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PDF MC74LVXC3245 Data sheet ( Hoja de datos )
| Número de pieza | MC74LVXC3245 | |
| Descripción | Configurable Dual Supply Octal Transceiver | |
| Fabricantes | ON Semiconductor | |
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MC74LVXC3245
Configurable Dual Supply
Octal Transceiver
with 3−State Outputs for 3 V Systems
The 74LVXC3245 is a 24−pin dual−supply, octal configurable
voltage interface transceiver especially well suited for PCMCIA and
other real time configurable I/O applications. The VCCA pin accepts a
3.0 V supply level; the A port is a dedicated 3.0 V port. The VCCB pin
accepts a 3.0 V−to−5.0 V supply level. The B port is configured to
track the VCCB supply level. A 5.0 V level on the VCCB pin will
configure the I/O pins at a 5.0 V level and a 3.0 V VCCB will configure
the I/O pins at a 3.0 V level. The A port interfaces with a 3.0 V host
system and the B port to the card slots. This device will allow the
VCCB voltage source pin and I/O pins on the B 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 during
normal operation. The Transmit/Receive (T/R) input determines the
direction of data flow. Transmit (active−High) enables data from the A
port to B port. Receive (active−Low) enables data from the B port to
the A port.
Features
• Bidirectional Interface Between 3.0 V and 3.0 V/5.0 V Buses
• Control Inputs Compatible with TTL Level
• Outputs Source/Sink Up to 24 mA
• Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
• Available in SOIC and TSSOP Packages
• Flexible VCCB Operating Range
• Allows B Port and VCCB to Float Simultaneously When OE is High
• Functionally Compatible With the 74 Series 245
• These Devices are Pb−Free and are RoHS Compliant
http://onsemi.com
24
1
MARKING
DIAGRAMS
24
SOIC−24
DW SUFFIX
CASE 751E
LVXC3245
AWLYYWWG
1
24
24
1
TSSOP−24
DT SUFFIX
CASE 948H
LVXC
3245G
ALYW
1
LVXC3245 = Specific Device Code
A = Assembly Location
WL, L
= Wafer Lot
Y = Year
WW, W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
September, 2014 − Rev. 7
1
Publication Order Number:
MC74LVXC3245/D
1 page  
MC74LVXC3245
AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
TA = −40 to +85°C; CL = 50 pF
VCCA = 2.7−3.6 V
VCCB = 4.5−5.5 V
VCCA = 2.7−3.6 V
VCCB = 3.0−3.6 V
Typ
Min (Note 4) Max
Typ
Min (Note 5) Max
Unit
tPHL Propagation Delay A to B
tPLH
1.0 4.8 8.5 1.0 5.5 9.0 ns
1.0 3.9 7.0 1.0 5.2 8.5
tPHL Propagation Delay B to A
tPLH
1.0 3.8 7.0 1.0 4.4 7.5 ns
1.0 4.3 8.0 1.0 5.1 8.0
tPZL Output Enable Time OE to B
tPZH
1.0 4.7 8.5 1.0 6.0 9.5 ns
1.0 4.8 9.0 1.0 6.1 10.0
tPZL Output Enable Time OE to A
tPZH
1.0 5.9 10.0 1.0 6.4 10.5 ns
1.0 5.4 9.5 1.0 5.8 9.5
tPHZ Output Disable Time OE to B
tPLZ
1.0 4.0 8.5 1.0 6.3 10.0 ns
1.0 3.8 8.0 1.0 4.5 8.5
tPHZ Output Disable Time OE to A
tPLZ
1.0 4.6 10.0 1.0 5.2 10.0 ns
1.0 3.1 7.0 1.0 3.4 7.0
tOSHL Output to Output Skew, Data to Output
tOSLH (Note 6)
1.0 1.5
1.0 1.5 ns
4. Typical values at VCCA = 3.3 V, VCCB = 5.0 V at 25°C.
5. Typical values at VCCA = 3.3 V, VCCB = 3.3 V at 25°C.
6. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH−to−LOW (tOSHL) or LOW−to−HIGH (tOSLH); parameter
guaranteed by design.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
CIN Input Capacitance
CI/O Input/Output Capacitance
CPD Power Dissipation Capacitance
(Measured at 10 MHz)
A→B
B→A
Condition
VCCA = 3.3 V; VCCB = 5.0 V
VCCA = 3.3 V; VCCB = 5.0 V
VCCB = 5.0 V
VCCA = 3.3 V
Typical
4.5
10
50
40
Unit
pF
pF
pF
ORDERING INFORMATION
Device
Package
Shipping†
MC74LVXC3245DWRG
SOIC−24
(Pb−Free)
1000 Tape & Reel
MC74LVXC3245DTG
TSSOP−24*
(Pb−Free)
62 Units / Rail
MC74LVXC3245DTR2G
TSSOP−24*
(Pb−Free)
2500 Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
http://onsemi.com
5
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MC74LVXC3245.PDF ] | |
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