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PI74FCT2827T中文资料

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PI74FCT827/828T

(25? Series) P174FCT2827/2828T

10-BIT BUFFERS Logic Bl ock Diagram

Product Description

Pericom Semiconductor’s PI74FCT series of logic circuits are produced in the Company’s advanced 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 PI74FCT827/828T and the PI74FCT2827/2828T are 10-bit wide bus drivers providing high-performance bus interface buffering for wide address/data paths or buses carrying parity. The 10-bit buffers have NAND-ed output enables for maximum control flexibility. They are designed for high-capacitance load drive capability, while providing low-capacitance bus loading at both inputs and outputs. The PI74FCT827/2827T is a non-inverting of the PI74FCT828/2828T.

Device models available upon request.

Product Features

PI74FCT827/828/2827/2828T are pin compatible with bipolar FAST? Series at a higher speed and lower power consumption

25? 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:

– 24-pin 300-mil wide plastic DIP (P)– 24-pin 150-mil wide plastic QSOP (Q)– 24-pin 150-mil wide plastic TQSOP (R)– 24-pin 300-mil wide plastic SOIC (S)

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Fast CMOS 10-Bit Buffers

PI74FCT827T, PI74FCT828T

(25? Series) PI74FCT2827T

(25? Series) PI74FCT2828T

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242322212019181716151413

OE D0D1D2D3D4D5D6D7D8D9GND

Vcc Y0Y1Y2Y3Y4Y5Y6Y7Y8Y9OE2

Pin Name Description

OE N Output Enable Input (Active LOW)D0-D910-bit Data Inputs Y0-Y910-bit Data Outputs GND Ground V CC Power

Product Pin Description

Product Pin Configuration

Inputs Outputs Function OE1OE2D N Y N

Transparent L L L L L L H H Three-State

H X X Z X

Inputs

Outputs

Function OE 1OE 2D N Y N Transparent L L L H L L H L Three-State

H X X Z X

H = High Voltage Level L = Low Voltage Level X = Don’t Care

Z = High Impedance

PI74FCT827/2827T

Truth Tabl e (Non-Inverting)(1)

PI74FCT828/2828T

Truth Table (Inverting)(1)

24-PIN P24Q24R24S24

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not 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 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, T A = –40°C to +85°C, V CC = 5.0V ± 5%)

Parameters Description Test Conditions(1)Min.Typ(2)Max.Units V OH Output HIGH Voltage V CC = Min., V IN = V IH or V IL I OH = –15.0mA 2.4 3.0V V OL Output LOW Current V CC = Min., V IN = V IH or V IL I OL = 48mA0.30.50V V OL Output LOW Current V CC = Min., V IN = V IH or V IL I OL = 12mA (25? Series)0.30.50V V IH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0V V IL Input LOW Voltage Guaranteed Logic LOW Level0.8V

I IH Input HIGH Current V CC = Max.V IN = V CC1μA

I IL Input LOW Current V CC = Max.V IN = GND–1μA

I OZH High Impedance V CC = M AX.V OUT = 2.7V1μA

I OZL Output Current V OUT = 0.5V–1μA

V IK Clamp Diode Voltage V CC = Min., I IN = –18mA–0.7–1.2V

I OFF Power Down Disable V CC = GND, V OUT = 4.5V——100μA

I OS Short Circuit Current V CC = Max.(3), V OUT = GND–60–120mA

V H Input Hysteresis200mV

Capacitance (T A = 25°C, f = 1 MHz)

Parameters(4)Description Test Conditions Typ Max.Units

C IN Input Capacitance V IN = 0V610pF

C OUT Output Capacitance V OUT = 0V812pF 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.

Power Supply Characteristics

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

I CC Quiescent Power V CC = Max.V IN = GND0.1500μA

Supply Current or V CC

?I CC Supply Current per V CC = Max.V IN = 3.4V(3)0.5 2.0mA Input @ TTL HIGH

I CCD Supply Current per V CC = Max.,V IN = V CC0.150.25mA/

Input per MHz(4)Outputs Open V IN = GND MHz

OE1 = OE2 = GND

One Input Toggling

50% Duty Cycle

I C Total Power Supply V CC = Max.,V IN = V CC 1.5 3.5(5)mA

Current(6)Outputs Open V IN = GND

f CP = 10 MH Z

50% Duty Cycle V IN = 3.4V 1.8 4.5(5)

OE1 = OE2 = GND V IN = GND

f I = 5 MH Z

One Bit Toggling

V CC = Max.,V IN = V CC 3.0 6.0(5)

Outputs Open V IN = GND

f CP = 10 MH Z

50% Duty Cycle V IN = 3.4V 5.014.0(5)

OE1 = OE2 = GND V IN = GND

Eight Bits Toggling

f I = 2.5 MH Z

50% Duty Cycle

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 (V IN = 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.I C =I QUIESCENT + I INPUTS + I DYNAMIC

I C = I CC + ?I CC D H N T + I CCD (f CP/2 + f I N I)

I CC = Quiescent Current

?I CC = Power Supply Current for a TTL High Input (V IN = 3.4V)

D H = Duty Cycle for TTL Inputs High

N T = Number of TTL Inputs at D H

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

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

f I = Input Frequency

N I = Number of Inputs at f I

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

PI74FCT827/2827T (non-inverting) Switching Characteristics over Operating Range

827AT/2827AT827BT/2827BT 827CT/2827CT827DT

https://www.sodocs.net/doc/db14569362.html,.

Parameters Description Conditions(1)Min.Max.Min.Max.Min.Max.Min.Max.Units t PLH Propagation Delay C L = 50pF 1.5 6.5 1.5 5.0 1.5 4.4 1.5 3.8

t PHL D N to Y N R L = 500?

C L = 300pF(3) 1.515.0 1.513.0 1.510.0 1.57.5

R L = 500?

t PZH Output Enable Time C L = 50pF 1.59.5 1.58.0 1.57.0 1.5 5.0ns t PZL OE N to Y N R L = 500?

C L = 300pF(3) 1.523.0 1.515.0 1.514.0 1.59.0

R L = 500?

t PHZ Output Disable Time(3)C L = 5pF(3) 1.58.5 1.5 6.0 1.5 5.7 1.5 4.3

t PLZ OE N to Y N R L = 500?

C L = 50pF 1.510.0 1.57.0 1.5 6.0 1.5 4.3

R L = 500?

PI74FCT828/2828T (inverting) Switching Characteristics over Operating Range

828AT/2828AT828BT/2828BT828CT

https://www.sodocs.net/doc/db14569362.html,.

Parameters Description Conditions(1)Min.Max.Min.Max.Min.Max.Units t PLH Propagation Delay C L = 50 pF 1.5 6.5 1.5 5.5 1.5 4.4ns

t PHL D N to Y N R L = 500?

C L = 300 pF(3) 1.515.0 1.513.0 1.510.0ns

R L = 500?

t PZH Output Enable Time C L = 50 pF 1.59.5 1.58.0 1.57.0ns

t PZL OE N to Y N R L = 500?

C L = 300 pF(3) 1.523.0 1.515.0 1.514.0ns

R L = 500?

t PHZ Output Disable Time(3)C L = 5 pF(3) 1.58.5 1.5 6.0 1.5 5.7ns

t PLZ OE N to Y N R L = 500?

C L = 50 pF 1.510.0 1.57.0 1.5 6.0ns

R L = 500?

Notes:

1.See test circuit and waveforms.

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 ?https://www.sodocs.net/doc/db14569362.html,

PI74FCT2827T中文资料

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