IDT74FCT245CTQG8 [IDT]

Bus Transceiver, FCT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, GREEN, QSOP-20;


型号：	IDT74FCT245CTQG8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Bus Transceiver, FCT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, GREEN, QSOP-20 光电二极管逻辑集成电路
文件：	总7页 (文件大小：82K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

FAST CMOS OCTAL

IDT54/74FCT245T/AT/CT

BIDIRECTIONAL

TRANSCEIVER

FEATURES:

DESCRIPTION:

• Std., A, and C grades

TheIDToctalbidirectionaltransceiversarebuiltusinganadvanceddual

• Low input and output leakage ≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility:

– VOH = 3.3V (typ.)

metalCMOStechnology. TheFCT245Tisdesignedforasynchronoustwo-

waycommunicationbetweendatabuses. Thetransmit/receive(T/R)input

determines thedirectionofdataflowthroughthebidirectionaltransceiver.

Transmit (active high) enables data from A ports to B ports, and receive

(active low) from B ports to A ports. The output enable (OE) input, when

high, disables both A and B ports by placing them in high Z condition.

– VOL = 0.3V (typ.)

• High Drive outputs (-15mA IOH, 64mA IOL)

• Meets or exceeds JEDEC standard 18 specifications

• Military product compliant to MIL-STD-883, Class B and DESC

listed (dual marked)

• Power off disable outputs permit "live insertion"

• Available in the following packages:

– Industrial: SOIC, SSOP, QSOP, TSSOP

– Military: CERDIP, LCC

FUNCTIONALBLOCKDIAGRAM

T/R

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

MILITARY AND INDUSTRIAL TEMPERATURE RANGES

SEPTEMBER 2009

DSC-5510/6

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

PINCONFIGURATION

INDEX

T/R

20 19

10 11 12 13

GND

LCC

TOP VIEW

CERDIP/ SOIC/ SSOP/ QSOP/ TSSOP

TOP VIEW

ABSOLUTEMAXIMUMRATINGS⁽¹⁾

PINDESCRIPTION

Symbol

Description

Max

Unit

Pin Names

Description

(2)

VTERM

Terminal Voltage with Respect to GND

–0.5 to +7

T/R

Output Enable Inputs (Active LOW)

Transmit/Recieve Input

(3)

VTERM

Terminal Voltage with Respect to GND –0.5 to VCC+0.5

TSTG

IOUT

Storage Temperature

DC Output Current

–65 to +150

–60 to +120

° C

A0 - A7

B0 - B7

Side A Inputs or 3-State Outputs

Side B Inputs or 3-State Outputs

NOTES:

1. Stresses greater than those listed under ABSOLUTE 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. No terminal voltage may exceed

Vcc by +0.5V unless otherwise noted.

FUNCTIONTABLE⁽¹⁾

Inputs

2. Inputs and Vcc terminals only.

3. Output and I/O terminals only.

T/R

Outputs

Bus B Data to Bus A

Bus A Data to Bus B

HighZState

CAPACITANCE (TA = +25°C, F = 1.0MHz)

NOTE:

1. H = HIGH Voltage Level

X = Don’t Care

L = LOW Voltage Level

Z = High Impedance

Symbol

CIN

Parameter⁽¹⁾

Input Capacitance

Output Capacitance

Conditions

VIN = 0V

Typ.

Max. Unit

COUT

VOUT = 0V

NOTE:

1. This parameter is measured at characterization but not tested.

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE

FollowingConditionsApplyUnlessOtherwiseSpecified:

Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%; Military: TA = –55°C to +125°C, VCC = 5.0V ±10%

Symbol

VIH

Parameter

Input HIGH Level

Test Conditions⁽¹⁾

Guaranteed Logic HIGH Level

Min.

Typ.⁽²⁾

—

Max.

—

0.8

Unit

VIL

Input LOW Level

Guaranteed Logic LOW Level

VCC = Max.

—

IIH

Input HIGH Current⁽⁴⁾

Input LOW Current⁽⁴⁾

High Impedance Output Current

VI = 2.7V

VI = 0.5V

VO = 2.7V

VO = 0.5V

—

µA

IIL

VCC = Max.

—

IOZH

IOZL

VCC = Max

—

(4)

(3-State output pins)

—

Input HIGH Current⁽⁴⁾

VCC = Max., VI = VCC (Max.)

VCC = Min, IIN = -18mA

—

µA

VIK

ICC

ClampDiodeVoltage

–0.7

200

0.01

–1.2

—

Input Hysteresis

—

Quiescent Power Supply Current

VCC = Max., VIN = GND or VCC

OUTPUTDRIVECHARACTERISTICS

Symbol

Parameter

Test Conditions⁽¹⁾

Min.

Typ.⁽²⁾

Max.

Unit

VOH

OutputHIGHVoltage

VCC = Min

IOH = –6mA MIL

IOH = –8mA IND

IOH = –12mA MIL

IOH = –15mA IND

IOL = 48mA MIL

IOL = 64mA IND

2.4

3.3

—

VIN = VIH or VIL

—

VOL

IOS

OutputLOWVoltage

Short Circuit Current

VCC = Min

—

–60

0.3

0.55

–225

VIN = VIH or VIL

(3)

VCC = Max., VO = GND

–120

NOTES:

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

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

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

4. The test limit for this parameter is ±5µA at TA = –55°C.

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

POWERSUPPLYCHARACTERISTICS

Symbol

Parameter

Test Conditions⁽¹⁾

Min.

Typ.⁽²⁾

Max.

