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74LVXC164245 Fiches technique(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce 74LVXC164245
Description  16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

74LVXC164245 Fiches technique(HTML) 1 Page - National Semiconductor (TI)

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TLF12535
ADVANCE INFORMATION
March 1996
74LVXC164245
16-Bit Dual Supply Configurable Voltage
Interface Transceiver with TRI-STATE
Outputs
General Description
The LVXC164245 is a 48-pin dual-supply 16-bit configura-
ble voltage interface transceiver suited for PCMCIA and oth-
er real time configurable IO applications The VCCB pin ac-
cepts a 5V supply level The ‘‘B’’ port is a dedicated 5V port
The VCCA pin accepts a 3V-to-5V supply level The ‘‘A’’ port
is configured to track the VCCA supply level respectively A
5V level on the VCC pin will configure the IO pins at a 5V
level and a 3V VCC will configure the IO pins at a 3V level
This device will allow the VCCA voltage source pin and IO
pins on the ‘‘A’’ port to float when OE is HIGH This feature
is necessary to buffer data to and from a PCMCIA socket
that permits PCMCIA cards to be inserted and removed dur-
ing normal operation
Features
Y
Power updown high impedance provides glitch-free
bus loading
Y
Allows A port and VCCA to float simultaneously when
OE is HIGH
Y
Bidirectional interface between 5V and 3V-to-5V buses
Y
Inputs compatible with TTL level
Y
Allow dual VCC supplies power updown easily when
OE is HIGH
Y
Guaranteed simultaneous switching noise level and dy-
namic threshold performance
Y
Available in SSOP and TSSOP packages
Y
Implements patented Quiet SeriesTM EMI reduction
circuitry
Y
Flexible VCCA operating range
Y
Functionally compatible with the 74 series 16245
Logic Symbol
TLF12535 – 1
Pin Names
Description
OEn
Output Enable Input (Active Low)
TRn
TransmitReceive Input
A0–A15
Side A InputsTRI-STATE Outputs
B0–B15
Side B InputsTRI-STATE Outputs
SSOP
TSSOP JEDEC
Order Number
74LVXC164245MEA
74LVXC164245MTD
74LVXC164245MEAX
74LVXC164245MTDX
See NS Package
MS48A
MTD48
Number
Connection Diagram
Pin Assignment for
SSOP and TSSOP
TLF12535 – 2
C1996 National Semiconductor Corporation
RRD-B30M17Printed in U S A
http
www nationalcom


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