Datasheet PI29FCT2520T, PI29FCT520T, PI29FCT521T Datasheet (PERICOM)

PI29FCT520T/2520T

PI29FCT521T

Fast CMOS Multilev el Pipeline Register s

Product Features:

• PI29FCT520T and PI29FCT521T are pinout and
function compatible with IDT29FCT520/521,
QS29FCT520/521 and AMD's Am29520/521

• Four 8-bit high-speed registers

• Hold, Transfer, and load instructions

• Dual two-level or single four-level pipeline operation

• TTL input and output levels, reducing problematic
"ground bounce"

• High output drive

I

OL = 48 mA

• Extremely low static power (1 mW, typ.)

• Industrial operating temperature range: –40°C to +85°C

• FCT (2xxxT) has a 25Ω series resistor.

• Packages available:
– 24-pin 300 mil wide plastic DIP (P24)
– 24-pin 150 mil wide plastic QSOP (Q24)
– 24-pin 150 mil wide plastic TQSOP (R24)
– 24-pin 300 mil wide plastic SOIC (S24)

Logic Block Diagram

Product Description:

Pericom Semiconductor’s PI29FCT series of logic circuits are
pro-duced in the Company’s advanced 0.8 micron CMOS
technology, achieving industry leading speed grades.

The PI29FCT520T/2520T and PI29FCT521T are multilevel
pipeline registers containing four 8-bit positive triggered registers
which can be configured as a dual 2-level or a single 4-level
pipeline. These products are designed for use as temporary storage
or for storage delays in pipelined systems.

The PI29FCT521T differs from the PI29FCT520T/2520T only in
the way data is loaded into and between registers in the dual 2-level
operation. When data is entered into the first level (I = 2 or I = 1)
of the PI29FCT520T/2520T, the existing data in the first level is
moved to the second level. In the PI29FCT521T, these instructions
simply overwrite the data in the first level. Transfer of data to the
second level is achieved using the 4-level shift instruction (I = 0)
causing the first level to change. In either part, I = 3 shift
instruction puts the registers on hold.

Device models available upon request.

D

0–D7

8

0,I1

2

1

I

CLK

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REGISTER

CONTROL

MUX

OCTAL

REGISTER A1

OCTAL

REGISTER A2

0,S1

2

OE

MUX

8

Y0–Y

7

S

1

OCTAL

REGISTER B1

OCTAL

REGISTER B2

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PI29FCT520/521T/2520T

MULTILEVEL PIPELINE REGISTERS

Product Pin Configuration

CLK

GND

1

I0

2

I1

3

D0

4

D1
D2
D3
D4
D5
D6
D7

5
6
7
8
9
10

24-PIN

11
12

P24
Q24
R24
S24

24
23
22
21
20
19
18
17
16
15
14
13

Register Selection

S1 S0 Register

00 B2
01 B1
10 A2
11 A1

PI29FCT520/T2520T Data Loading

DUAL 2-LEVEL SINGLE 4-LEVEL

VCC
S0
S1
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
OE

Product Pin Description

Pin Name Description

OE Output Enable Input (Active LOW) for

3-State Output Port

CLK Clock Input. Enter data into registers on

LOW-to-HIGH transistions

I0,I1 Instruction Inputs

0,S1 Multiplexer Select. Inputs either register

S

A1, A2, B1, or B2 data to be avaialbe at the

output ports
Dx Register Inputs
Yx Register Outputs
GND Ground
VCC Power

A1

A2

B1

B2

NOTE: I = 3 FOR HOLD

PI29FCT521T Data Loading

DUAL 2-LEVEL SINGLE 4-LEVEL

A1

A2

NOTE: I = 3 FOR HOLD

B1

B2

A1

A2

B1

B2

A1

A2

B1

B2

I = 0I = 1I = 2

A1

A2

B1

B2

A1

A2

B1

B2

I = 0I = 1I = 2

2

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PI29FCT520/521T/2520T

MULTILEVEL PIPELINE REGISTERS

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

Storage Temperature .................................................................–55°C to +125°C

Ambient Temperature with Power Applied .................................-40°C to +85°C

Supply Voltage to Ground Potential (Inputs & Vcc Only) ..........–0.5V to +7.0V

Supply Voltage to Ground Potential (Outputs & D/O Only) .......–0.5V to +7.0V

DC Input Voltage ......................................................................... –0.5V to +7.0V

DC Output Current ...................................................................................120 mA

Power Dissipation......................................................................................... 0.5W

Note:

Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions above those
indicated in the operational sections of this
specification is not implied. Exposure to
absolute maximum rating conditions for
extended periods may affect reliability.

DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ± 5%)

Parame t ers Desc ript ion Test Con dit ion s

OH

V

V

V
V

I
I

OZH

I

OZL

I

V
I

OFF

I

V

Output HIGH Voltage VCC = MIN., VIN = VIH OR VILIOH = –15.0 mA 2.4 3.0 V

OL

Output LOW Voltage VCC = MIN., VIN = VIH OR V

IH

Input HIGH Voltage G uaranteed Logic HIGH Level 2.0 V

IL

Input LOW Voltage Guaranteed Logic LOW Level 0.8 V

IH

Input HIGH Current VCC = MAX.V

IL

Input LOW Current VCC = MAX.V

IL

High Impedance VCC = MAX.V
Output Current V

IK

Cla mp Di ode Voltag e VCC = MIN., IIN = –18 m A –0. 7 –1. 2 V

OS

Short Circuit Current VCC = MAX.
Power Down Disable VCC = GND, V

H

Input Hysteresis 200 mV

(3)

