Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY29FCT520T
SCCS011A - May 1994 - Revised April 2000
Features
• Function, pinout, and drive compatible with FCT, F
Logic, and AM29520
• FCT-C speed at 6.0 ns max. (Com’l),
FCT-B speed at 7.5 ns max. (Com’l),
FCT-A speed at 14.0 ns max. (Com’l)
• Reduced V
FCT functions
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-Off disable feature
• Matched rise and fall times
• Fully compatible with TTL input and output logic levels
• ESD > 2000V
• Sink current64 mA (Com’l), 32 mA (Mil)
Source current32 mA (Com’l), 12 mA (Mil)
• Single and dual pipeline operation modes
• Multiplexed data inputs and outputs
Logic Block DiagramPin Configurations
(typically = 3.3V) versions of equivalent
OH
D
0–D7
8
Multi-Level Pipeline Register
Functional Description
The CY29FCT520T devices are multilevel 8-bit-wide pipeline
registers. The devices consist of four registers, A1, A2, B1,
and B2, which are configured by the instruction inputs I
a single 4-level pipeline or as two two-level pipelines. The
contents of any register may be read at the multiplexed output at any time by using the mux-selection controls S
S
.
1
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.
The outputs are designed with a power-off disable feature to
allow for liv e insertion of boards.
VCC=Min., IOL=32 mAMil0.30.55V
Input HIGH Voltage2.0V
Input LOW Voltage0.8V
Hysteresis
[5]
All inputs0.2V
Input Clamp Diode VoltageVCC=Min., IIN=–18 mA–0.7–1.2V
Input HIGH CurrentVCC=Max., VIN=V
CC
Input HIGH CurrentVCC=Max., VIN=2.7V±1µA
Input LOW CurrentVCC=Max., VIN=0.5V±1µA
Off State HIGH-Level Output CurrentV
Off State LOW-Level
Output Current
Output Short Circuit Current
[6]
Power-Off DisableVCC=0V, V
Max., V
CC=
VCC=Max., V
VCC=Max., V
OUT
=2.7V10µA
OUT
= 0.5V–10µA
OUT
=0.0V–60–120–225mA
OUT
=4.5V±1µA
[4]
Max.Unit
V
CC
5µA
Capacitance
ParameterDescriptionTest ConditionsTyp.
C
IN
C
OUT
Notes:
1. Unless otherwise noted, these limits are over the operating free-air temperature range.
2. Unused inputs must always be connected to an appropriate logic voltage level, preferably either V
is the “instant on” case temperature.
3. T
A
4. Typical values are at V
5. This parameter is specified but not tested.
6. Not more than oneoutput should be shorted at a time. Durationof short should notexceed one second. The useofhigh-speed test apparatus and/or sample
and hold techniquesare preferable in order tominimize internal chip heating and more accuratelyreflect operational values. Otherwiseprolongedshorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter
tests, I
[5]
[4]
Max.Unit
Input Capacitance510pF
Output Capacitance912pF
or ground.
CC
=5.0V, TA=+25˚C ambient.
CC
tests should be performed last.
OS
2
Power Supply Characteristics
ParameterDescriptionTest ConditionsTyp.
I
CC
∆I
CC
I
CCD
I
C
Notes:
7. Per TTL driven input (V
8. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
9. I
C
IC=ICC+∆ICCDHNT+I
I
CC
∆I
D
N
I
CCD
f
0
f
1
N
All currents are in milliamps and all frequencies are in megahertz.
10. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.
Quiescent Power Supply CurrentVCC=Max., VIN<0.2V, VIN>VCC–0.2V0.10.2mA
Quiescent Power Supply Current
VCC=Max., VIN=3.4V, f1=0, Outputs Open
[7]
(TTL inputs HIGH)
[9]
[8]
VCC=Max.,One InputToggling,50%DutyCycle,
Outputs Open,
V
<0.2V or VIN>VCC–0.2V
IN
OE=GND,
VCC=Max., 50% Duty Cycle, Outputs Open,
f
=10 MHz, One Bit Toggling at f1=5 MHz,
0
OE=GND, VIN<0.2V or VIN>VCC–0.2V
Dynamic Power Supply Current
Total Power Supply Current
VCC=Max., 50% Duty Cycle, Outputs Open,
f
=10 MHz, One Bit Toggling at f1=5 MHz,
0
OE=GND, VIN=3.4V or VIN=GND
VCC=Max., 50% Duty Cycle, Outputs Open,
f
=10 MHz, Eight Bits Toggling at f1=5 MHz,
0
OE=GND, VIN<0.2V or VIN>VCC–0.2V
VCC=Max., 50% Duty Cycle, Outputs Open,
f
=10 MHz, Eight Bits Toggling at f1=5 MHz,
0
OE=GND, VIN=3.4V or VIN=GND
=3.4V); all other inputs at VCC or GND.
IN
=I
QUIESCENT
= Quiescent Current with CMOS input levels
= Power Supply Current for a TTL HIGH input (VIN=3.4V)
CC
= Duty Cycle for TTL inputs HIGH
H
= Number of TTL inputs at D
T
= Dynamic Current caused by an input transition pair (HLH or LHL)
= Clock frequency for registered devices, otherwise zero
= Input signal frequency
= Number of inputs changing at f
1
+ I
INPUTS
CCD(f0
+ I
DYNAMIC
/2 + f1N1)
H
1
CY29FCT520T
[4]
Max.Unit
0.52.0mA
0.060.12mA/MHz
0.71.4mA
1.23.4mA
2.85.6
5.114.3
[10]
[10]
mA
mA
3
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