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74LVT16652 Datasheet

  • 74LVT16652

  • 3.3V ABT 16-Bit Transceiver/Register with TRI-STATE Outputs

  • 129.33KB

  • 7頁

  • NSC

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74LVT16652 3 3V ABT 16-Bit Transceiver Register with TRI-STATE Outputs
ADVANCE INFORMATION
October 1995
74LVT16652
3 3V ABT 16-Bit Transceiver Register
with TRI-STATE Outputs
General Description
The LVT16652 consists of sixteen bus transceiver circuits
with D-type flip-flops and control circuitry arranged for multi-
plexed transmission of data directly from the input bus or
from the internal registers Each byte has separate control
inputs which can be shorted together for full 16-bit opera-
tion Data on the A or B bus will be clocked into the registers
as the appropriate clock pin goes to HIGH logic level Out-
put Enable pins (OEAB OEBA) are provided to control the
transceiver function
The transceivers are designed for low-voltage (3 3V) V
CC
applications but with the capability to provide a TTL inter-
face to a 5V environment The LVT16652 is fabricated with
an advanced BiCMOS technology to achieve high speed
operation similar to 5V ABT while maintaining a low power
dissipation
Features
Y
Y
Y
Y
Y
Y
Y
Y
Input and output interface capability to systems at 5V
V
CC
Bus-Hold data inputs eliminate the need for external
pull-up resistors to hold unused inputs
Live insertion extraction permitted
Power Up Down high impedance provides glitch-free
bus loading
Outputs source sink
b
32 mA
a
64 mA
Available in SSOP and TSSOP
Functionally compatible with the 74 series 16652
Latch-up performance exceeds 500 mA
Connection Diagram
Pin Assignment for
SSOP and TSSOP
Pin Names
A
0
鈥揂
16
B
0
鈥揃
16
CPAB
n
CPBA
n
SAB
n
SBA
n
OEAB
n
OEBA
n
Description
Data Register A Inputs
TRI-STATE Outputs
Data Register B Inputs
TRI-STATE Outputs
Clock Pulse Inputs
Select Inputs
Output Enable Inputs
SSOP EIAJ
Order Number
NS Package
Number
74LVT16652MEA
74LVT16652MEAX
MS56A
TSSOP JEDEC
74LVT16652MTD
74LVT16652MTDX
MTD56
TL F 12024 鈥?1
TRI-STATE is a registered trademark of National Semiconductor Corporation
C
1996 National Semiconductor Corporation
TL F 12024
RRD-B30M17 Printed in U S A
http
www national com

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