IDT74ALVCH16245PA8 [IDT]

Bus Transceiver, ALVC/VCX/A Series, 2-Func, 8-Bit, True Output, CMOS, PDSO48, TSSOP-48;


型号：	IDT74ALVCH16245PA8
厂家：	INTEGRATED DEVICE TECHNOLOGY
描述：	Bus Transceiver, ALVC/VCX/A Series, 2-Func, 8-Bit, True Output, CMOS, PDSO48, TSSOP-48 光电二极管逻辑集成电路
文件：	总6页 (文件大小：130K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IDT74ALVCH16245

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

EXTENDED COMMERCIAL TEMPERATURE RANGE

3.3V CMOS 16-BIT BUS

TRANSCEIVER WITH

IDT74ALVCH16245

3-STATE OUTPUTS

AND BUS-HOLD

DESCRIPTION:

FEATURES:

–

0.5 MICRON CMOS Technology

Typicalt^SK(0)(Output Skew) < 250ps

This 16-bit bus transceiver is built using advanced dual metal CMOS

technology. The ALVCH16245 is designed for asynchronous commu-

nication between data buses. The control-function implementation

minimizes external timing requirements.

ESD > 2000V per MIL-STD-883, Method 3015;

> 200V using machine model (C = 200pF, R = 0)

0.635mm pitch SSOP, 0.50mm pitch TSSOP,

and 0.40mm pitch TVSOP packages

Extended commercial range of – 40°C to + 85°C

V^CC= 3.3V ± 0.3V, Normal Range

V^CC= 2.7V to 3.6V, Extended Range

V^CC= 2.5V ± 0.2V

CMOS power levels (0.4µW typ. static)

–

This device can be used as two 8-bit transceivers or one 16-bit

transceiver. It allows data transmission from the A bus to the B bus or

from the B bus to the A bus, depending on the logic level at the direction-

control (DIR) input. The output-enable (OE) input can be used to disable

the device so that the buses are effectively isolated.

–

Rail-to-Rail output swing for increased noise margin

The ALVCH16245 has been designed with a ±24mA output driver.

This driver is capable of driving a moderate to heavy load while

maintaining speed performance.

Drive Features for ALVCH16245:

–

High Output Drivers: ±24mA

Suitable for heavy loads

The ALVCH16245 has “bus-hold” which retains the inputs’ last state

whenever the input bus goes to a high impedance. This prevents floating

inputs and eliminates the need for pull-up/down resistors.

APPLICATIONS:

• 3.3V High Speed Systems

• 3.3V and lower voltage computing systems

Functional Block Diagram

1DIR

2DIR

1A1

2A1

1A2

2A2

2A3

1B2

1B3

2B2

1A3

2 4

1B4

2B4

2B5

2B6

1A5

2A5

2A6

1A7

1A8

2B7

2B8

2A8

1B8

EXTENDED COMMERCIAL TEMPERATURE RANGE

MARCH1999

1999 Integrated Device Technology, Inc.

DSC-4697/-

IDT74ALVCH16245

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

EXTENDED COMMERCIAL TEMPERATURE RANGE

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATING ⁽¹⁾

Symbol

Description

Terminal Voltage

Max.

Unit

(2)

VTERM

– 0.5 to + 4.6

with Respect to GND

Terminal Voltage

1DIR

1B1

1OE

(3)

VTERM

– 0.5 to

VCC + 0.5

1A1

with Respect to GND

Storage Temperature

1B2

TSTG

IOUT

IIK

– 65 to + 150

°C

1A2

GND

1A3

1A4

DC Output Current

– 50 to + 50

± 50

GND

1B3

Continuous Clamp Current,

VI < 0 or VI > VCC

Continuous Clamp Current, VO < 0

IOK

– 50

1B4

ICC

ISS

Continuous Current through

each VCC or GND

±100

V^CC

1B5

V^CC

1A5

NEW16link

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.

2. V^CCterminals.

1B6

GND

1B7

1A6

GND

1A7

1A8

2A1

SO48-1

SO48-2

SO48-3

1B8

3. All terminals except V^CC.

2B1

2B2

GND

2B3

2A2

GND

2A3

2A4

V^CC

CAPACITANCE (T^A= +25^oC, f = 1.0MHz)

Symbol

Parameter⁽¹⁾

Conditions

Typ.

Max.

