IDT74SSTUAE32866ABFG IDT, Integrated Device Technology Inc, IDT74SSTUAE32866ABFG Datasheet

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IDT74SSTUAE32866ABFG

Manufacturer Part Number
IDT74SSTUAE32866ABFG
Description
IC BUFFER 25BIT CONF REG 96-BGA
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet

Specifications of IDT74SSTUAE32866ABFG

Number Of Bits
25, 14
Logic Type
1:2 Configurable Registered Buffer
Supply Voltage
1.425 V ~ 1.575 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
96-BGA
Logic Family
SSTU
Logical Function
Registered Buffer
Number Of Elements
1
Number Of Inputs
25
Number Of Outputs
25
High Level Output Current
-6mA
Low Level Output Current
6mA
Propagation Delay Time
3.3ns
Clock-edge Trigger Type
Posit/Negat-Edge
Polarity
Non-Inverting
Technology
CMOS
Frequency (max)
410(Min)MHz
Mounting
Surface Mount
Pin Count
96
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74SSTUAE32866ABFG

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IDT74SSTUAE32866ABFG
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
Part Number:
IDT74SSTUAE32866ABFG8
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2
Description
This 25-bit 1:1 or 14-bit 1:2 configurable registered buffer is
designed for 1.425V to 1.575V V
The control inputs are LVCMOS. All outputs are 1.5-V
CMOS drivers that have been optimized to drive the DDR-II
DIMM load. IDT74SSTUAE32866A operates from a
differential clock (CLK and CLK). Data are registered at the
crossing of CLK going high, and CLK going low.
The C0 input controls the pinout configuration of the 1:2
pinout from A configuration (when low) to B configuration
(when high). The C1 input controls the pinout configuration
from 25-bit 1:1 (when low) to 14-bit 1:2 (when high).
A - Pair Configuration (C01 = 0, C11 = 1 and C02 = 0,
C12 = 1)
Parity that arrives one cycle after the data input to which it
applies is checked on the PAR_IN of the first register. The
second register produces to PPO and QERR signals. The
QERR of the first register is left floating. The valid error
information is latched on the QERR output of the second
register. If an error occurs QERR is latched low for two
cycles or until RESET is low.
B - Single Configuration (C0 = 0, C1 = 0)
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 (V
addition, when RESET is low all registers are reset, and all
outputs are forced low. The LVCMOS RESET and Cn inputs
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 DDR-II 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 IDT74SSTUAE32866A must ensure that the
25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2
REF
) inputs are allowed. In
DD
operation.
1
outputs will remain low, thus ensuring no glitches on the
output.
The device monitors both DCS and CSR inputs and will
gate the Qn outputs from changing states when both DCS
and CSR inputs are high. If either DCS and CSR input is
low, the Qn outputs will function normally. The RESET input
has priority over the DCS and CSR control and will force the
outputs low. If the DCS-control functionality is not desired,
then the CSR 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. Package options
include 96-ball LFBGA (MO-205CC).
Features
Applications
Supports 1.5V V
25-bit 1:1 or 14-bit 1:2 registered buffer with parity check
functionality
Supports LVCMOS switching levels on C0, C1, and
RESET inputs
Low voltage operation: V
Available in 96-ball LFBGA package
DDR2 Memory Modules running at 1.5V V
Provides complete DDR DIMM solution with
ICS98UAE877A
Ideal for DDR2 667
DD
operation for DDR2 DIMMs
IDT74SSTUAE32866A
DD
= 1.425V to 1.575V
IDT74SSTUAE32866A
DATASHEET
DD
7120/5

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IDT74SSTUAE32866ABFG Summary of contents

Page 1

CONFIGURABLE REGISTERED BUFFER FOR DDR2 Description This 25-bit 1:1 or 14-bit 1:2 configurable registered buffer is designed for 1.425V to 1.575V V DD The control inputs are LVCMOS. All outputs are 1.5-V CMOS drivers that have been optimized to ...

Page 2

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Functional Block Diagram for 1:1 Mode (Positive Logic) RESET CLK CLK V REF DCKE DODT DCS CSR D1 NOTE: 1. Disabled in 1:1 configuration. 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 ...

Page 3

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Functional Block Diagram for 1:2 Mode (Positive Logic) RESET CLK CLK V REF DCKE DODT DCS CSR OTHER CHANNELS (D2-D6, D8-D10, D12-D13) NOTE: 1. Disabled in 1:1 configuration. 25-BIT CONFIGURABLE ...

Page 4

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Pin Configurations 14 BIT 1:2 REGISTERS DCKE PPO REF GND GND DODT GND GND ...

Page 5

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 96 Ball LFBGA Package Attributes Top Marking 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 C D ...

Page 6

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Function Table RESET DCS CSR ...

Page 7

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Parity and Standby Function Table RESET DCS CSR ...

