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CD74HC137, CD74HC137E, CD74HC137M

Table of contents:
Info of CD74HC137
Info of CD74HC137E
Info of CD74HC137M

CD74HC137, CD74HC137E, CD74HC137M Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:DIP D/C:96

CD74HC137, CD74HC137E, CD74HC137M Datasheet download

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Part Number: CD74HC137E

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: DIP

D/C: 96

Description: IC 3-TO-8 DECODER/DEMUX 16-DIP

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CD74HC137 General Description

The CD74HC137, CD74HCT137, 'HC237, and CD74HCT237 are high speed silicon gate CMOS decoders well suited to memory address decoding or data routing applications. Both circuits feature low power consumption usually associated with CMOS circuitry, yet have speeds comparable to low power Schottky TTL logic.

Both circuits have three binary select inputs (A0, A1 and A2) that can be latched by an active High Latch Enable (LE) signal to isolate the outputs from select-input changes. A "Low" LE makes the output transparent to the input and the circuit functions as a one-of-eight decoder. Two Output Enable inputs (OE₁ and OE₀) are provided to simplify cascading and to facilitate demultiplexing. The demultiplexing function is accomplished by using the A₀, A₁, A₂ inputs to select the desired output and using one of the other Output Enable inputs as the data input while holding the other Output Enable input in its active state. In the CD74HC137 and CD74HCT137 the selected output is a "Low"; in the 'HC237 and CD74HCT237 the selected output is a "High".

CD74HC137 Maximum Ratings

DC Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, I_IK
    For V_I < -0.5V or V_I> V_CC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
    For V_O < -0.5V or V_O > V_CC + 0.5V . . . . . . . . . . . . . . . . . .. . .±20mA
DC Output Source or Sink Current per Output Pin, I_O
    For V_O > -0.5V or V_O < V_CC + 0.5V . . . . . . . . . . . . . . . . . . . . .±25mA
DC V_CC or Ground Current, I_CC . . . . . . . . . . . . . . . . . . . . . . .. . .±50mA

CD74HC137 Features

• Select One of Eight Data Outputs
- Active Low for CD74HC137 and CD74HCT137
- Active High for 'HC237 and CD74HCT237
• l/O Port or Memory Selector
• Two Enable Inputs to Simplify Cascading
• Typical Propagation Delay of 13ns at V_CC = 5V, 15pF, T_A = 25oC (CD74HC237)
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . . .15 LSTTL Loads
• Wide Operating Temperature Range . . . -55^oC to 125^oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N_IL = 30%, N_IH = 30%, of V_CC at V_CC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, V_IL= 0.8V (Max), V_IH = 2V (Min)
- CMOS Input Compatibility, I_l 1A at V_OL, V_OH

CD74HC137 Connection Diagram

CD74HC137E Parameters

Technical/Catalog Information	CD74HC137E
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Circuit	1 x 3:8
Independent Circuits	1
Mounting Type	Through Hole
Current - Output High, Low	5.2mA, 5.2mA
Package / Case	16-DIP (300 mil)
Packaging	Tube
Type	Decoder/Demultiplexer
Voltage Supply Source	Single Supply
Operating Temperature	-55°C ~ 125°C
Voltage - Supply	2 V ~ 6 V
Drawing Number	296; 4040049; N; 14, 16, 18, 20
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	CD74HC137E CD74HC137E 296 9176 5 ND 29691765ND 296-9176-5

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