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Details, datasheet, quote on part number:HD74AC4514
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Datasheet text preview:
HD74AC4514
4-bit Latch/4-to-16-Line Decoder
Description
This device presents a 4 to 16 line decoder with latched inputs. The HD74AC4514 presents a high level at the selected output. This device consists of four storage latches with common strobe and inhibit (G) inputs. When a low signal is applied to the strobe input, the input data is stored, decoded, and presented to the output. When strobe is high, all sixteen HD74HC4514 outputs are at a low logic level.
Feature
· Outputs Source/Sink 24 mA
HD74AC4514
Pin Arrangement
Strobe 1 Data1 2 Data2 3 S7 4 S6 5 S5 6 S4 7 S3 8 S2 9 S1 10 S0 11 GND 12 (Top view)
24 VCC 23 Inhibit 22 Data4 21 Data3 20 S10 19 S11 18 S8 17 S9 16 S14 15 S15 14 S12 13 S13
Logic Symbol
S0 S1 S2 S3 S4 S5 S6 4 to 16 S7 Decoder S8 S9 S10 S11 S12 S13 S14 S15 11 9 10 8 7 6 5 4 18 17 20 19 14 13 16 15
Data 1 Data 2 Data 3 Data 4 Strobe
2 3 21 22 1 Latch
A B C D
Inhibit
23
2
HD74AC4514
Pin Names
D1 to D4 Strobe Data1 to 4 S 0 to S15 Inhibit Data Inputs Data Strobe Input Data Inputs Outputs Data Enable Input
Function Table (Strobe = High)
Data Inputs Inhibit L L L L L L L L L L L L L L L L H D L L L L L L L L H H H H H H H H X C L L L L H H H H L L L L H H H H X B L L H H L L H H L L H H L L H H X A L H L H L H L H L H L H L H L H X Select Outputs S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 All output "L"
3
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