NSC 100343FMQB, 100343DMQB Datasheet

100343
Low Power 8-Bit Latch

General Description

The 100343 contains eight D-type latches, individual inputs,
(D

n

), outputs (Qn), a commonenable pin (E), and a latch en­able pin (LE). 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.

The 100343 outputs are designed to drive a 50Ω termination
resistor to −2.0V. All inputs have 50 kΩ pull-down resistors.

Features

n Low power operation
n 2000V ESD protection
n Voltage compensated operating range=−4.2V to −5.7V
n Available to MIL-STD-883

Logic Symbol

Pin Names Description

D

0–D7

Data Inputs

E

Enable Input

LE

Latch Enable Input

Q

0–Q7

Data Inputs

NC No Connect

DS100298-1

August 1998

100343 Low Power 8-Bit Latch

© 1998 National Semiconductor Corporation DS100298 www.national.com

Connection Diagrams

Logic Diagram

Truth Table

Inputs Outputs

D

n

E LE Q

n

LLL L
HLL H
X H X Latched (Note 1)
X X H Latched (Note 1)

H=HIGH voltage level

L=LOW voltage level

X=Don’t care

Note 1: Retains data present before either LE or E went HIGH

24-Pin DIP

DS100298-2

24-Pin Quad Cerpak

DS100298-3

DS100298-5

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Absolute Maximum Ratings (Note 2)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Storage Temperature (T

STG

) −65˚C to +150˚C

Maximum Junction Temperature (T

J

)

Ceramic +175˚C

V

EE

Pin Potential to Ground Pin −7.0V to +0.5V

Input Voltage (DC) V

EE

to +0.5V
Output Current (DC Output HIGH) −50 mA
ESD (Note 3) ≥2000V

Recommended Operating
Conditions

Case Temperature (TC)

Military −55˚C to +125˚C

Supply Voltage (V

EE

) −5.7V to −4.2V

Note 2: Absolute maximum ratings are those values beyond which the de­vice may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.

Note 3: ESD testing conforms to MIL-STD-883, Method 3015.

Military Version
DC Electrical Characteristics

V

EE

=

−4.2V to −5.7V, V

CC

=

V

CCA

=

GND, T

C

=

−55˚C to +125˚C

Symbol Parameter Min Max Units T

C

Conditions Notes

V

OH

Output HIGH Voltage −1025 −870 mV 0˚C to V

IN

=

V

IH

(Max)

or V

IL

(Min)

Loading with

50Ω to −2.0V

1, 2, 3

+125˚C

−1085 −870 mV −55˚C

V

OL

Output LOW Voltage −1830 −1620 mV 0˚C to

+125˚C

−1830 −1555 mV −55˚C

V

OHC

Output HIGH Voltage −1035 mV 0˚C to V

IN

=

V

IH

(Max)

or V

IL

(Min)

Loading with

50Ω to −2.0V

1, 2, 3

+125˚C

−1085 mV −55˚C

V

OLC

Output LOW Voltage −1610 mV 0˚C to

+125˚C

−1555 mV −55˚C

V

IH

Input HIGH Voltage −1165 −870 mV −55˚C to Guaranteed HIGH Signal for All Inputs 1, 2, 3, 4

+125˚C

V

IL

Input LOW Voltage −1830 −1475 mV −55˚C to Guaranteed LOW Signal for All Inputs 1, 2, 3, 4

+125˚C

I

IL

Input LOW Current 0.50 µA −55˚C to V

EE

=

−4.2V 1, 2, 3

+125˚C V

IN

=

V

IL

(Min)

I

IH

Input HIGH Current 240 µA 0˚C to V

EE

=

−5.7V

V

IN

=

V

IH

(Max)

1, 2, 3

+125˚C

340 µA −55˚C

I

EE

Power Supply Current −55˚C to Inputs Open

−100 −35 mA +125˚C V

EE

=

−4.2V to −4.8V 1, 2, 3

−105 −35 V

EE

=

−4.2V to −5.7V

Note 4: F100K 300 Series cold temperature testing is performed by temperature soaking (to guarantee junction temperature equals −55˚C), then testing immediately
without allowing for the junction temperature to stabilize due to heat dissipation after power-up. This provides “cold start” specs which can be consideredaworstcase
condition at cold temperatures.

Note 5: Screen tested 100%on each device at −55˚C, +25˚C, and +125˚C, Subgroups 1, 2, 3, 7, and 8.
Note 6: Sample tested (Method 5005, Table I) on each manufactured lot at −55˚C, +25˚C, and +125˚C, Subgroups A1, 2, 3, 7, and 8.
Note 7: Guaranteed by applying specified input condition and testing V

OH/VOL

.

Military Version
AC Electrical Characteristics

V

EE

=

−4.2V to −5.7V, V

CC

=

V

CCA

=

GND

Symbol Parameter T

C

=

−55˚C T

C

=

+25˚C T

C

=

+125˚C Units Conditions Notes

Min Max Min Max Min Max

t

PLH

Propagation Delay 0.50 2.70 0.50 2.30 0.50 2.80 ns

Figures 1, 2, 3

(Notes 8, 9,

10, 12)

t

PHL

Dnto Output

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