OUT

, V

= GN D –60 –120 m A

OUT

= 4. 5V — — 100 µA

(1)

Min. Typ

IOL = 48 m A 0.3 0.5 0 V

OL

= 12 mA (25Ω series) 0.3 0.50 V

I

IN

CC

= V

IN

= GND –1 µA

OUT

= 2. 7V 1 µA

OUT

= 0. 5V –1 µA

(2)

Max. Units

1µA

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

C
COUT Output Capacitance VOUT = 0V 8 12 pF

Notes:

1. For conditions show as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device
type.

2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

4. This parameter is determined by device characterization but is not production tested.

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(4)

Description Test Conditions Typ Max. Units

IN Input Capacitance VIN = 0V 6 10 pF

3

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PI29FCT520/521T/2520T

MULTILEVEL PIPELINE REGISTERS

Power Supply Characteristics

Parameters Description Test Conditions

I

CC Quiescent Power V CC = Max. VIN = GND or VCC 0.1 10 µA

(1)

Min. Typ

Supply Current

∆ICC Supply Current per VCC = Max. VIN = 3.4V

(3)

Input @ TTL HIGH

I

CCD Supply Current per VCC = Max., VIN = GND 0.15 0.25 mA/

Input per MHz

(4)

Outputs Open VIN = VCC MHz
OE = GND
One Input Toggling
50% Duty Cycle

I

C Total Power Supply VCC = Max., VIN = GND 1.5 3.5

Current

(5)

Outputs Open VIN = VCC
fCP = 10 MHZ
50% Duty Cycle

OE = GND V

IN = 3.4V 2.0 5.5

One Bit Toggling VIN = GND
f

I = 5 MH

50% Duty Cycle
V

CC = Max., VIN = GND 3.8 7.3

Outputs Open VIN = VCC
fCP = 10 MHZ
50% Duty Cycle

OE = GND V

IN = 3.4V 6.0 16.3

Eight Bits Toggling VIN = GND
f

I = 5 MHz

50% Duty Cycle

(2)

Max. Units

0.5 2.0 mA

(5)

mA

(5)

(5)

(5)

Notes:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable
device.

2. Typical values are at Vcc = 5.0V, +25°C ambient.

3. Per TTL driven input (V

IN = 3.4V, control inputs only); all other inputs at VCC or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply characteristics.

5. Values for these conditions are examples of the I

6. I

C =IQUIESCENT + IINPUTS + IDYNAMIC

CC formula. These limits are guAranteed but not tested.

IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)

CC = Quiescent Current

I

∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

H = Duty Cycle for TTL Inputs High

D

T = Number of TTL Inputs at DH

N
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

CP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

f
f

I = Input Frequency

N

I = Number of Inputs at fI

All currents are in milliamps and all frequencies are in megahertz.

4

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MULTILEVEL PIPELINE REGISTERS

PI29FCT520T/2520T Switching Characteristics over Operating Range

FCT520AT/2520AT FCT520BT/2520BT

Com. Com.

Min Max Min Max Unit

1.5 15.0 1.5 7.5 ns

7.0 — 5.5 — ns

Parameters Description Conditions

t
t
t
t
t

t

t

t

t
t
t
t
t

PLH
PHL
PLH
PHL
SU

H

SU

H

PZH
PZL
PHZ
PLZ
W

Propagation Delay CL = 50 pF 2.0 14.0 2.0 7.5 ns
CLK to Y

X

RL = 500
Propagation Delay 2.0 13.0 2.0 7.5 ns
S0 or S1 to Y

X

Setup Time HIGH 5.0 — 2.5 — ns

X

or LOW D

to C LK

Hold Time HIGH 2.0 — 2.0 — ns

X

or LOW D

to C LK

Setup Time HIGH 5.0 — 4.0 — ns

0

or LOW I

or I1 to C LK

Hold Time HIGH 2.0 — 2.0 — ns

0

or LOW I

or I1 to C LK
Output Enable Time 1.5 12.0 1.5 7.0 ns
OE to Y

X

Output Disable Time

(3)

OE to Yx
Clock Pulse Width

(3)

HIGH or LOW

(1)

Ω

PI29FCT520/521T/2520T

PI29FCT521T Switching Characteristics over Operating Range

FCT521AT FCT521BT

Parameters Description Conditions

t
t
t
t
t

t

t

t

t
t
t
t
t

PLH
PHL
PLH
PHL
SU

H

SU

H

PZH
PZL
PHZ
PLZ
W

Propagation Delay CL = 50 pF 2.0 14.0 2.0 7.5 ns
CLK to Y

X

RL = 500
Propagation Delay 2.0 13.0 2.0 7.5 ns
S0 or S1 to Y

X

Setup Time HIGH 5.0 — 2.5 — ns

X

or LOW D

to C LK

Hold Time HIGH 2.0 — 2.0 — ns

X

or LOW D

to C LK

Setup Time HIGH 5.0 — 4.0 — ns

0

or LOW I

or I1 to C LK

Hold Time HIGH 2.0 — 2.0 — ns

0

or LOW I

or I1 to C LK
Output Enable Time 1.5 12.0 1.5 7.0 ns
OE to Yx
Output Disable Time

(3)

OE to Yx
Clock Pulse Width

(3)

(1)

Ω

HIGH or LOW

Notes:

1. See test circuit and wave forms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

3. This parameter is guaranteed but not production tested.

Com. Com.

Min M a x Min Max Unit

1.5 15.0 1.5 7.5 ns

7.0 — 5.5 — ns

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax [phone] • http://www.pericom.com

FCT520.pm6 12/18/96, 4:44 PM5

Pericom Semiconductor Corporation

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PS2002B 12/10/96