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CD5474HC138 датащи(PDF) 1 Page - Texas Instruments |
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CD5474HC138 датащи(HTML) 1 Page - Texas Instruments |
1 / 19 page 1 Data sheet acquired from Harris Semiconductor SCHS147I Features • Select One Of Eight Data Outputs Active Low for 138, Active High for 238 • l/O Port or Memory Selector • Three Enable Inputs to Simplify Cascading • Typical Propagation Delay of 13 ns at VCC = 5 V, CL = 15 pF, TA = 25 oC • 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 - 2 V to 6 V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V • HCT Types - 4.5-V to 5.5-V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8 V (Max), VIH = 2 V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Description The ’HC138, ’HC238, ’HCT138, and ’HCT238 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). If the device is enabled, these inputs determine which one of the eight normally high outputs of the HC/HCT138 series go low or which of the normally low outputs of the HC/HCT238 series go high. Two active low and one active high enables (E1, E2, and E3) are provided to ease the cascading of decoders. The decoder’s eight outputs can drive ten low-power Schottky TTL equivalent loads. Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE CD54HC138F3A -55 to 125 16 Ld CERDIP CD54HC238F3A -55 to 125 16 Ld CERDIP CD54HCT138F3A -55 to 125 16 Ld CERDIP CD54HCT238F3A -55 to 125 16 Ld CERDIP CD74HC138E -55 to 125 16 Ld PDIP CD74HC138M -55 to 125 16 Ld SOIC CD74HC138MT -55 to 125 16 Ld SOIC CD74HC138M96 -55 to 125 16 Ld SOIC CD74HC238E -55 to 125 16 Ld PDIP CD74HC238M -55 to 125 16 Ld SOIC CD74HC238MT -55 to 125 16 Ld SOIC CD74HC238M96 -55 to 125 16 Ld SOIC CD74HC238NSR -55 to 125 16 Ld SOP CD74HC238PW -55 to 125 16 Ld TSSOP CD74HC238PWR -55 to 125 16 Ld TSSOP CD74HC238PWT -55 to 125 16 Ld TSSOP CD74HCT138E -55 to 125 16 Ld PDIP CD74HCT138M -55 to 125 16 Ld SOIC CD74HCT138MT -55 to 125 16 Ld SOIC CD74HCT138M96 -55 to 125 16 Ld SOIC CD74HCT238E -55 to 125 16 Ld PDIP CD74HCT238M -55 to 125 16 Ld SOIC CD74HCT238M96 -55 to 125 16 Ld SOIC NOTE: When ordering, use the entire part number. The suffixes 96 and R denote tape and reel. The suffix T denotes a small-quantity reel of 250. October 1997 - Revised August 2004 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © 2004, Texas Instruments Incorporated CD54/74HC138, CD54/74HCT138, CD54/74HC238, CD54/74HCT238 High-Speed CMOS Logic 3- to 8-Line Decoder/ Demultiplexer Inverting and Noninverting [ /Title (CD74 HC138 , CD74 HCT13 8, CD74 HC238 , CD74 HCT23 8) /Sub- ject (High Speed |
Аналогичный номер детали - CD5474HC138 |
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Аналогичное описание - CD5474HC138 |
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