74LVCZ161284ATTR集成电路（IC）的专用逻辑器件规格书PDF中文资料

74LVCZ161284ATTR属于集成电路（IC）的专用逻辑器件。由意法半导体集团制造生产的74LVCZ161284ATTR专用逻辑器件专用逻辑 IC 设计提供应用特定的逻辑输出类型，例如 BCD 速率倍增、可寻址扫描端口、总线终端阵列、CML 驱动器、比较器、ABT 扫描测试、二进制全加法器、互补对加逆变器、可配置缓冲器、触点颤动消除器、晶体振荡器、延迟元件、差分接收器、LVTTL 到 GTLP 收发器、存储器解码器、电源良好检测器和分频器。

DESCRIPTION

The 74LVCZ161284A contains eight high speed

non inverting bidirectional buffers and eleven

control/status non-inverting buffers with open

drain outputs fabricated in silicon gate C2MOS

technology. It’s intended to provide a standard

signaling method for a bi-direction parallel

peripheral in an Extended Capabilities Port Mode

(ECP). The HD (Active HIGH) input pin enables

the Cable port to switch from Open Drain to a high

drive totem pole output, capable of sourcing 14mA

on all thirteen buffer and 84mA on PERI LOGIC

OUTPUT buffer. The DIR input determines the

direction of data flow on the bidirectional buffers.

DIR (Active HIGH) enables data flow from A port

to B port. DIR (Active LOW) enables data flow

from B port to A port. The Y output (Y9-Y13) stay

in the high state after power-on until an associated

input A9-A13) goes high. When an associated

input goes high, all Y outputs are active, and non

inverting signals of the associated inputs are

driven through Y outputs. This special feature

prevents printer system errors caused by

deasserting the BUSY signal in the cable at

power-on.

It is available in the commercial temperature

range.

■ HIGH SPEED: tPD = 9ns (MAX.) at VCC = 3V

■ LOW POWER DISSIPATION:

ICC=20µA (MAX) at VCC=3.6V TA=85°C

■ TTL COMPATIBLE INPUTS

VIH=2V (MIN) VIL=0.8(MAX)

■ OPERATING VOLTAGE RANGE:

VCC(OPR) = 3.0V to 3.6V

■ A PORT HAVE STANDARD 4mA TOTEM

POLE OUTPUT

■ B PORT HIGH DRIVE SOURCE/SINK

CAPABILITY OF 14mA

■ AUTO POWER-UP FEATURE TO PREVENT

PRINTER ERRORS

■ SUPPORT IEEE STD 1284-I (LEVEL 1 TYPE)

AND IEEE STD 1284-II (LEVEL 2 TYPE) FOR

BIDIRECTIONAL PARALLEL

COMMUNICATIONS BETWEEN PERSONAL

COMPUTER ANT PRINTING PERIPHERALS

■ TRANSLATION CAPABILITY ALLOW

OUTPUTS ON CABLE SIDE TO INTERFACE

WITH 5V SIGNAL

■ PULL-UP RESISTOR INTEGRATED ON ALL

OPEN-DRAIN OUTPUT ELIMINATE THE

NEED FOR DISCRETE RESISTOR

■ REPLACE THE FUNCTION OF TWO

74LVC1284 DEVICES