CY29FCT520T_17 Datasheet, PDF (1/12 Pages) Texas Instruments – MULTILEVEL PIPELINE REGISTER WITH 3-STATE OUTPUTS

D Function, Pinout, and Drive Compatible
With FCT, F Logic, and AM29520
D Reduced V_OH (Typically = 3.3 V) Version of
Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D I_off Supports Partial-Power-Down Mode
Operation
D Matched Rise and Fall Times
D Fully Compatible With TTL Input and
Output Logic Levels
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D Single- and Dual-Pipeline Operation Modes
D Multiplexed Data Inputs and Outputs
D CY29FCT520T
– 64-mA Output Sink Current
32-mA Output Source Current
D CY29FCT520ATDMB, CY29FCT520BTDMB
– 32-mA Output Sink Current
12-mA Output Source Current
D 3-State Outputs
CY29FCT520T
MULTILEVEL PIPELINE REGISTER
WITH 3-STATE OUTPUTS
SCCS011C – MAY 1994 – REVISED NOVEMBER 2001
D, P, OR SO PACKAGE
(TOP VIEW)
I₀ 1
I₁ 2
D₀ 3
D₁ 4
D₂ 5
D₃ 6
D₄ 7
D₅ 8
D₆ 9
D₇ 10
CLK 11
GND 12
24 ^V_CC
23 ^S₀
22 ^S₁
21 Y₀
20 Y₁
19 Y₂
18 Y₃
17 Y₄
16 Y₅
15 Y₆
14 Y₇
13 OE
description
The CY29FCT520T is a multilevel 8-bit-wide pipeline register. The device consists of four registers, A1, A2, B1,
and B2, which are configured by the instruction inputs I₀, I₁ as a single four-level pipeline or as two two-level
pipelines. The contents of any register can be read at the multiplexed output at any time by using the
multiplex-selection controls (S₀ and S₁).
The pipeline registers are positive-edge triggered, and data is shifted by the rising edge of the clock input.
Instruction I = 0 selects the four-level pipeline mode. Instruction I = 1 selects the two-level B pipeline, while I = 2
selects the two-level A pipeline. I = 3 is the hold instruction; no shifting is performed by the clock in this mode.
In the two-level operation mode, data is shifted from level 1 to level 2 and new data is loaded into level 1.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2001, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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