Unit

CIN

Input Capacitance

VIN = 0V

2B4

COUT

CI/O

Output

Capacitance

I/O Port

VOUT = 0V

VIN = 0V

V^CC

2B5

2A5

Capacitance

NEW16link

2B6

2A6

NOTE:

1. As applicable to the device type.

GND

2B7

2B8

2A7

2A8

2OE

FUNCTION TABLE (each 8-bit section)⁽¹⁾

2DIR

Inputs

xOE

xDIR

Outputs

Bus B Data to Bus A

SSOP/

TSSOP/TVSOP

TOP VIEW

Bus A Data to Bus B

High Z State

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don’t Care

PIN DESCRIPTION

Pin Names

Description

Z = High-Impedance

xOE

xDIR

xAx

Output Enable Inputs (Active LOW)

Direction Control Inputs

Side A Inputs or 3-State Outputs⁽¹⁾

Side B Inputs or 3-State Outputs⁽¹⁾

xBx

NOTE:

1. These pins have “Bus-Hold.” All other pins are standard inputs,

outputs, or I/Os.

IDT74ALVCH16245

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

EXTENDED COMMERCIAL TEMPERATURE RANGE

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:

Operating Condition: TA = – 40°C to +85°C

Symbol

Parameter

Test Conditions

Min.

Typ.⁽¹⁾

Max.

Unit

VIH

Input HIGH Voltage Level

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

VCC = 3.6V

1.7

—

0.7

VIL

Input LOW Voltage Level

—

0.8

IIH

Input HIGH Current

VI = VCC

—

± 5

± 10

– 1.2

—

µA

IIL

Input LOW Current

VCC = 3.6V

VI = GND

VO = VCC

VO = GND

—

IOZH

IOZL

VIK

High Impedance Output Current

(3-State Output pins)

Clamp Diode Voltage

Input Hysteresis

VCC = 3.6V

—

µA

—

VCC = 2.3V, IIN = – 18mA

VCC = 3.3V

– 0.7

100

0.1

µA

ICCL

ICCH

ICCZ

∆ICC

VCC = 3.6V

VIN = GND or VCC

Quiescent Power Supply Current

Quiescent Power Supply

Current Variation

One input at VCC − 0.6V,

other inputs at VCC or GND

—

750

µA

NEW16link

NOTE:

1. Typical values are at V^CC= 3.3V, +25°C ambient.

BUS-HOLD CHARACTERISTICS

Symbol

Parameter⁽¹⁾

Test Conditions

Min.

Typ.⁽²⁾

Max.

Unit

IBHH

Bus-Hold Input Sustain Current

VCC = 3.0V

VCC = 2.3V

VCC = 3.6V

VI = 2.0V

VI = 0.8V

VI = 1.7V

VI = 0.7V

VI = 0 to 3.6V

– 75

—

µA

IBHL

– 45

—

IBHH

IBHL

Bus-Hold Input Sustain Current

Bus-Hold Input Overdrive Current

µA

—

IBHHO

IBHLO

—

± 500

µA

NEW16link

NOTES:

1. Pins with Bus-hold are identified in the pin description.

2. Typical values are at V^CC= 3.3V, +25°C ambient.

IDT74ALVCH16245

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

EXTENDED COMMERCIAL TEMPERATURE RANGE

OUTPUT DRIVE CHARACTERISTICS

Symbol

Parameter

Output HIGH Voltage

Test Conditions⁽¹⁾

IOH = – 0.1mA

Min.

Max.

Unit

VOH

VCC = 2.3V to 3.6V

VCC = 2.3V

VCC – 0.2

—

IOH = – 6mA

IOH = – 12mA

—

VCC = 2.3V

1.7

2.2

2.4

VCC = 2.7V

—

VCC = 3.0V

—

VCC = 3.0V

IOH = – 24mA

IOL = 0.1mA

IOL = 6mA

—

VOL

Output LOW Voltage

VCC = 2.3V to 3.6V

VCC = 2.3V

—

0.2

0.4

0.7

0.4

0.55

IOL = 12mA

IOL = 24mA

VCC = 2.7V

VCC = 3.0V

NEW16link

NOTE:

1. V^IHand V^ILmust be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the

appropriate V^CCrange. T^A= – 40°C to + 85°C.

OPERATING CHARACTERISTICS, T = 25 C

VCC = 2.5V ± 0.2V

VCC = 3.3V ± 0.3V

Unit

Symbol

Parameter

Power Dissipation Capacitance

Outputs enabled

Test Conditions

Typical

CPD

CL = 0pF, f = 10Mhz

CPD

Power Dissipation Capacitance

Outputs disabled

(1)

SWITCHING CHARACTERISTICS

VCC = 2.5V ± 0.2V

VCC = 2.7V

VCC = 3.3V ± 0.3V

Symbol

tPLH

Parameter

Propagation Delay

Min.

