PI74FCT2541ATQ - Pericom - Datasheet.Directory

1PS2011B 12/11/00

Logic Block Diagrams

PI74FCT240/2240T PI74FCT241/2241T

PI74FCT244/2244T PI74FCT540T

PI74FCT541/2541T

*Logic diagram shown for 540T.

541/2541T is the non-inverting option.

Product Description

Pericom Semiconductor’s PI74FCT series of logic circuits are

produced in the Company’s advanced 0.6/0.8 micron CMOS

technology, achieving industry leading speed grades. All

PI74FCT2XXX devices have a built-in 25 ohm series resistor on

all outputs to reduce noise because of reflections, thus eliminating

the need for an external terminating resistor.

The PI74FCT240T/241T/244T/540T/541T and P174FCT2240T/

2241T/2244/2541T are 8-bit wide driver circuits, designed to be

used in applications requiring high-speed and high-output drive.

Ideal applications would include bus drivers, memory drivers,

address drivers, and system clock drivers.

The PI74FCT540T and PI74FCT541/2541T provide similar driver

capabilities, but have their pins physically grouped by function.

All inputs are located on one side of the package, while outputs are

on the opposite side, allowing for a much simpler and denser board

layout.

Product Features

•PI74FCT240/241/244/540/541T and PI74FCT2240/2241/2244/

2541T are pin compatible with bipolar FAST™ Series at a

higher speed and lower power consumption

25Ω series resistor on all outputs (FCT2XXX only)

•TTL input and output levels

•Low ground bounce outputs

•Extremely low static power

•Hysteresis on all inputs

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

Packages available:

– 20-pin 173 mil wide plastic TSSOP (L)

– 20-pin 209 mil wide plastic SSOP (H)

– 20-pin 300 mil wide plastic DIP (P)

– 20-pin 150 mil wide plastic QSOP (Q)

– 20-pin 150 mil wide plastic TQSOP (R)

– 20-pin 300 mil wide plastic SOIC (S)

•Device models available upon request

241 Only

for 241T,

for 244T,

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Fast CMOS Octal

Buffer/Line Drivers

PI74FCT240T/241T/

244T/540T/541T (25 ohmSeries)

PI74FCT2240T/2241T/2244T/2541T

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PI74FCT240T/241T/244T/540T/541T (25 ohm Series)

PI74FCT2240T/2241T/2244T/2541T

Octal Buffer/Line Drivers

Product Pin Description

Pin Name Description

OEA, OEB 3-State Output Enable Inputs (Active LOW)

OEB(1) 3-State Output Enable Input (Active HIGH)

Dxx Inputs

Oxx Outputs

GND Ground

VCC Power

Inputs(1) Outputs(1)

OEAOEBOEB(2) D 240 241 244 540 541

LL HLHLLHL

LL HHLHHLH

H H L X ZZZZZ

Truth Table

PI74FCT540/541/2541T Product Pin Configuration

Note:

1.H = High Voltage Level, X = Don't Care, L = Low

Voltage Level, Z = High Impedance

2.OEB for 241 only.

PI74FCT241/2241/244/2244T Product Pin Configuration

PI74FCT240/2240T Product Pin Configuration

*OEB for 241T, OEB for 244T

*Ox for 540T, Ox for 541T

GND

Vcc

GND

Vcc

20-Pin

H20

L20

P20

Q20

R20

S20

20-Pin

H20

L20

P20

Q20

R20

S20

GND

Vcc

O5*

20-Pin

H20

L20

P20

Q20

R20

S20

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PI74FCT240T/241T/244T/540T/541T (25 ohm Series)

PI74FCT2240T/2241T/2244T/2541T

Octal Buffer/Line Drivers

Maximum Ratings

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

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 condi-

tions 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 = 5.0V ± 5%)

Parameters Description Test Conditions(1) Min. Typ(2) Max. Units

VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –15.0mA 2.4 3.0 V

VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 64mA 0.3 0.55 V

VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 12mA (25ΩSeries) 0.3 0.50 V

VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V

VIL Input LOW Voltage Guaranteed Logic LOW Level 0.8 V

IIH Input HIGH Current VCC = Max. VIN = VCC 1µA

IIL Input LOW Current VCC = Max. VIN = GND –1 µA

IOZH High Impedance VCC = MAX.VOUT = 2.7V 1 µA

IOZL Output Current VOUT = 0.5V –1 µA

VIK Clamp Diode Voltage V CC = Min., IIN = –18mA –0.7 –1.2 V

IOFF Power Down Disable VCC = GND, VOUT = 4.5V — — 100 µA

IOS Short Circuit Current VCC = Max.(3), VOUT = GND –60 –120 m A

VHInput Hysteresis 200 mV

Capacitance (TA = 25°C, f = 1 MHz)

Parameters(4) Description Test Conditions Typ Max. Units

CIN Input Capacitance VIN = 0V 6 10 pF

COUT Output Capacitance VOUT = 0V 8 12 pF

Notes:

1. For Max. or Min. conditions, 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.

Storage Temperature ........................................................... –65°C to +150°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 ...............................................................................120mA

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

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PI74FCT240T/241T/244T/540T/541T (25 ohm Series)

