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IDT29FCT521DT

Integrated Device
Part Number IDT29FCT521DT
Manufacturer Integrated Device
Description MULTILEVEL PIPELINE REGISTERS
Published Apr 27, 2005
Detailed Description MULTILEVEL PIPELINE REGISTERS Integrated Device Technology, Inc. IDT29FCT520AT/BT/CT/DT IDT29FCT521AT/BT/CT/DT FEATURE...
Datasheet PDF File IDT29FCT521DT PDF File

IDT29FCT521DT
IDT29FCT521DT


Overview
MULTILEVEL PIPELINE REGISTERS Integrated Device Technology, Inc.
IDT29FCT520AT/BT/CT/DT IDT29FCT521AT/BT/CT/DT FEATURES: • • • • A, B, C and D speed grades Low input and output leakage ≤1µA (max.
) CMOS power levels True TTL input and output compatibility – VOH = 3.
3V (typ.
) – VOL = 0.
3V (typ.
) High drive outputs (-15mA IOH, 48mA IOL) Meets or exceeds JEDEC standard 18 specifications Product available in Radiation Tolerant and Radiation Enhanced versions Military product compliant to MIL-STD-883, Class B and DESC listed (dual marked) Available in DIP, SOIC, SSOP, QSOP, CERPACK and LCC packages DESCRIPTION: The IDT29FCT520AT/BT/CT/DT and IDT29FCT521AT/ BT/CT/DT each contain four 8-bit positive edge-triggered registers.
These may be operated as a dual 2-level or as a single 4-level pipeline.
A single 8-bit input is provided and any of the four registers is available at the 8-bit, 3-state output.
These devices differ only in the way data is loaded into and between the registers in 2-level operation.
The difference is illustrated in Figure 1.
In the IDT29FCT520AT/BT/CT/DT when data is entered into the first level (I = 2 or I = 1), the existing data in the first level is moved to the second level.
In the IDT29FCT521AT/BT/CT/DT, these instructions simply cause the data in the first level to be overwritten.
Transfer of data to the second level is achieved using the 4-level shift instruction (I = 0).
This transfer also causes the first level to change.
In either part I=3 is for hold.
• • • • • FUNCTIONAL BLOCK DIAGRAM D0 -D7 8 MUX I 0 ,I1 2 REGISTER CONTROL CLK 1 OCTAL REG.
A1 OCTAL REG.
B1 OCTAL REG.
A2 OCTAL REG.
B2 S0 ,S1 2 MUX OE 8 2619 drw 01 Y0 -Y7 The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES ©1994 Integrated Device Technology, Inc.
APRIL 1994 DSC-4215/4 6.
2 1 IDT29FCT520AT/BT/CT/DT, 521AT/BT/CT/DT MULTILEVEL PIPELINE REGISTERS MILITARY AND COMMERCIAL TEMPERATURE RANGES P...


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