DM74S253N

DM74S253N Datasheet

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

Part	Datasheet
DM74S253N	DM74S253N (pdf)

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DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections. The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common 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. s 3-STATE version of S153 with same pin-out s Schottky-diode-clamped transistors s Permits multiplexing from N lines to 1 line s Performs parallel-T-serial conversion s Strobe/output control s High fan-out totem-pole outputs s Typical propagation delay From data to output 6 ns From select to output 12 ns s Typical power dissipation 275 mW Ordering Code: Order Number Package Number Package Description DM74S253N N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Connection Diagram Function Table Select Data Inputs Output Inputs Control B A C0 C1 C2 C3 L LXXX L LHXXX L HX L XX LHXHXX HLXXLX H L XXHX HHXXX L HHXXXH Address inputs A and B are common to both sections. H = HIGH Level L = LOW Level X = Don’t Care Z = High Impedance Output Y Z L H L H L H L H 2000 Fairchild Semiconductor Corporation DS006481 DM74S253 Logic Diagram DM74S253 Absolute Maximum Ratings Note 1 Supply Voltage Input Voltage 5.5V Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions VCC VIH VIL IOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature Electrical Characteristics

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

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

Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections.

The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common 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.
s 3-STATE version of S153 with same pin-out s Schottky-diode-clamped transistors s Permits multiplexing from N lines to 1 line s Performs parallel-T-serial conversion s Strobe/output control s High fan-out totem-pole outputs s Typical propagation delay

From data to output 6 ns From select to output 12 ns s Typical power dissipation 275 mW
Ordering Code:

Order Number Package Number

Package Description

DM74S253N

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Connection Diagram

Function Table

Select

Data Inputs

Output

Inputs

Control

B A C0 C1 C2 C3

L LXXX

L LHXXX

L HX L XX

LHXHXX

HLXXLX

H L XXHX

HHXXX L

HHXXXH

Address inputs A and B are common to both sections. H = HIGH Level L = LOW Level X = Don’t Care Z = High Impedance

Output

Y Z L H L H L H L H
2000 Fairchild Semiconductor Corporation DS006481

DM74S253

Logic Diagram

DM74S253

Absolute Maximum Ratings Note 1

Supply Voltage

Input Voltage
5.5V

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

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

Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.

Recommended Operating Conditions

VCC VIH VIL IOH IOL TA

Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature

Electrical Characteristics

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Datasheet ID: DM74S253N 513838