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74LVCZ161284A Datasheet

  • 74LVCZ161284A

  • LOW VOLTAGE HIGH SPEED IEEE 1284 TRANSCEIVER WITH ERROR-FREE...

  • 442.52KB

  • 12頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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74LVCZ161284A
LOW VOLTAGE HIGH SPEED IEEE1284 TRANSCEIVER
WITH ERROR-FREE POWER-UP
I
I
I
I
I
I
I
I
I
I
I
HIGH SPEED: t
PD
= 9ns (MAX.) at V
CC
= 3V
LOW POWER DISSIPATION:
I
CC
=20碌A(chǔ) (MAX) at V
CC
=3.6V T
A
=85擄C
TTL COMPATIBLE INPUTS
V
IH
=2V (MIN) V
IL
=0.8(MAX)
OPERATING VOLTAGE RANGE:
V
CC
(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
TSSOP
ORDER CODES
PACKAGE
TSSOP
TUBE
T&R
74LVCZ161284ATTR
PIN CONNECTION
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 C
2
MOS
technology. It鈥檚 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
July 2005
1/12

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