SSTL_18, except the reset (RESET) and control (Cn) inputs which are LVCMOS. All outputs are edge-controlled circuits optimized for unterminated DIMM loads and meet SSTL_18 specifications, except the open-drain error (QERR) output.
The SN74SSTU32866A buffer operates from a differential clock (CLK and CLK). Data are registered at the crossing of CLK going high and CLK\ going low.
The SN74SSTU32866A buffer accepts a parity bit from the memory controller on the parity bit (PAR_IN) input, compares it with the data received on the DIMM-independent D-inputs (D2-D3, D5-D6, D8-D25 when C0 = 0 and C1 = 0; D2-D3, D5-D6, D8-D14 when C0 = 0 and C1=1; or D1-D6, D8-D13 when C0 = 1 and C1 = 1) and indicates whether a parity error has occurred on the open-drain QERR pin (active low).
|
SN74SSTU32866A |
| Voltage Nodes(V) |
1.8 |
| Vcc range(V) |
1.7 to 1.9 |
| Input Level |
SSTL_18 |
| Output Level |
SSTL_18 |
| Logic |
True |
| No. of Gates |
25 |
| Output Drive(mA) |
-8/8 |
| Static Current |
50 mA |
| tpd max(ns) |
2.15 |
| Technology Family |
SSTL |
| Rating |
Catalog |
SN74SSTU32866A 特性
- Member of the Texas Instruments Widebus+™ Family
- Pinout Optimizes DDR2 DIMM PCB Layout
- Configurable as 25-Bit 1:1 or 14-Bit 1:2 Registered Buffer
- Chip-Select Inputs Gate the Data Outputs from Changing State and Minimizes System Power Consumption
- Output Edge-Control Circuitry Minimizes Switching Noise in an Unterminated Line
- Supports SSTL_18 Data Inputs
- Differential Clock (CLK and CLK) Inputs
- Supports LVCMOS Switching Levels on the Control and RESET Inputs
- Checks Parity on DIMM-Independent Data Inputs
- Able to Cascade with a Second SN74SSTU32866A
- RESET Input Disables Differential Input Receivers, Resets All Registers, and Forces All Outputs Low, Except QERR
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
SN74SSTU32866A 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| SN74SSTU32866AGKER |
ACTIVE |
0 to 70 |
7.65 | 1ku |
LFBGA (GKE) | 96 |
1000 | LARGE T&R |
|
| SN74SSTU32866AZKER |
ACTIVE |
0 to 70 |
7.65 | 1ku |
LFBGA (ZKE) | 96 |
1000 | LARGE T&R |
|
SN74SSTU32866A 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| SN74SSTU32866AGKER |
TBD |
Call TI |
Level-3-220C-168 HR |
SN74SSTU32866AGKER |
SN74SSTU32866AGKER |
| SN74SSTU32866AZKER |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-3-260C-168 HR |
SN74SSTU32866AZKER |
SN74SSTU32866AZKER |
SN74SSTU32866A 应用技术支持与电子电路设计开发资源下载
- SN74SSTU32866A 数据资料 dataSheet 下载.PDF
- TI 德州仪器特殊逻辑产品选型与价格 . xls
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
- TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
- Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
- CMOS Power Consumption and CPD Calculation (PDF 89 KB)
- Designing With Logic (PDF 186 KB)
- Live Insertion (PDF 150 KB)
- Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
- Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)
