HD74HC292/HD74HC294 Programmable Frequency Divider/Digital Timer ADE-205-486 (Z) 1st. Edition Sep. 2000 Description This device divides the incoming clock frequency by a number (a power of 2) that is preset by the Programming inputs. It has two Clock inputs, either of which may be used as a clock inhibit. The device also has an active-low Reset, which initializes the internal flip-flop states. Test Point outputs (TP1, TP2, TP3) are provided with HD74HC292 to facilitate incoming inspections. Test Point output is provided with HD74HC294 to facilitate incoming inspections. Features • • • • • High Speed Operation: tpd (Clock to Q) = 16 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) Function Table CLR CLK1 CLK2 Q Output Mode L X X Cleared to L L Count H H L Count H H X Inhibit H X H Inhibit HD74HC292/HD74HC294 HD74HC292 Programming Inputs Frequency Division Q Out TP1 TP2 TP3 E D C B A Binary Decimal L L L L L Inhibit Inhibit Inhibit Inhibit Inhibit Inhibit Inhibit Inhibit L L L L H Inhibit Inhibit Inhibit Inhibit Inhibit Inhibit Inhibit Inhibit H L 2 4 9 512 2 17 131,072 24 16,777,216 2 17 24 16,777,216 2 17 24 16,777,216 2 17 24 16,777,216 2 17 24 16,777,216 2 17 24 16,777,216 2 17 2 4 2 17 2 4 2 17 4 16 2 17 4 16 2 17 6 64 2 17 6 64 8 256 8 256 2 10 1,024 2 10 1,024 12 4,096 12 4,096 2 14 16,384 2 14 16,384 2 16 65,536 2 16 65,536 2 18 262,144 2 18 262,144 2 20 1,048,576 2 20 1,048,576 22 4,194,304 22 4,194,304 24 16,777,216 24 16,777,216 L L L L L L L L L L L L L L H H H H H H H H H H H H H H H H 2 L L L L H H L H L L H L L H L H H L L H H H H L H L H L H L L L L H H L H H H H L H H L L H H H H L H H H H L L L L L L L L L L L H H L H H L H L L H L L H L H H L L H H H H L H L H L H L L L L H H L H H H H L H H L L H H H H L H H H H 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 17 2 18 2 19 2 20 2 21 2 22 2 23 2 24 2 25 2 26 2 27 2 28 2 29 2 30 2 31 2 Binary Decimal Binary Decimal 8 16 32 64 128 256 512 1,024 2,048 4,096 8,192 16,384 32,768 65,536 131,072 262,144 524,288 1,048,576 2,097,152 4,194,304 8,388,608 16,777,216 33,554,432 67,108,864 134,217,728 268,435,456 536,870,912 1,073,741,824 2,147,483,648 2 9 2 2 9 2 9 2 9 9 2 9 2 9 2 9 2 9 2 9 2 9 2 2 9 2 9 2 9 9 2 9 2 9 2 9 2 9 2 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 Disabled LOW Disabled LOW 2 3 2 3 2 5 5 2 7 2 7 2 9 2 9 2 8 8 32 32 128 128 512 512 Binary Decimal 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 Disabled LOW Disabled LOW 3 2 3 2 5 2 5 2 7 2 7 2 9 2 9 2 2 11 2 11 13 2 13 2 2 15 2 15 2 17 2 17 8 8 32 32 128 128 512 512 2,048 2,048 8,192 8,192 32,768 32,768 131,072 131,072 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 HD74HC292/HD74HC294 HD74HC294 Programming Inputs Frequency Division Q Output TP Output D C B A L L L L Inhibit Inhibit Inhibit Inhibit L L L H Inhibit Inhibit Inhibit Inhibit L 2 2 4 9 512 2 3 9 512 2 4 2 9 512 2 5 2 9 512 2 6 64 2 9 512 2 7 128 2 8 256 22 4 2 9 512 3 8 4 16 5 32 6 64 7 128 2 8 256 2 9 512 L L L L L L H H H H H H H H L L H H H H L L L L H H H H H H L L H H L L H H L L H H H L H L H L H L H L H L H Binary Decimal 2 10 2 11 2 12 2 13 2 14 2 15 Binary 8 16 32 1,024 2,048 4,096 8,192 16,384 32,768 Decimal 2 2 Disabled LOW 2 2 2 2 2 3 HD74HC292/HD74HC294 Pin Arrangement HD74HC292 B 1 16 VCC E 2 15 C TP1 3 14 D CLK1 4 13 TP3 CLK2 5 12 NC TP2 6 11 CLR Q 7 10 A GND 8 9 NC (Top view) HD74HC294 B 1 16 VCC A 2 15 C TP 3 14 D CLK1 4 13 NC CLK2 5 12 NC NC 6 11 CLR Q 7 10 NC GND 8 9 NC (Top view) 4 HD74HC292/HD74HC294 Logic Diagram HD74HC292 CLR CLK1 R CLK2 R CK R R MC R R TP1 CK 0 1 14 13 D D D R R MC R CK D D D R TP2 D 12 11 10 9 A B 2 C D E 4 R R MC D 8 6 R R TP3 R R Q CK D D 8 7 6 5 R R MC CK D D D 4 3 2 5 HD74HC292/HD74HC294 HD74HC294 CLR CLK1 CLK2 0 1 14 13 12 11 10 9 A B C D 1 TP 8 2 4 8 7 6 5 4 3 2 6 Q HD74HC292/HD74HC294 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 HD74HC292/HD74HC294 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 — — 5 — 4 MHz 4.5 — — 27 — 21 6.0 — — 31 — 24 Propagation delay t PLH 2.0 — — 600 — 750 time 4.5 — 16 120 — 150 6.0 — — 100 — 125 2.0 100 — — 125 — 4.5 20 –4 — 25 — 6.0 17 — — 21 — 2.0 80 — — 100 — 4.5 16 14 — 20 — 6.0 14 – — 17 — frequency Removal time Pulse width t rem tw 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 8 Cin ns ns ns ns pF Test Conditions Clock to output HD74HC292/HD74HC294 Package Dimensions Unit: mm 19.20 20.00 Max 6.30 9 1 7.40 Max 16 8 1.3 0.48 ± 0.10 7.62 2.54 Min 5.06 Max 2.54 ± 0.25 0.51 Min 1.11 Max + 0.13 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Mass (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 Mass (reference value) FP-16DA — Conforms 0.24 g 9 HD74HC292/HD74HC294 Cautions 1. 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Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products. Hitachi, Ltd. Semiconductor & Integrated Circuits. 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