PI74FCT2240T/2241T/2244T/2541T

Octal Buffer/Line Drivers

Power Supply Characteristics

Parameters Description Test Conditions(1) Min. Typ(2) Max. Units

ICC Quiescent Power VCC = Max. VIN = GND or VCC 0.1 500 µA

Supply Current

∆ICC Supply Current per VCC = Max. VIN = 3.4V(3) 0.5 2.5 mA

Input @ TTL HIGH

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

Input per MHz(4) Outputs Open VIN = GND MHz

OEA = OEB = GND or

OEA = GND, OEB = VCC

One Bit Toggling

50% Duty Cycle

ICTotal Power Supply VCC = Max., VIN = VCC 1.5 3.5(5) mA

Current(6) Outputs Open VIN = GND

fI = 10 MHZ

50% Duty Cycle

OEA = OEB = GND or VIN = 3.4V 1.8 4.5(5)

OEA = GND, OEB = VCC VIN = GND

One Bit Toggling

VCC = Max., VIN = VCC 3.0 6.0(5)

Outputs Open VIN = GND

fI = 2.5 MHZ

50% Duty Cycle

OEA = OEB = GND or VIN = 3.4V 5.0 14.0(5)

OEA = GND, OEB = VCC VIN = GND

Eight Bits Toggling

Notes:

1. For Max. or Min. conditions, 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 (VIN = 3.4V); all other inputs at Vcc or GND.

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

5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.

6. IC = IQUIESCENT + IINPUTS + IDYNAMIC

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

ICC = Quiescent Current

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

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

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

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

fI = Input Frequency

NI = Number of Inputs at fI

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

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PI74FCT240T/241T/244T/540T/541T (25 ohm Series)

PI74FCT2240T/2241T/2244T/2541T

Octal Buffer/Line Drivers

PI74FCT240/2240T Switching Characteristics over Operating Range

240T/2240T 240AT/2240AT 240CT/2240CT 240DT

Com. Com. Com. Com.

Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Units

tPLH Propagation Delay CL = 50pF 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 ns

tPHL DN to ONRL = 500Ω

tPZH Output Enable Time 1.5 10.0 1.5 6.2 1.5 5.8 1.5 4.8 ns

tPZL OEX to ON

tPHZ Output Disable Time(3) 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 ns

tPLZ OEX to ON

PI74FCT241/2241T Switching Characteristics over Operating Range

241T/2241T 241AT/2241AT 241CT/2241CT 241DT

Com. Com. Com. Com.

Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Units

tPLH Propagation Delay CL = 50pF 1.5 6.5 1.5 4.8 1.5 4.1 1.5 3.6 ns

tPHL DN to ONRL = 500Ω

tPZH Output Enable Time 1.5 8.0 1. 5 6.2 1.5 5.8 1.5 4. 8 ns

tPZL OEA/OEB to ON

tPHZ Output Disable Time(3) 1.5 7.0 1.5 5.6 1.5 5.2 1.5 4.0 ns

tPLZ OEA/OEB to ON

PI74FCT244/2244T Switching Characteristics over Operating Range

244T/2244T 244AT/2244AT 244CT/2244CT 244DT

Com. Com. Com. Com.

Parameters Description Conditions(1) Min Max Min Max Min Max Min Max

Units

tPLH Propagation Delay CL = 50pF 1.5 6.5 1.5 4.8 1.5 4.1 1.5 3.6 ns

tPHL DN to ONRL = 500Ω

tPZH Output Enable Time 1.5 8.0 1. 5 6.2 1.5 5.8 1.5 4. 8 ns

tPZL OEX to ON

tPHZ Output Disable Time(3) 1.5 7.0 1.5 5.6 1.5 5.2 1.5 4.0 ns

tPLZ OEX to ON

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.

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PI74FCT240T/241T/244T/540T/541T (25 ohm Series)

PI74FCT2240T/2241T/2244T/2541T

Octal Buffer/Line Drivers

PI74FCT540T Switching Characteristics over Operating Range

540T 540AT 540CT 540DT

Com. Com. Com. Com.

Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Units

tPLH Propagation Delay CL = 50pF 1.5 5.5 1.5 4.8 1.5 4.3 1.5 3.8 ns

tPHL DN to ONRL = 500Ω

tPZH Output Enable Time 1.5 10.0 1.5 6.2 1.5 5.8 1.5 5.2 ns

tPZL OEX to ON

tPHZ Output Disable Time(3) 1.5 6.0 1.5 5.6 1.5 5.2 1.5 5.2 ns

tPLZ OEX to ON

PI74FCT541/2541T Switching Characteristics over Operating Range

541T/2541T 541AT/2541AT 541CT/2541CT 541DT

Com. Com. Com. Com.

Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Units

tPLH Propagation Delay CL = 5 0 pF 1.5 6.0 1.5 4.8 1.5 4.1 1.5 3.8 ns

tPHL DN to ONRL = 500Ω

tPZH Output Enable Time 1 . 5 9. 5 1. 5 6 .2 1 .5 5 . 8 1 . 5 5. 2 ns

tPZL OEX to ON

tPHZ Output Disable Time(3) 1.5 6.5 1.5 5.6 1.5 5.2 1.5 5.2 ns

tPLZ OEX to ON

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.

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com