100344FMQB. National Semiconductor, 100344FMQB. Datasheet

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100344FMQB.

Manufacturer Part Number
100344FMQB.
Description
Manufacturer
National Semiconductor
Type
D-Typer
Datasheet

Specifications of 100344FMQB.

Logic Family
ECL
Number Of Bits
8
Number Of Elements
1
Latch Mode
Transparent
Polarity
Non-Inverting
Technology
ECL
Package Type
CQFP
Propagation Delay Time
4.6ns
Operating Supply Voltage (typ)
-5V
High Level Output Current
-100mA
Operating Supply Voltage (min)
-4.2V
Operating Supply Voltage (max)
-5.7V
Operating Temp Range
-55C to 125C
Operating Temperature Classification
Military
Mounting
Surface Mount
Pin Count
24
Output Type
3-State
Lead Free Status / RoHS Status
Not Compliant
© 1998 National Semiconductor Corporation
100344
Low Power 8-Bit Latch with Cut-Off Drivers
General Description
The 100344 contains eight D-type latches, individual inputs
(D
(LE), and output enable pin (OEN). A Q output follows its D
input when both E and LE are LOW. When either E or LE (or
both) are HIGH, a latch stores the last valid data present on
its D input prior to E or LE going HIGH.
A HIGH on OEN holds the outputs in a cut-off state. The
cut-off state is designed to be more negative than a normal
ECL LOW level. This allows the output emitter-followers to
turn off when the termination supply is −2.0V, presenting a
high impedance to the data bus. This high impedance re-
duces termination power and prevents loss of low state
noise margin when several loads share the bus.
Logic Symbol
Connection Diagrams
n
), outputs (Q
n
), a common enable pin (E), latch enable
24-Pin DIP
DS100317-1
DS100317-4
DS100317
The 100344 outputs are designed to drive a doubly termi-
nated 50
puts have 50 k
Features
n Cut-off drivers
n Drives 25
n Low power operation
n 2000V ESD protection
n Voltage compensated operating range = −4.2V to −5.7V
n Available to MIL-STD-883
D
E
LE
OEN
Q
Pin Names
0
0
–D
–Q
7
7
transmission line (25
load
pull-down resistors.
Data Inputs
Enable Input
Latch Enable Input
Output Enable Input
Data Outputs
24-Pin Quad Cerpak
Description
load impedance). All in-
DS100317-2
www.national.com
August 1998

Related parts for 100344FMQB.

100344FMQB. Summary of contents

Page 1

... Logic Symbol DS100317-4 Connection Diagrams 24-Pin DIP DS100317-1 © 1998 National Semiconductor Corporation DS100317 The 100344 outputs are designed to drive a doubly termi- nated 50 transmission line (25 load impedance). All in- puts have 50 k pull-down resistors ...

Page 2

Logic Diagram Truth Table Inputs OEN HIGH Voltage level L = LOW Voltage level ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Above which the useful life may be impaired Storage Temperature (T ) STG Maximum Junction Temperature ( Ceramic V Pin Potential to Ground Pin EE Input Voltage (DC) ...

Page 4

AC Electrical Characteristics = −4.2V to −5.7V GND CCA Symbol Parameter T Min t Propagation Delay 0.50 PLH Output PHL n t Propagation Delay 0.80 PLH t LE ...

Page 5

Switching Waveforms FIGURE 2. Propagation Delay and Cutoff Times FIGURE 3. Setup, Hold and Pulse Width Times FIGURE 4. Propagation Delay LE DS100317-7 DS100317-8 DS100317-9 5 www.national.com ...

Page 6

6 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted 24-Lead Ceramic Dual-In-Line Package (0.400" Wide) (D) NS Package Number J24E 24-Lead Quad Cerpak (F) NS Package Number W24B 7 www.national.com ...

Page 8

... 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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