DM74S253N - Fairchild Semiconductor

August 1986

Revised May 2000

DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer

DM74S253

Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer

General Description

Each of these Schottky-clamped data selectors/multiplex-

ers contains inverters and drivers to supply fully comple-

mentary, on-chip, binary decoding data selection to the

AND-OR gates. Separate output control inputs are pro-

vided for each of the two four-line sections.

The 3-STATE outputs can inte rface directly w ith data lines

of bus-org anized systems. With a ll but one of the co mmon

outputs disabled (at a high impedance state), the low

impedance of the single enable output will drive the bus

line to a HIGH or LOW logic level.

Features

■3-STATE version of S153 with same pin-out

■Schottky-d i ode -cla mp ed tra nsisto rs

■Permits multiplexing from N lines to 1 line

■Performs parallel-T-serial conversion

■Strobe/o utp ut cont rol

■High fan-out totem-pole outputs

■Typical propagation delay

From data to output 6 ns

From select to output 12 ns

■Typical power dissipation 275 m W

Ordering Code:

Connection Diagram Function Table

Addres s inputs A and B are com mon to b ot h sectio ns .

H = HIGH Level

L = LOW Level

X = Don’t Care

Z = High Impedance

Order Number Package Number Package Description

DM74S253N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Select Data Inputs Output Output

Inputs Control

B A C0 C1 C2 C3 G Y

XXXXXX H Z

LLLXXX L L

LLHXXX L H

LHXLXX L L

LHXHXX L H

HLXXLX L L

HLXXHX L H

HHXXXL L L

HHXXXH L H

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DM74S253

Logic Diagram

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DM74S253

Absolute Maximum Ratings(Note 1) Note 1: The “Absolute Maximum Ratings” are those valu es b eyo nd w hich

the saf ety of the device cannot be gu aranteed. Th e device shou ld not be

operated at these limits. The parametric values defined in the Electrical

Char ac teristi c s tables a re not guar anteed at t he absolu t e maximum r ating s .

The “R ecomm ended Ope rating Co ndition s” table will define the condit ions

for actu al device operation.

Recommended Operating Conditions

Electri cal Characteristics

over recommended operating free air temperature (unless otherwise noted)

Note 2: All typicals are at VCC = 5V, TA = 25°C.

Note 3: Not more than one out put shou ld be shorte d at a t im e, and the duration sh ould not ex c eed one s ec ond.

Note 4: ICC is measured with all outputs OPEN.

Switching Characteristics

at VCC = 5V and TA = 25°C

Note 5: CL = 5 pF.

Supply Voltage 7V

Input Voltage 5.5V

Operating Free Air Temperature Range 0°C to +70°C

Storage Temperature Range −65°C to +150°C

Symbol Parameter Min Nom Max Units

VCC Supply Voltage 4.75 5 5.25 V

VIH HIGH Level Input Voltage 2 V

VIL LOW Level I nput Voltage 0.8 V

IOH HIGH Level Output Curr en t −6.5 mA

IOL LOW Level Output Current 20 mA

TAFree Air Operating Temperature 0 70 °C

Symbol Parameter Conditions Min Typ Max Units

(Note 2)

VIInput Clamp Voltage VCC = Min, II = −18 mA −1.2 V

VOH HIGH Level VCC = Min, IOH = Max 2.4 3.2 V

Output Voltage VIL = Max, VIH = Min

VOL LOW Level VCC = Min, IOL = Max 0.5 V

Output Voltage VIH = Min, VIL = Max

IIInput Current @ Max Input Voltage VCC = Max, VI = 5.5V 1 mA

IIH HIGH Level Input Current VCC = Max, VI = 2.7V 50 µA

IIL Low Level Input Current VCC = Max, VI = 0.5V −2mA

IOZH Off-State Output Current with VCC = Max, VO = 2.4V 50 µA

HIGH Level Output Voltage Applied VIH = Min, VIL = Max

IOZL Off-State Output Current with VCC = Max, VO = 0.5V −50 µA

LOW Level Output Voltage Applied VIH = Min, VIL = Max

IOS Short Circuit Output Current VCC = Max (Note 3) −40 −100 mA

ICC Supply Current VCC = Max (Note 4) 55 70 mA

RL = 280Ω

Symbol Parameter From (Input) CL = 15 pF CL = 50 pF Units

To (Output) Min Max Min Max

tPLH Propagation Delay Time LOW-to-HIGH Level Output Data to Y 9 12 ns

tPHL Propagation Delay Time HIGH-to-LOW Level Output Data to Y 9 12 ns

tPLH Propagation Delay Time LOW-to-HIGH Level Output Select to Y 18 21 ns

tPHL Propagation Delay Time HIGH-to-LOW Level Output Select to Y 18 21 ns

tPZH Output Enable Time to HIGH Level Output Output Control to Y 16.5 19.5 ns

tPZL Output Enable Time to LOW Level Output Output Control to Y 18 21 ns

tPHZ Output Disable Time to HIGH Level Output (Note 5) Output Control to Y 9.5 ns

tPLZ Output Disable Time to LOW Level Output (Note 5) Output Control to Y 15 ns

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DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer

Physical Dimensions inches (millimeters) unless otherwise noted

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Package Number N16E

Fairchild does not assu me any responsibility for use of any circuitry de scribed, no circuit patent licenses are implied and

Fairchild reserves the right at any time without notice to change said circuitry and specifications.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD

SEMICONDUCTOR CORPORATION. As used herein:

1. Life suppor t de vices o r syste ms are devices or syste ms

which, (a) are intended for surgical implant into the

body, or (b) support or sustain life, and (c) whose failure

to perform when properly used in accordance with

instructions for use provided in the labeling, can be rea-

sonably expected to result in a significant injury to the

user.

2. A critical compon ent i n any compon ent of a lif e supp ort

device or system whose failure to perform can be rea-

sonabl y ex pect ed to ca use the fa ilu re of the li fe su pp ort

device or system, or to affect its safety or effectiveness.