74LVXC164245 [NSC]
16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs; 16位双电源配置电压接口收发器与TRI- STATE -R输出
| 型号： | 74LVXC164245 |
| 厂家： | 
National Semiconductor |
| 描述： | 16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs |
| 文件： | 总4页 (文件大小：100K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ADVANCE INFORMATION
March 1996
74LVXC164245
16-Bit Dual Supply Configurable Voltage
Interface Transceiver with TRI-STATE Outputs
É
General Description
The LVXC164245 is a 48-pin dual-supply, 16-bit configura-
ble voltage interface transceiver suited for PCMCIA and oth-
Features
Y
Power up/down high impedance provides glitch-free
bus loading
Y
er real time configurable I/O applications. The V
pin ac-
Allows A port and V
OE is HIGH
to float simultaneously when
CCA
CCB
cepts a 5V supply level. The ‘‘B’’ port is a dedicated 5V port.
The V pin accepts a 3V-to-5V supply level. The ‘‘A’’ port
Y
Y
Y
Bidirectional interface between 5V and 3V-to-5V buses
Inputs compatible with TTL level
CCA
is configured to track the V
5V level on the V
supply level respectively. A
CCA
pin will configure the I/O pins at a 5V
CC
level and a 3V V will configure the I/O pins at a 3V level.
voltage source pin and I/O
Allow dual V
OE is HIGH
supplies power up/down easily when
CC
CC
This device will allow the V
CCA
Y
Guaranteed simultaneous switching noise level and dy-
namic threshold performance
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.
Y
Y
Available in SSOP and TSSOP packages
Implements patented Quiet SeriesTM EMI reduction
circuitry
Y
Y
Flexible V
CCA
operating range
Functionally compatible with the 74 series 16245
Logic Symbol
Connection Diagram
Pin Assignment for
SSOP and TSSOP
TL/F/12535–1
Pin Names
OE
Description
Output Enable Input (Active Low)
Transmit/Receive Input
n
T/R
n
A –A
0
Side A Inputs/TRI-STATE Outputs
Side B Inputs/TRI-STATE Outputs
15
B –B
0
15
SSOP
TSSOP JEDEC
Order Number
74LVXC164245MEA
74LVXC164245MEAX
74LVXC164245MTD
74LVXC164245MTDX
See NS Package
Number
MS48A
MTD48
TL/F/12535–2
C
1996 National Semiconductor Corporation
TL/F/12535
RRD-B30M17/Printed in U. S. A.
http://www.national.com
Functional Description
The LVXC164245 contains sixteen non-inverting bidirection-
al buffers with TRI-STATE outputs. The device is byte con-
trolled with each byte functioning identically, but indepen-
dent of the other. The control pins can be shorted together
to obtain full 16-bit operation.
Truth Tables
Inputs
Inputs
T/R
2
Outputs
Outputs
OE
1
T/R
OE
2
1
L
L
L
H
X
Bus B –B Data to Bus A –A
0
L
L
L
H
X
Bus B –B Data to Bus A –A
15
7
0
7
7
8
8
15
15
Bus A –A Data to Bus B –B
0
Bus A –A Data to Bus B –B
15
0
7
8
8
H
HIGH-Z State on A –A , B –B
0
H
HIGH-Z State on A –A , B –B
15 15
7
0
7
8
8
e
e
e
e
Z High Impedance
H
High Voltage Level
L
Low Voltage Level
X
Immaterial
Logic Diagrams
TL/F/12535–4
TL/F/12535–3
Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays.
http://www.national.com
2
Physical Dimensions inches (millimeters) unless otherwise noted
48-Lead Molded Shrink Small Outline Package, EIAJ
Order Number 74LVXC164245MEA or 74LVXC164245MEAX
NS Package Number MS48A
3
http://www.national.com
Physical Dimensions millimeters (Continued)
48-Lead Molded Thin Shrink Small Outline Package, JEDEC, 6.1 mm Body Width
Order Number 74LVXC164245MTD or 74LVXC164245MTDX
NS Package Number MTD48
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
National Semiconductor
Corporation
National Semiconductor
Europe
National Semiconductor
Southeast Asia
National Semiconductor
Japan Ltd.
a
Fax: 49 (0) 180-530 85 86
Fax: (852) 2376 3901
Tel: 81-3-5620-7561
Fax: 81-3-5620-6179
Americas
Tel: 1(800) 272-9959
Fax: 1(800) 737-7018
@
@
Email: europe.support nsc.com
Email: sea.support nsc.com
a
Deutsch Tel: 49 (0) 180-530 85 85
a
English Tel: 49 (0) 180-532 78 32
@
Email: support nsc.com
a
Fran3ais Tel: 49 (0) 180-532 93 58
a
Italiano Tel: 49 (0) 180-534 16 80
http://www.national.com
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
相关型号：
74LVXC164245MEA
16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs
NSC
74LVXC164245MEAX
16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs
NSC
74LVXC164245MTD
16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs
NSC
74LVXC164245MTDX
16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs
NSC
74LVXC3245
8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs
FAIRCHILD
74LVXC3245MTC
8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs
FAIRCHILD
74LVXC3245MTCX_NL
Bus Transceiver, LV/LV-A/LVX/H Series, 1-Func, 8-Bit, True Output, CMOS, PDSO24, 4.40 MM, MO-153, TSSOP-24
FAIRCHILD
74LVXC3245MTC_09
8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs
FAIRCHILD
©2020 ICPDF网 联系我们和版权申明