HD74AC393 Dual Modulo-16-Counter Description The HD74AC393 contains a pair of high speed 4-stage ripple counters. Each half of the HD74AC393 operates as a modulo-16 binary divider, with the last three stages triggered in a ripple fashion. The flipflops are triggered by a High-to-Low transition of their CP inputs. Each half of each circuit type has a Master Reset input which responds to a High signal by forcing all four outputs to the Low state. Feature • Outputs Source/Sink 24 mA Pin Arrangement CP 1 14 VCC MR 2 13 CP Q0 3 12 MR Q1 4 11 Q0 Q2 5 10 Q1 Q3 6 9 Q2 GND 7 8 Q3 (Top view) HD74AC393 Logic Symbol (each half) 1, 13 CP MR 2, 12 Q0 Q1 3, 11 4, 10 Q2 5, 9 Q3 6, 8 Vcc=Pin14 GND=Pin7 Pin Names CP MR Q0 – Q3 Clock Pulse Input (Active Falling Edge) Asynchronous Master Reset Input (Active High) Flip-flop Outputs Functional Description Each half of the HD74AC393 operates in the modulo-16 binary sequence, as indicated in the + 16 Truth Table. The first flip-flop is triggered by High-to-Low transitions of the CP input signal. Each of the other flip-flops is triggered by a High-to-Low transition of the Q output of the preceding flip-flop. Thus state changes of the Q outputs do not occur simultaneously. This means that logic signals derived from combinations of these outputs will be subject to decoding spikes and, therefore, should not be used as clocks for other counters, registers or flip-flops. A High signal on MR forces all outputs to the Low state and prevents counting. 2 HD74AC393 Truth Table Outputs Count Q3 Q2 Q1 Q0 0 L L L L 1 L L L H 2 L L H L 3 L L H H 4 L H L L 5 L H L H 6 L H H L 7 L H H H 8 H L L L 9 H L L H 10 H L H L 11 H L H H 12 H H L L 13 H H L H 14 H H H L 15 H H H H H : L : High Voltage Level Low Voltage Level Logic Diagram (one, half shown) CP K CP J CD K CP J CD K CP J CD K CP J CD Q Q Q Q Q0 Q1 Q2 Q3 MR 3 HD74AC393 DC Characteristics (unless otherwise specified) Item Symbol Max Unit Condition Maximum quiescent supply current I CC 80 µA VIN = VCC or ground, VCC = 5.5 V, Ta = Worst case Maximum quiescent supply current I CC 8.0 µA VIN = VCC or ground, VCC = 5.5 V, Ta = 25°C AC Characteristics: HD74AC393 Ta = +25°C CL = 50 pF Ta = –40°C to +85°C CL = 50 pF Item Symbol VCC (V)*1 Min Typ Max Min Max Unit Maximum clock f max 3.3 125 — — 100 — MHz 5.0 150 — — 125 — 3.3 1.0 8.5 12.0 1.0 13.0 5.0 1.0 6.5 9.0 1.0 10.0 3.3 1.0 8.0 11.5 1.0 12.5 5.0 1.0 6.0 8.5 1.0 9.5 3.3 1.0 12.0 15.0 1.0 16.0 5.0 1.0 9.5 12.0 1.0 13.0 3.3 1.0 11.5 14.5 1.0 15.5 5.0 1.0 9.0 11.5 1.0 12.5 3.3 1.0 15.0 18.0 1.0 19.5 5.0 1.0 12.0 14.5 1.0 16.0 3.3 1.0 14.5 17.5 1.0 19.0 5.0 1.0 11.5 14.0 1.0 15.5 3.3 1.0 18.0 20.5 1.0 22.0 5.0 1.0 14.5 17.0 1.0 18.5 3.3 1.0 17.5 20.0 1.0 21.5 5.0 1.0 14.0 16.5 1.0 17.5 3.3 1.0 10.5 14.0 1.0 15.0 5.0 1.0 8.5 11.0 1.0 12.0 frequency Propagation delay t PLH CP to Q 0 Propagation delay t PHL CP to Q 0 Propagation delay t PLH CP to Q 1 Propagation delay t PHL CP to Q 1 Propagation delay t PLH CP to Q 2 Propagation delay t PHL CP to Q 2 Propagation delay t PLH CP to Q 3 Propagation delay t PHL CP to Q 3 Propagation delay MR to Q0, Q1, Q2 or Q3 Note: 4 t PHL 1. Voltage Range 3.3 is 3.3 V ± 0.3 V Voltage Range 5.0 is 5.0 V ± 0.5 V ns ns ns ns ns ns ns ns ns HD74AC393 AC Operating Requirements: HD74AC393 Ta = –40°C to +85°C CL = 50 pF Ta = +25°C CL = 50 pF Item Symbol VCC (V)*1 Typ Guaranteed Minimum Unit Pulse width CP tw 3.3 3.5 5.5 7.0 ns 5.0 2.5 4.5 5.0 3.3 –2.5 0.0 0.0 5.0 –2.5 0.0 0.0 Recovery time MR to CP Note: t rec ns 1. Voltage Range 3.3 is 3.3 V ± 0.3 V Voltage Range 5.0 is 5.0 V ± 0.5 V Capacitance Item Symbol Typ Unit Condition Input capacitance CIN 4.5 pF VCC = 5.5 V Power dissipation capacitance CPD 50 pF VCC = 5.0 V 5 Unit: mm 19.20 20.32 Max 8 6.30 7.40 Max 14 1.30 7 2.54 ± 0.25 0.48 ± 0.10 0.51 Min 2.39 Max 2.54 Min 5.06 Max 1 7.62 + 0.10 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Weight (reference value) DP-14 Conforms Conforms 0.97 g Unit: mm 10.06 10.5 Max 8 5.5 14 1 0.10 ± 0.10 1.42 Max 1.27 *0.42 ± 0.08 0.40 ± 0.06 *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 7 + 0.20 7.80 – 0.30 1.15 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA — Conforms 0.23 g Unit: mm 8.65 9.05 Max 8 1 7 *0.20 ± 0.05 0.635 Max 1.75 Max 3.95 14 + 0.10 6.10 – 0.30 1.08 *0.40 ± 0.06 0.11 0.14 +– 0.04 0° – 8° 1.27 0.67 0.60 +– 0.20 0.15 0.25 M *Pd plating Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DN Conforms Conforms 0.13 g Unit: mm 4.40 5.00 5.30 Max 14 8 1 7 0.65 0.20 ± 0.06 1.0 0.13 M 6.40 ± 0.20 0.10 *Dimension including the plating thickness Base material dimension *0.17 ± 0.05 0.15 ± 0.04 1.10 Max 0.83 Max 0.07 +0.03 –0.04 *0.22+0.08 –0.07 0° – 8° 0.50 ± 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) TTP-14D — — 0.05 g Cautions 1. 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