HD74HC4515

HD74HC4515 4-bit Latch/4-to-16-line Decoder Description This device presents 4-to-16 line decoder with latched inputs. The HD74HC4515 presents a low 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 inhibit is high, all HD74HC4515 outputs are a high logic level. Features High Speed Operation: tpd (Data to S) = 20 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) HD74HC4515 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 “H” 2 HD74HC4515 Pin Arrangement Strobe Data 1 Data 2 S7 S6 S5 S4 S3 S1 1 2 3 4 B A D C 5 6 7 8 9 4 to 16 Decoder Latch 24 23 22 21 20 19 18 17 16 15 14 13 (Top view) VCC Inhibit Data 4 Data 3 S10 S11 S8 S9 S14 S15 S12 S13 S2 10 S0 11 GND 12 3 HD74HC4515 Logic Diagram S0 S1 S2 D1 IN S Q Q S3 S4 S5 D2 S6 S7 S8 D3 S9 S10 D4 S11 S12 S13 Inhibit S14 S15 Strobe 4 HD74HC4515 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°...