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74LVTH543 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 74LVTH543
Description  Low Voltage Octal Registered Transceiver with 3-STATE Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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74LVTH543 Datasheet(HTML) 1 Page - Fairchild Semiconductor

   
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© 2000 Fairchild Semiconductor Corporation
DS012448
www.fairchildsemi.com
April 2000
Revised April 2000
74LVTH543
Low Voltage Octal Registered Transceiver
with 3-STATE Outputs
General Description
The LVTH543 octal transceiver contains two sets of D-type
latches for temporary storage of data flowing in either
direction. Separate Latch Enable and Output Enable inputs
are provided for each register to permit independent con-
trol of inputting and outputting in either direction of data
flow.
The LVTH543 data inputs include bushold, eliminating the
need for external pull-up resistors to hold unused inputs.
This octal registered transceiver is designed for low-volt-
age (3.3V) VCC applications, but with the capability to pro-
vide a TTL interface to a 5V environment. The LVTH543 is
fabricated with an advanced BiCMOS technology to
achieve high speed operation similar to 5V ABT while
maintaining a low power dissipation.
Features
s Input and output interface capability to systems at
5V VCC
s Bushold data inputs eliminate the need for external pull-
up resistors to hold unused inputs
s Live insertion/extraction permitted
s Power Up/Down high impedance provides glitch-free
bus loading
s Outputs source/sink
−32 mA/+64 mA
s Functionally compatible with the 74 series 543
s Latch-up performance exceeds 500 mA
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Order Number
Package Number
Package Description
74LVTH543WM
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
74LVTH543MTC
MTC24
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
OEAB, OEBA
Output Enable Inputs
LEAB, LEBA
Latch Enable Inputs
CEAB, CEBA
Chip Enable Inputs
A0–A7
Side A Inputs or
3-STATE Outputs
B0–B7
Side B Inputs or
3-STATE Outputs


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