Unit

ΔICC

Quiescent Power Supply Current

TTL Inputs HIGH

VCC = Max.

VIN = 3.4V

—

0.5

(3)

ICCD

Dynamic Power Supply

Current⁽⁴⁾

VCC = Max.

Outputs Open

OE = T/R = GND

One Input Toggling

50% Duty Cycle

VIN = VCC

VIN = GND

—

0.15

0.25

mA/

MHz

Total Power Supply Current⁽⁶⁾

VCC = Max.

Outputs Open

fi = 10MHz

VIN = VCC

VIN = GND

—

1.5

1.8

3.5

4.5

50% Duty Cycle

OE = T/R = GND

One Bit Toggling

VIN = 3.4V

VIN = GND

(5)

VCC = Max.

Outputs Open

fi = 2.5MHz

VIN = VCC

VIN = GND

(5)

50% Duty Cycle

OE = T/R = GND

Eight Bits Toggling

VIN = 3.4V

VIN = GND

NOTES:

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

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 ΔICC formula. These limits are guaranteed but not tested.

6. IC = IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)

ICC = Quiescent Current

ΔICC = 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 = Output Frequency

Ni = Number of Outputs at fi

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

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE-INDUSTRIAL

74FCT245AT

74FCT245CT

Symbol

tPLH

Parameter

PropagationDelay

A to B, B to A

Condition⁽¹⁾

CL = 50pF

RL = 500Ω

Min.⁽²⁾

Max.

Min.⁽²⁾

Max.

Unit

1.5

4.6

1.5

4.1

tPHL

tPZH

tPZL

OutputEnableTime

OE to A or B

OutputDisableTime

6.2

5.8

4.8

5.8

4.8

tPHZ

tPLZ

OE to A or B

OutputEnableTime

tPZH

tPZL

6.2

(3)

T/R to A or B

tPHZ

tPLZ

OutputDisableTime

(3)

T/R to A or B

SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE-MILITARY

54FCT245T

54FCT245AT

54FCT245CT

Symbol

tPLH

Parameter

PropagationDelay

A to B, B to A

Condition⁽¹⁾

CL = 50pF

RL = 500Ω

Min.⁽²⁾

Max.

Min.⁽²⁾

Max.

Min.⁽²⁾

Max.

Unit

1.5

7.5

1.5

4.9

1.5

4.5

tPHL

tPZH

tPZL

OutputEnableTime

OE to A or B

OutputDisableTime

6.5

6.2

5.2

6.2

5.2

tPHZ

tPLZ

OE to A or B

OutputEnableTime

tPZH

tPZL

6.5

(3)

T/R to A or B

tPHZ

tPLZ

OutputDisableTime

(3)

T/R to A or B

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 tested.

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

TESTCIRCUITSANDWAVEFORMS

SWITCHPOSITION

7.0V

Test

Switch

Closed

Open

500W

Open Drain

Disable Low

Enable Low

OUT

Pulse

Generator

D.U.T

All Other Tests

50pF

500W

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.

Octal Link

Test Circuits for All Outputs

DATA

1.5V

INPUT

LOW-HIGH-LOW

tSU

1.5V

PULSE

1.5V

TIMING

INPUT

ASYNCHRONOUS CONTROL

tREM

PRESET

CLEAR

ETC.

1.5V

HIGH-LOW-HIGH

PULSE

1.5V

SYNCHRONOUS CONTROL

PRESET

1.5V

CLEAR

tSU

CLOCK ENABLE

ETC.

Pulse Width

Octal Link

Set-Up, Hold, and Release Times

ENABLE

DISABLE

1.5V

SAME PHASE

CONTROL

INPUT

1.5V

INPUT TRANSITION

PLH

PHL

PZL

tPLZ

VOH

OUTPUT

3.5V

1.5V

3.5V

1.5V

OUTPUT

NORMALLY

LOW

SWITCH

CLOSED

VOL

tPLH

0.3V

VOL

1.5V

tPZH

tPHZ

OPPOSITE PHASE

INPUT TRANSITION

VOH

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

1.5V

Octal Link

Propagation Delay

Enable and Disable Times

NOTES:

1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.

2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.

IDT54/74FCT245T/AT/CT

FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER

MILITARYANDINDUSTRIALTEMPERATURERANGES

ORDERINGINFORMATION

XXXX

FCT

Package

Process

Device Type

Temp. Range

Blank

Industrial

MIL-STD-883, Class B

Industrial Options

Small Outline IC - Green

SOG

PYG

Shrink Small Outline Package - Green

Quarter-size Small Outline Package - Green

Thin Shrink Small Outline Package - Green

PGG

Military Options

CERDIP

Leadless Chip Carrier

Fast CMOS Octal Bidirectional Transceiver

245T

245AT

245CT

55 C to +125 C

40 C to +85 C

DatasheetDocumentHistory

09/29/09 Pg. 7

Updatedthe orderinginformationbyremovingthe "IDT"notationandnonRoHSpart.

CORPORATE HEADQUARTERS

6024 Silver Creek Valley Road

San Jose, CA 95138

for SALES:

for Tech Support:

logichelp@idt.com

800-345-7015 or 408-284-8200

fax: 408-284-2775

www.idt.com

IDT74FCT245CTQG8 [IDT]

相关型号：

SI9130DB

SI9135LG-T1

SI9135LG-T1-E3

SI9135_11

SI9136_11

SI9130CG-T1-E3

SI9130LG-T1-E3

SI9130_11

SI9137

SI9137DB

SI9137LG

SI9122E