54ABT245J-QML National Semiconductor, 54ABT245J-QML Datasheet

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54ABT245J-QML

Manufacturer Part Number
54ABT245J-QML
Description
Manufacturer
National Semiconductor
Datasheet

Specifications of 54ABT245J-QML

Logic Family
ABT
Operating Supply Voltage (typ)
5V
Propagation Delay Time
7.5ns
Number Of Elements
1
Number Of Channels
8
Input Logic Level
TTL
Output Logic Level
TTL
Output Type
3-State
Package Type
CDIP
Polarity
Non-Inverting
Logical Function
Bus Transceiver
Operating Supply Voltage (min)
4.5V
Technology
BiCMOS
Operating Temp Range
-55C to 125C
Operating Temperature Classification
Military
Mounting
Through Hole
Pin Count
20
Lead Free Status / Rohs Status
Not Compliant
© 1998 National Semiconductor Corporation
54ABT245
Octal Bidirectional Transceiver with TRI-STATE
General Description
The ’ABT245 contains eight non-inverting bidirectional buff-
ers with TRI-STATE outputs and is intended for bus-oriented
applications. Current sinking capability is 48 mA on both the
A and B ports. The Transmit/Receive (T/R) input determines
the direction of data flow through the bidirectional trans-
ceiver. Transmit (active HIGH) enables data from A ports to B
ports; Receive (active LOW) enables data from B ports to A
ports. The Output Enable input, when HIGH, disables both A
and B ports by placing them in a High Z condition.
Features
n Bidirectional non-inverting buffers
n A and B output sink capability of 48 mA, source
Ordering Code:
Logic Symbol
TRI-STATE
capability of 24 mA
54ABT245J-QML
54ABT245W-QML
54ABT245E-QML
®
is a registered trademark of National Semiconductor Corporation.
Military
DS100204
Package
Number
J20A
W20A
E20A
20-Lead Ceramic Dual-In-Line
20-Lead Cerpak
20-Lead Ceramic Leadless Chip Carrier, Type C
n Guaranteed output skew
n Guaranteed multiple output switching specifications
n Output switching specified for both 50 pF and 250 pF
n Guaranteed simultaneous switching, noise level and
n Guaranteed latchup protection
n High impedance glitch-free bus loading during entire
n Non-destructive hot insertion capability
n Disable time is less than enable time to avoid bus
n Standard Microcircuit Drawing (SMD) 5962-9214801
loads
dynamic threshold performance
power up and power down cycle
contention
DS100204-1
Package Description
®
Outputs
www.national.com
July 1998

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54ABT245J-QML Summary of contents

Page 1

... The Output Enable input, when HIGH, disables both A and B ports by placing them in a High Z condition. Features n Bidirectional non-inverting buffers n A and B output sink capability of 48 mA, source capability Ordering Code: Military Package Number 54ABT245J-QML J20A 54ABT245W-QML W20A 54ABT245E-QML E20A Logic Symbol TRI-STATE ® registered trademark of National Semiconductor Corporation. ...

Page 2

Connection Diagrams Pin Assignment for DIP and Flatpak. DS100204-5 Logic Diagram www.national.com Pin Assignment for LCC Pin Descriptions Pin Names Description OE Output Enable Input (Active LOW) T/R Transmit/Receive Input A –A Side A Inputs or TRI-STATE Outputs 0 7 ...

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 Voltage (Note 2) Input Current (Note 2) − ...

Page 4

DC Electrical Characteristics Symbol Parameter I Dynamic I No Load CCD CC (Note 3) Note 3: Guaranteed but not tested. < Note 4: For 8 bits toggling, I 0.8 mA/MHz. CCD DC Electrical Characteristics Symbol Parameter V Quiet Output Maximum ...

Page 5

Capacitance (Continued Temperature (T ) PLH pF, 1 Output Switching Load Capacitance PLH = 25˚C 1 Output Switching Dashed lines represent design characteristics; for specified guarantees, refer to AC ...

Page 6

Capacitance (Continued Temperature (T ) PZL pF, 1 Output Switching Temperature (T ) PZL pF, 8 Outputs Switching C L Dashed lines represent design characteristics; for specified guarantees, ...

Page 7

Capacitance (Continued Temperature (T ) PZH pF, 8 Outputs Switching Load Capacitance PZH = 25˚C 8 Outputs Switching Dashed lines represent design characteristics; for specified guarantees, refer to AC ...

Page 8

AC Loading * Includes jig and probe capacitance FIGURE 1. Standard AC Test Load AC Waveforms FIGURE 4. Propagation Delay Waveforms for Inverting and Non-Inverting Functions www.national.com DS100204-6 FIGURE 2. Test Input Signal Levels Amplitude Rep. Rate 3.0V FIGURE 3. ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Ceramic Dual-In-Line Package (D) 20-Terminal Ceramic Chip Carrier (L) NS Package Number E20A NS Package Number J20A 9 www.national.com ...

Page 10

... National Semiconductor Asia Pacific Customer Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Fax: 65-2504466 Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Tel: +49 (0) 1 80-534 16 80 National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 ...

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