Max.

Min.

Max.

Min.

Max.

Unit

3.7

—

3.6

tPHL

xAx to xBx or xBx to xAx

Output Enable Time

xOE to xAx or xBx

tPZH

5.7

5.2

—

5.4

4.6

—

4.4

4.1

500

tPZL

tPHZ

Output Disable Time

xOE to xAx or xBx

tPLZ

(2)

tSK(o)

Output Skew

—

NOTES:

1. See test circuits and waveforms. T^A= – 40°C to + 85°C.

2. Skew between any two outputs of the same package and switching in the same direction.

IDT74ALVCH16245

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

EXTENDED COMMERCIAL TEMPERATURE RANGE

TEST CIRCUITS AND WAVEFORMS:

PROPAGATION DELAY

TEST CONDITIONS

Symbol

(1)

(2)

VCC = 3.3V±0.3V VCC = 2.7V VCC = 2.5V±0.2V

Unit

VLOAD

2 x Vcc

Vcc

SAME PHASE

INPUT TRANSITION

VIH

2.7

1.5

300

2.7

1.5

300

t^PHL

t^PLH

VOH

Vcc / 2

150

OUTPUT

VLZ

VHZ

VOL

t^PHL

t^PLH

150

VIH

OPPOSITE PHASE

INPUT TRANSITION

NEW16link

ALVC Link

TEST CIRCUITS FOR ALL OUTPUTS ENABLE AND DISABLE TIMES

V^LOAD

DISABLE

V^CC

ENABLE

V^IH

V^T

Open

GND

CONTROL

INPUT

500Ω

t^PZL

t^PLZ

V^IN

V^OUT

Pulse^{(1, 2)}

Generator

V^LOAD/2

V^T

D.U.T.

V^LOAD/2

OUTPUT

NORMALLY

LOW

SWITCH

CLOSED

V^LZ

V^OL

500Ω

t^PHZ

PZH

R^T

C^L

OUTPUT

NORMALLY

HIGH

V^OH

V^HZ

SWITCH

OPEN

V^T

ALVC Link

DEFINITIONS:

C^L= Load capacitance: includes jig and probe capacitance.

R^T= Termination resistance: should be equal to Z^OUTof the Pulse

ALVC Link

NOTE:

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

Disable-HIGH.

Generator.

NOTES:

1. Pulse Generator for All Pulses: Rate ≤ 10MHz; t^F≤ 2.5ns; t^R≤ 2.5ns.

2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.

SET-UP, HOLD, AND RELEASE TIMES

V^IH

DATA

INPUT

SWITCH POSITION

V^T

t^SU

t^H

Test

Switch

V^IH

V^T

TIMING

INPUT

Open Drain

Disable Low

Enable Low

Disable High

Enable High

All Other tests

VLOAD

t^REM

V^IH

V^T

ASYNCHRONOUS

CONTROL

GND

Open

V^IH

V^T

SYNCHRONOUS

CONTROL

t^SU

t^H

NEW16link

ALVC Link

OUTPUT SKEW - ^TSK(x)

V^IH

V^T

INPUT

PULSE WIDTH

t^PLH1

t^PHL1

V^OH

V^T

LOW-HIGH-LOW

PULSE

V^T

OUTPUT 1

t^SK(x)

V^OL

t^SK(x)

t^W

V^OH

V^T

HIGH-LOW-HIGH

PULSE

V^T

OUTPUT 2

V^OL

ALVC Link

t^PLH2

t^SK(x) = t^PLH2- t^PLH1or t^PHL2- t^PHL1

t^PHL2

ALVC Link

NOTES:

1. For t^SK(o) OUTPUT1 and OUTPUT2 are any two outputs.

2. For t^SK(b) OUTPUT1 and OUTPUT2 are in the same bank.

IDT74ALVCH16245

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

EXTENDED COMMERCIAL TEMPERATURE RANGE

ORDERINGINFORMATION

IDT

ALVC

XXX

Bus-Hold

Family Device Type Package

Temp. Range

Shrink Small Outline Package (SO48-1)

Thin Shrink Small Outline Package (SO48-2)

Thin Very Small Outline Package (SO48-3)

245

16-Bit Bus Transceiver with 3-State Outputs

Double-Density with Resistors, ±24mA

Bus-Hold

–40°C to +85°C

CORPORATE HEADQUARTERS

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for SALES:

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www.idt.com*

*To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2.

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

IDT74ALVCH16245PA8 [IDT]

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