IDT74ALVCH16270 Просмотр технического описания (PDF) - Integrated Device Technology

Номер в каталоге

Компоненты Описание

производитель

IDT74ALVCH16270

3.3V CMOS 12-BIT TO 24-BIT REGISTERED BUS EXCHANGER WITH 3-STATE OUTPUTS AND BUS-HOLD

Integrated Device Technology 

IDT74ALVCH16270

3.3V CMOS 12-BIT TO 24-BIT REGISTERED BUS EXCHANGER

INDUSTRIAL TEMPERATURE RANGE

PIN DESCRIPTION

Pin Names I/O Description

Ax(1:12) I/O Bidirectional Data Port A. Usually connected to the CPU’s Address/Data bus.(1)

1Bx(1:12) I/O Bidirectional Data Port 1B. Usually connected to the even path or even bank of memory.(1)

2Bx(1:12) I/O Bidirectional Data Port 2B. Usually connected to the odd path or odd bank of memory.(1)

CLK

I Clock Input

CLKENA1 I Clock Enable Input for the A-1B Register. If CLKENA1 is LOW during the rising edge of CLK, data will be clocked into register A-1B (Active LOW).

CLKENA2 I Clock Enable Input for the A-2B Register. If CLKENA2 is LOW during the rising edge of CLK, data will be clocked into register A-2B (Active LOW).

CLKEN1B I Clock Enable Input for the 1B-A Register. If CLKEN1B is LOW during the rising edge of CLK, data will be clocked into register 1B-A (Active LOW).

CLKEN2B I Clock Enable Input for the 2B-A Register. If CLKEN2B is LOW during the rising edge of CLK, data will be clocked into register 2B-A (Active LOW).

SEL

I 1B or 2B Port Selection. When HIGH during the rising edge of CLK, SEL enables data transfer from 1B Port to A Port. When LOW during the rising

edge of CLK, SEL enables data transfer from 2B Port to A Port.

OEA

I Synchronous Output Enable for A Port (Active LOW)

OEB

I Synchronous Output Enable for B Port (Active LOW)

NOTE:

1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.

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

1.7

—

—

V

VCC = 2.7V to 3.6V

2

—

—

VIL

Input LOW Voltage Level

VCC = 2.3V to 2.7V

—

—

0.7

V

VCC = 2.7V to 3.6V

—

—

0.8

IIH

Input HIGH Current

VCC = 3.6V

VI = VCC

—

—

±5

µA

IIL

Input LOW Current

VCC = 3.6V

VI = GND

—

—

±5

µA

IOZH

High Impedance Output Current VCC = 3.6V

VO = VCC

—

—

±10

µA

IOZL

(3-State Output pins)

VO = GND

—

—

±10

VIK

Clamp Diode Voltage

VCC = 2.3V, IIN = –18mA

—

–0.7

–1.2

V

VH

Input Hysteresis

ICCL

Quiescent Power Supply Current

ICCH

ICCZ

∆ICC

Quiescent Power Supply Current

Variation

NOTE:

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

VCC = 3.3V

VCC = 3.6V

VIN = GND or VCC

One input at VCC - 0.6V, other inputs at VCC or GND

—

100

—

mV

—

0.1

40

µA

—

—

750

µA

3

Share Link: