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CD74HC139 Datasheet(PDF) 1 Page - Texas Instruments |
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CD74HC139 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 6 page 1 Data sheet acquired from Harris Semiconductor SCHS148A Features • Multifunction Capability - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer • Active Low Mutually Exclusive Outputs • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH • Memory Decoding, Data Routing, Code Conversion Description The CD74HC139 and CD74HCT139 devices contain two independent binary to one of four decoders each with a single active low enable input (1E or 2E). Data on the select inputs (1A0 and 1A1 or 2A0 and 2A1) cause one of the four normally high outputs to go low. If the enable input is high all four outputs remain high. For demultiplexer operation the enable input is the data input. The enable input also functions as a chip select when these devices are cascaded. This device is functionally the same as the CD4556B and is pin compatible with it. The outputs of these devices can drive 10 low power Schottky TTL equivalent loads. The 74HCT logic family is functionally as well as pin equivalent to the 74LS logic family. Pinout CD74HC139, CD74HCT139 (PDIP, SOIC) TOP VIEW Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. CD74HC139E -55 to 125 16 Ld PDIP E16.3 CD74HCT139E -55 to 125 16 Ld PDIP E16.3 CD74HC139M -55 to 125 16 Ld SOIC M16.15 CD74HCT139M -55 to 125 16 Ld SOIC M16.15 NOTES: 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Die is available which meets all electrical specifications. Please contact your local sales office or customer service for ordering information. 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 1E 1A0 1A1 1Y0 1Y1 1Y2 GND 1Y3 VCC 2A0 2A1 2Y0 2Y1 2Y2 2Y3 2E September 1997 - Revised May 1999 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Texas Instruments Incorporated 1999 CD74HC139, CD74HCT139 High-Speed CMOS Logic Dual 2-to-4 Line Decoder/Demultiplexer [ /Title (CD74 HC139 , CD74 HCT13 9) /Sub- ject (High Speed CMOS Logic Dual 2-to-4 Line Decod |
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