HD74HC192/HD74HC193 Synchronous Up/Down Decade Counter (Dual Clock Line) Synchronous Up/Donw 4-bit Binary Counter (Dual Clock Line) Description The HD74HC192 is a decade counter, and the HD74HC193 is a binary counter. Both counters have two separate clock inputs, an up count input and a down count input. All outputs of the flip-flops are simultaneously triggered on the low to high transition of either clock while the other input is held high. The direction of counting is determined by which input is clocked. These counters may be preset by entering the desired data on the data A, data B, data C, and data D inputs. When the load input is taken low the data is loaded independently of either clock input. This feature allows the counters to be used as divide-by-n counters by modifying the count length with the preset inputs. In addition both counters can also be cleared. This is accomplished by inputting a high on the clear input. All 4 internal stages are set to a low level independently of either count input. Both a borrow and carry output are provided to enable cascading of both up and down counting functions. The borrow output produces a negative going pulse when the counter underflows and the carry outputs a pulse when the counter overflows. The counters can be cascaded by connecting the carry and borrow outputs of one device to the count up and count down inputs, respectively, of the next device. Features • • • • • High Speed Operation: tpd (Clock Up or Count Down to Q) = 21 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) HD74HC192/HD74HC193 Pin Arrangement Data B 1 Input Outputs Inputs 16 VCC QB 2 QB QA 3 QA B A 15 Data A Inputs Clear 14 Clear Count Down 4 Count Borrow Down 13 Borrow Count Up 5 Count Up Carry 12 Carry QC 6 QC Load 11 Load QD 7 QD Outputs Outputs D C 9 Data D GND 8 (Top view) 2 10 Data C Inputs HD74HC192/HD74HC193 Logic Diagram HD74HC192 Count Down Borrow Count Up Carry CK R Q CK S Q QA Data A CK R Q CK S Q QB Data B CK R Q CK S Q QC Data C CK R Q CK S Q QD Data D Load Clear 3 HD74HC192/HD74HC193 HD74HC193 Count Down Borrow Count Up Carry CK R Q CK S Q QA Data A CK R Q CK S Q QB Data B CK R Q CK S Q QC Data C CK R Q CK S Q QD Data D Load Clear 4 HD74HC192/HD74HC193 Timing Chart HD74HC192 Illustrated below is the following sequence: 1. 2. 3. 4. Clear outputs to zero. Load (preset) to binary seven. Count up to eight, nine, zero, one and two. Count down to one, zero, borrow, nine, eight and seven. Clear Load A Data Inputs B C D Count Up Count Down QA QB QC QD Carry Borrow 8 Sequence Illustrated 0 7 Clear Preset 9 0 Count Up 1 2 1 0 9 8 7 Count Down 5 HD74HC192/HD74HC193 HD74HC191 Illustrated below is the following sequence: 1. 2. 3. 