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74LVXC3245MTC bảng dữ liệu(PDF) 1 Page - Fairchild Semiconductor

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nhà sản xuất  FAIRCHILD [Fairchild Semiconductor]
Trang chủ  http://www.fairchildsemi.com
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74LVXC3245MTC bảng dữ liệu(HTML) 1 Page - Fairchild Semiconductor

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© 1994 Fairchild Semiconductor Corporation
www.fairchildsemi.com
February 2009
74LVXC3245
8-Bit Dual Supply Configurable Voltage Interface
Transceiver with 3-STATE Outputs
Features
■ Bidirectional interface between 3V and 3V-to-5V buses
■ Control inputs compatible with TTL level
■ Outputs source/sink up to 24 mA
■ Guaranteed simultaneous switching noise level and
dynamic threshold performance
■ Flexible VCCB operating range
■ Allows B Port and VCCB to float simultaneously when OE
is HIGH
■ Functionally compatible with the 74 series 245
General Description
The LVXC3245 is a 24-pin dual-supply, 8-bit configurable
voltage interface transceiver suited for PCMCIA and other
real time configurable I/O applications. The VCCA pin
accepts a 3V supply level. The A Port is a dedicated 3V
port. The VCCB pin accepts a 3V-to-5V supply level. The B
Port is configured to track the VCCB supply level respec-
tively. A 5V level on the VCC pin will configure the I/O pins
at a 5V level and a 3V VCC will configure the I/O pins at a
3V level. The A Port should interface with a 3V 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.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol/s
Pin Descriptions
Connection Diagram/s
Order Number
Package Number
Package Description
74LVXC3245WM
M24B
224-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LVXC3245QSC
MQA24
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
74LVXC3245MTC
MTC24
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
OE
Output Enable Input
T/R
Transmit/Receive Input
A0–A7
Side A Inputs or 3-STATE Outputs
B0–B7
Side B Inputs or 3-STATE Outputs
■ Implements proprietary EMI reduction circuitry


Số phần tương tự - 74LVXC3245MTC_09

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