Page 8

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Logic Diagram (1:1) G2 RESET H1 CLK J1 CLK D25 A3 REF PAR_IN G6 C0 Parity Logic Diagram for ...

Page 9

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Logic Diagram (1:2) G2 RESET H1 CLK J1 CLK D14 A3 REF PAR_IN G6 C0 Parity Logic Diagram for ...

Page 10

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Logic Diagram (1:2) G2 RESET H1 CLK J1 CLK D13 A3 REF PAR_IN G6 C0 Parity Logic Diagram for 1:2 Register - ...

Page 11

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Absolute Maximum Ratings Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these ...

Page 12

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Terminal Functions Terminal Name Characteristics GND REF CLK Differential Input CLK Differential Input C0, C1 RESET CSR, DCS D1 - D25 DODT DCKE Q1 - Q25 ...

Page 13

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Operating Characteristics The RESET and Cn inputs of the device must be held at valid levels (not floating) to ensure proper device operation. The differential inputs must not be floating unless RESET is ...

Page 14

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 DC Electrical Characteristics Over Operating Range Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70° Symbol Parameter V IK Output HIGH Voltage Output LOW ...

Page 15

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Timing Requirements Over Recommended Operating Free-Air Temperature Range Symbol Parameter f Clock Frequency CLOCK t Pulse Duration, CLK, CLK HIGH or LOW Differential Inputs Active Time ACT 2 t Differential ...

Page 16

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Output Buffer Characteristics Output edge rates over recommended operating free-air temperature range Parameter dV/dt_r dV/dt_f 1 dV/dt_∆ 1 Difference between dV/dt_r (rising edge rate) and dV/dt_f (falling edge rate). 25-BIT CONFIGURABLE REGISTERED BUFFER ...

Page 17

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing RESET DCS CSR CLK CLK t ACT ( D25 Q1 - Q25 (1) PARIN PPO (2) QERR Timing Diagram for IDT74SSTUAE32866A Used as a Single Device ...

Page 18

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing Timing Diagram for the First IDT74SSTUAE32866A Used as a Single Device RESET Held HIGH NOTE: 1.If the data is clocked in on the n clock ...

Page 19

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing RESET (1) DCS (1) CSR (1) CLK (1) CLK ( D25 Q1 - Q25 (1) PARIN PPO QERR Timing Diagram for IDT74SSTUAE32866A Used as a Single Device ...

Page 20

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing RESET DCS CSR CLK CLK t ACT ( D14 Q1 - Q14 (1) PARIN PPO (2) QERR (not used) Timing Diagram for the First IDT74SSTUAE32866A (1:2 Register-A Configuration) Device ...

Page 21

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing Timing Diagram for the First IDT74SSTUAE32866A (1:2 Register-A Configuration) Device Used in a Pair RESET NOTE: 1.If the data is clocked in on the n ...

Page 22

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing RESET (1) DCS (1) CSR (1) CLK (1) CLK ( D14 Q1 - Q14 (1) PARIN PPO QERR (not used) Timing Diagram for the First IDT74SSTUAE32866A (1:2 Register-A Configuration) ...

Page 23

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing RESET DCS CSR CLK CLK t ACT ( D14 Q1 - Q14 (1,2) PARIN PPO (not used) (3) QERR Timing Diagram for the Second IDT74SSTUAE32866A (1:2 Register-B Configuration) Device ...

Page 24

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing Timing Diagram for the Second IDT74SSTUAE32866A (1:2 Register-B Configuration) Device Used in a Pair RESET NOTES: 1.If the data is clocked in on the n ...

Page 25

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Register Timing RESET (1) DCS (1) CSR (1) CLK (1) CLK ( D14 Q1 - Q14 (1) PARIN PPO (not used) QERR Timing Diagram for the First IDT74SSTUAE32866A (1:2 Register-A Configuration) ...

Page 26

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Test Circuits and Waveforms (V DUT CLK Out CLK Inputs CLK Test Point R 100 L = Test Point Simulation Load Circuit LVCMOS RESET Input t ...

Page 27

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Test Circuits and Waveforms (V DUT Out Load Circuit: High-to-Low Slew-Rate Adjustment Output 80% 20% dv_f dt_f Voltage Waveforms: High-to-Low Slew-Rate Adjustment DUT Out ...

Page 28

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Test Circuits and Waveforms (V DUT CLK CLK Output Load Circuit: Partial-Parity-Out Voltage Waveforms Propagation Delay Times (with respect to clock inputs) LVCMOS RESET Input Output Load Circuit: Partial-Parity-Out Voltage Waveforms Propagation Delay ...

Page 29

IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Ordering Information IDT XX SSTUAE XX Family Temp. Range 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 XXX XX X Device Type Package Shipping Carrier 8 BFG 866A COMMERCIAL TEMPERATURE GRADE Tape ...

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IDT74SSTUAE32866A 25-BIT CONFIGURABLE REGISTERED BUFFER FOR DDR2 Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States ...

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