54abt16245 National Semiconductor Corporation, 54abt16245 Datasheet

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54abt16245

Manufacturer Part Number
54abt16245
Description
16-bit Transceiver With Tri-state Outputs
Manufacturer
National Semiconductor Corporation
Datasheet
PrintDate=1998/08/27 PrintTime=14:50:42 44961 ds100200 Rev. No. 1 cmserv
© 1998 National Semiconductor Corporation
54ABT16245
16-Bit Transceiver with TRI-STATE
General Description
The ’ABT16245 contains sixteen non-inverting bidirectional
buffers with TRI-STATE outputs and is intended for bus ori-
ented applications. The device is byte controlled. Each byte
has separate control inputs which can be shorted together
for full 16-bit operation. The T/R inputs determine the direc-
tion of data flow through the device. The OE inputs disable
both the A and B ports by placing them in a high impedance
state.
Features
n Bidirectional non-inverting buffers
Logic Symbol
Pin Description
TRI-STATE
Pin Names
OE
T/R
A
B
0
0
–A
–B
n
n
15
15
®
is a registered trademark of National Semiconductor Corporation.
Output Enable Input (Active Low)
Transmit/Receive Input
Side A Inputs/Outputs
Side B Inputs/Outputs
54ABT16245W-QML
Military
Description
DS100200
WA48A
Package
Number
48-Lead Cerpack
n Separate control logic for each byte
n 16-bit version of the ’ABT245
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 Non-destructive hot insertion capability
n Standard Microcircuit Drawing (SMD) 5962-9317501
capability of 24 mA
power up and power down cycle
Package Description
®
Outputs
Proof
DS100200-1
www.national.com
August 1998
1
1

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54abt16245 Summary of contents

Page 1

... The T/R inputs determine the direc- tion of data flow through the device. The OE inputs disable both the A and B ports by placing them in a high impedance state. Features n Bidirectional non-inverting buffers Military 54ABT16245W-QML Logic Symbol Pin Description Pin Names Description OE Output Enable Input (Active Low) ...

Page 2

Connection Diagram Pin Assignment for Cerpack Functional Description The ’ABT16245 contains sixteen non-inverting bidirectional buffers with TRI-STATE outputs. The device is byte con- trolled with each byte functioning identically, but independent of the other. The control pins can be shorted ...

Page 3

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic V Pin Potential to CC Ground Pin Input ...

Page 4

DC Electrical Characteristics Symbol Parameter I Dynamic I CCD CC Note 3: Guaranteed, but not tested. AC Electrical Characteristics Symbol Parameter t Propagation PLH t Delay Data PHL to Outputs t Output Enable PZH t Time PZL t Output Disable ...

Page 5

Capacitance (Continued Load Capacitance PLH 1 Output Switching 25˚ Load Capacitance PLH 16 Outputs Switching 25˚ Temperature (T PZL pF, 1 Output Switching L ...

Page 6

Capacitance (Continued Temperature (T PZH pF, 16 Outputs Switching Temperature (T PZL pF, 16 Outputs Switching Load Capacitance PZL 16 Outputs Switching Number ...

Page 7

Capacitance (Continued) Dashed lines represent design characteristics; for specified guarantees, refer to AC Characteristics Table. PrintDate=1998/08/27 PrintTime=14:50:43 44961 ds100200 Rev. No. 1 cmserv I vs Frequency CC Average 25˚ 5. All Outputs Unloaded/Unterminated; 16 ...

Page 8

AC Loading *Includes jig and probe capacitance FIGURE 1. Standard AC Test Load FIGURE 2. Input Pulse Requirements Amplitude Rep. Rate t 3.0V 1 MHz 500 ns FIGURE 3. Test Input Signal Requirements FIGURE 4. TRI-STATE Output HIGH and LOW ...

Page 9

THIS PAGE IS IGNORED IN THE DATABOOK PrintDate=1998/08/27 PrintTime=14:50:44 44961 ds100200 Rev. No. 1 cmserv 9 Proof 9 9 ...

Page 10

Physical Dimensions LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR CORPORATION. As used herein: 1. Life ...

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