54ABT16646W-QML National Semiconductor, 54ABT16646W-QML Datasheet

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54ABT16646W-QML

Manufacturer Part Number
54ABT16646W-QML
Description
16-Bit Transceivers and Registers with TRI-STATE Outputs
Manufacturer
National Semiconductor
Datasheet
PrintDate=1998/07/14 PrintTime=11:10:43 43606 ds100226 Rev. No. 1 cmserv
© 1998 National Semiconductor Corporation
54ABT16646
16-Bit Transceivers and Registers with TRI-STATE
Outputs
General Description
The ’ABT16646 consists of bus transceiver circuits with
TRI-STATE, D-type flip-flops, and control circuitry arranged
for multiplexed transmission of data directly from the input
bus or from the internal registers. Data on the A or B bus will
be clocked into the registers as the appropriate clock pin
goes to a high logic level. Control OE and direction pins are
provided to control the transceiver function. In the trans-
ceiver mode, data present at the high impedance port may
be stored in either the A or the B register or in both. The se-
lect controls can multiplex stored and real-time (transparent
mode) data. The direction control determines which bus will
receive data when the enable control OE is Active LOW. In
the isolation mode (control OE HIGH), A data may be stored
in the B register and/or B data may be stored in the A regis-
ter.
Ordering Code
Logic Symbol
TRI-STATE
54ABT16646W-QML
®
is a registered trademark of National Semiconductor Corporation.
Military
DS100226
WA56A
Package
Number
DS100226-1
56-Lead Cerpack
Features
n Independent registers for A and B buses
n Multiplexed real-time and stored data
n A and B output sink capability of 48 mA, source
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
n Nondestructive hot insertion capability
n Standard Microcircuit Drawing (SMD) 5962-9450202
A
B
CPAB
SAB
OE
DIR
capability of 24 mA
power up and power down cycle
0
0
–A
–B
n
n
Pin Names
15
15
, SBA
n
, CPBA
Package Description
n
n
Proof
Data Register A Inputs/
TRI-STATE Outputs
Data Register B Inputs/
TRI-STATE Outputs
Clock Pulse Inputs
Select Inputs
Output Enable Input
Direction Control Input
Description
®
www.national.com
July 1998
1
1

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54ABT16646W-QML Summary of contents

Page 1

... OE is Active LOW. In the isolation mode (control OE HIGH), A data may be stored in the B register and/or B data may be stored in the A regis- ter. Ordering Code Military 54ABT16646W-QML Logic Symbol TRI-STATE ® registered trademark of National Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100226 PrintDate=1998/07/14 PrintTime=11:10:43 43606 ds100226 Rev ...

Page 2

Connection Diagram Real Time Transfer A-Bus to B-Bus FIGURE 1. Real Time Transfer B-Bus to A-Bus FIGURE 2. www.national.com PrintDate=1998/07/14 PrintTime=11:10:43 43606 ds100226 Rev. No. 1 cmserv Pin Assignment for Cerpack DS100226-2 DS100226-3 DS100226-4 2 Proof Storage from Bus to ...

Page 3

Function Table Inputs OE DIR CPAB CPBA SAB ...

Page 4

Logic Diagram www.national.com PrintDate=1998/07/14 PrintTime=11:10:43 43606 ds100226 Rev. No. 1 cmserv 4 Proof 4 ...

Page 5

Absolute Maximum Ratings Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic V Pin Potential to CC Ground Pin Input Voltage (Note 3) Input Current (Note 3) − +5.0 mA Voltage Applied to Any Output in ...

Page 6

DC Electrical Characteristics < Note 4: For 8-bit toggling, I 1.4 mA/MHz. CCD Note 5: Guaranteed but not tested. DC Electrical Characteristics Symbol Parameter V Quiet Output Maximum Dynamic V OLP V Quiet Output Minimum Dynamic V OLV Note 6: ...

Page 7

Capacitance Symbol Parameter C Input Capacitance IN C (Note 7) Output Capacitance I/O is measured at frequency MHz, per MIL-STD-883B, Method 3012. Note 7: C I/O AC Loading DS100226-9 *Includes jig and probe capacitance FIGURE 5. Standard ...

Page 8

AC Loading (Continued) FIGURE 11. Setup Time, Hold Time and Recovery Time Waveforms www.national.com PrintDate=1998/07/14 PrintTime=11:10:44 43606 ds100226 Rev. No. 1 cmserv DS100226-14 8 Proof Book Extract End 8 ...

Page 9

THIS PAGE IS IGNORED IN THE DATABOOK PrintDate=1998/07/14 PrintTime=11:10:44 43606 ds100226 Rev. No. 1 cmserv 9 Proof 9 9 ...

Page 10

... Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Deutsch Tel: +49 (0) 1 80-530 85 85 Fax: 65-2504466 English Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 Proof National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 10 ...

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