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参数资料
| 型号： | IDT74SSTUBH32865ABKG |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC BUFFER 28BIT 1:2 REG 160-BGA |
| 产品变化通告： | Product Discontinuation 09/Dec/2011 |
| 标准包装： | 119 |
| 逻辑类型： | 1:2 寄存缓冲器，带奇偶位 |
| 电源电压： | 1.7 V ~ 1.9 V |
| 位数： | 28 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 160-LFBGA |
| 供应商设备封装： | 160-CABGA（9x13） |
| 包装： | 托盘 |
| 其它名称： | 74SSTUBH32865ABKG |
DATASHEET
28-BIT 1:2 REGISTERED BUFFER FOR DDR2
IDT74SSTUBH32865A
28-BIT 1:2 REGISTERED BUFFER FOR DDR2
1
IDT74SSTUBH32865A
7103/10
Description
This 28-bit 1:2 registered buffer with parity is designed for
1.7V to 1.9V VDD operation.
All clock and data inputs are compatible with the JEDEC
standard for SSTL_18. The control inputs are LVCMOS. All
outputs are 1.8 V CMOS drivers that have been optimized
to drive the DDR2 DIMM load. The IDT74SSTUBH32865A
operates from a differential clock (CLK and CLK). Data are
registered at the crossing of CLK going high, and CLK
going low.
The device supports low-power standby operation. When
the reset input (RESET) is low, the differential input
receivers are disabled, and undriven (floating) data, clock
and reference voltage (VREF) inputs are allowed. In
addition, when RESET is low all registers are reset, and all
outputs except PTYERR are forced low. The LVCMOS
RESET input must always be held at a valid logic high or
low level.
To ensure defined outputs from the register before a stable
clock has been supplied, RESET must be held in the low
state during power up.
In the DDR2 RDIMM application, RESET is specified to be
completely asynchronous with respect to CLK and CLK.
Therefore, no timing relationship can be guaranteed
between the two. When entering reset, the register will be
cleared and the outputs will be driven low quickly, relative to
the time to disable the differential input receivers. However,
when coming out of reset, the register will become active
quickly, relative to the time to enable the differential input
receivers. As long as the data inputs are low, and the clock
is stable during the time from the low-to-high transition of
RESET until the input receivers are fully enabled, the
design of the IDT74SSTUBH32865A must ensure that the
outputs will remain low, thus ensuring no glitches on the
output.
The device monitors both DCS0 and DCS1 inputs and will
gate the Qn outputs from changing states when both DCS0
and DCS1 are high. If either DCS0 and DCS1 input is low,
the Qn outputs will function normally. The RESET input has
priority over the DCS0 and DCS1 control and will force the
Qn outputs low and the PTYERR output high. If the
DCS-control functionality is not desired, then the
CSGateEnable input can be hardwired to ground, in which
case, the setup-time requirement for DCS would be the
same as for the other D data inputs.
The IDT74SSTUBH32865A includes a parity checking
function. The IDT74SSTUBH32865A accepts a parity bit
from the memory controller at its input pin PARIN,
compares it with the data received on the D-inputs and
indicates whether a parity error has occurred on its
open-drain PTYERR pin (active LOW).
Features
Double Drive strength for heavily-loaded DIMM
applications
28-bit 1:2 registered buffer with parity check functionality
Supports SSTL_18 JEDEC specification on data inputs
and outputs
Supports LVCMOS switching levels on CSGateEN and
RESET inputs
Low voltage operation: VDD = 1.7V to 1.9V
Available in 160-ball LFBGA package
Applications
DDR2 Memory Modules
Provides complete DDR DIMM solution with
ICS98ULPA877A or IDTCSPUA877A
Ideal for DDR2 400, 533, 667, and 800
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| IDT74SSTUBH32865ABKG8 | 功能描述:IC BUFFER 28BIT 1:2 REG 160-BGA RoHS:是 类别:集成电路 (IC) >> 逻辑 - 专用逻辑 系列:- 产品变化通告:Product Discontinuation 25/Apr/2012 标准包装:1,500 系列:74SSTV 逻辑类型:DDR 的寄存缓冲器 电源电压:2.3 V ~ 2.7 V 位数:14 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:48-TFSOP（0.240"，6.10mm 宽） 供应商设备封装:48-TSSOP 包装:带卷 (TR) |
| IDT74SSTUBH32868ABKG | 功能描述:IC BUFFER 28BIT CONF DDR2 176BGA RoHS:是 类别:集成电路 (IC) >> 逻辑 - 专用逻辑 系列:- 产品变化通告:Product Discontinuation 25/Apr/2012 标准包装:1,500 系列:74SSTV 逻辑类型:DDR 的寄存缓冲器 电源电压:2.3 V ~ 2.7 V 位数:14 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:48-TFSOP（0.240"，6.10mm 宽） 供应商设备封装:48-TSSOP 包装:带卷 (TR) |
| IDT74SSTUBH32868ABKG8 | 功能描述:IC BUFFER 28BIT CONF DDR2 176BGA RoHS:是 类别:集成电路 (IC) >> 逻辑 - 专用逻辑 系列:- 产品变化通告:Product Discontinuation 25/Apr/2012 标准包装:1,500 系列:74SSTV 逻辑类型:DDR 的寄存缓冲器 电源电压:2.3 V ~ 2.7 V 位数:14 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:48-TFSOP（0.240"，6.10mm 宽） 供应商设备封装:48-TSSOP 包装:带卷 (TR) |
| IDT74SSTV16857PA | 制造商:Integrated Device Technology Inc 功能描述:SSTV SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO48 |
| IDT74SSTV16857PAG | 功能描述:IC BUFFER 14BIT SSTL I/O 48TSSOP RoHS:是 类别:集成电路 (IC) >> 逻辑 - 专用逻辑 系列:74SSTV 产品变化通告:Product Discontinuation 25/Apr/2012 标准包装:1,500 系列:74SSTV 逻辑类型:DDR 的寄存缓冲器 电源电压:2.3 V ~ 2.7 V 位数:14 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:48-TFSOP（0.240"，6.10mm 宽） 供应商设备封装:48-TSSOP 包装:带卷 (TR) |
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