4. Clear outputs to zero. Load (preset) to binary thirteen. Count up to fourteen, fifteen, zero, one and two. Count down to one, zero, borrow, fifteen and thirteen. Clear Load A Data Inputs B C D Count Up Count Down QA QB Outputs QC QD Carry Borrow 0 13 Clear Preset 14 15 0 Count Up 6 1 2 1 0 15 14 Count Down 13 HD74HC192/HD74HC193 DC Characteristics Ta = –40 to +85°C Ta = 25°C Item Symbol VCC (V) Min Typ Max Min Max Unit Input voltage VIH 2.0 1.5 — — 1.5 — V 4.5 3.15 — — 3.15 — 6.0 4.2 — — 4.2 — 2.0 — — 0.5 — 0.5 4.5 — — 1.35 — 1.35 6.0 — — 1.8 — 1.8 2.0 1.9 2.0 — 1.9 — 4.5 4.4 4.5 — 4.4 — 6.0 5.9 6.0 — 5.9 — 4.5 4.18 — — 4.13 — I OH = –4 mA 6.0 5.68 — — 5.63 — I OH = –5.2 mA 2.0 — 0.0 0.1 — 0.1 4.5 — 0.0 0.1 — 0.1 6.0 — 0.0 0.1 — 0.1 4.5 — — 0.26 — 0.33 I OL = 4 mA 6.0 — — 0.26 — 0.33 I OL = 5.2 mA VIL Output voltage VOH VOL Test Conditions V V V Vin = VIH or VIL I OH = –20 µA Vin = VIH or VIL I OL = 20 µA Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND Quiescent supply current I CC 6.0 — — 4.0 40 µA Vin = VCC or GND, Iout = 0 µA — 7 HD74HC192/HD74HC193 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = –40 to +85°C Ta = 25°C Item Symbol VCC (V) Min Typ Max Min Max Unit Maximum clock f max 2.0 — — 4 — 3 MHz 4.5 — — 20 — 16 6.0 — — 24 — 19 Propagation delay t PLH 2.0 — — 140 — 175 time 4.5 — 14 28 — 35 6.0 — — 24 — 30 2.0 — — 130 — 165 4.5 — 15 26 — 33 6.0 — — 22 — 28 2.0 — — 130 — 165 4.5 — 14 26 — 33 6.0 — — 22 — 28 2.0 — — 130 — 165 4.5 — 15 26 — 33 6.0 — — 22 — 28 2.0 — — 215 — 270 4.5 — 21 43 — 54 6.0 — — 37 — 46 2.0 — — 275 — 345 4.5 — 21 55 — 69 6.0 — — 47 — 59 2.0 — — 230 — 290 4.5 — 17 46 — 58 6.0 — — 39 — 49 2.0 — — 290 — 365 4.5 — 23 58 — 73 6.0 — — 49 — 62 2.0 — — 265 — 335 4.5 — 24 53 — 66 6.0 — — 45 — 56 2.0 80 — — 100 — 4.5 16 8 — 20 — 6.0 14 – — 17 — frequency t PHL t PLH t PHL t PLH t PHL t PLH t PHL t PHL Pulse width 8 tw ns Test Conditions Count up to Carry Count down to Borrow Count up or down to Q Load to Q Clear to Q ns HD74HC192/HD74HC193 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) (cont) Ta = –40 to +85°C Ta = 25°C Item Symbol VCC (V) Min Typ Max Min Max Unit Test Conditions Hold time th 2.0 5 — — 5 — ns Data to Load 4.5 5 –3 — 5 — 6.0 5 — — 5 — 2.0 100 — — 125 — ns Data to Load 4.5 20 4 — 25 — 6.0 17 — — 21 — 2.0 50 — — 65 — ns Clear to Clock 4.5 10 –1 — 13 — 6.0 9 — — 11 — Setup time Removal time t su t rem Output rise/fall t TLH 2.0 — — 75 — 95 time t THL 4.5 — 5 15 — 19 6.0 — — 13 — 16 — — 5 10 — 10 Input capacitance Cin ns pF 9 Unit: mm 19.20 20.00 Max 1 7.40 Max 9 6.30 16 8 1.3 0.48 ± 0.10 2.54 Min 5.06 Max 2.54 ± 0.25 0.51 Min 1.11 Max 7.62 + 0.13 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Weight (reference value) DP-16 Conforms Conforms 1.07 g Unit: mm 10.06 10.5 Max 9 1 8 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0.80 Max *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 5.5 16 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-16DA — Conforms 0.24 g Unit: mm 9.9 10.3 Max 9 1 8 0.635 Max *0.42 ± 0.08 0.40 ± 0.06 0.15 *0.22 ± 0.03 0.20 ± 0.03 1.27 0.11 0.14 +– 0.04 1.75 Max 3.95 16 0.10 6.10 +– 0.30 1.08 0° – 8° 0.67 0.60 +– 0.20 0.25 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-16DN Conforms Conforms 0.15 g Cautions 1. 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