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HD74HC180 Datasheet

Part Number HD74HC180
Manufacturers Hitachi Semiconductor
Logo Hitachi Semiconductor
Description 8-bit Odd/Even Parity Generator/Checker
Datasheet HD74HC180 DatasheetHD74HC180 Datasheet (PDF)

HD74HC180 8-bit Odd/Even Parity Generator/Checker Description This universal, monolithic, 9-bit (8 data bits plus 1 parity bit) parity generator/checker features odd/even outputs and control inputs to facilitate operation in either odd or even parity applications. Depending on whether even or odd parity is being generated or checked, the even or odd inputs can be utilized as the parity of 9th-bit input. The wordlength capability is easily expanded by cascading. Features • • • • • High Speed Op.

  HD74HC180   HD74HC180






Part Number HD74HC182
Manufacturers Renesas
Logo Renesas
Description Look-Ahead Carry Generator
Datasheet HD74HC180 DatasheetHD74HC182 Datasheet (PDF)

HD74HC182 Look-Ahead Carry Generator REJ03D0586-0300 Rev.3.00 Jan 31, 2006 Description The HD74HC182 is a high-speed Carry Lockahead Generator. It is used with the HD74HC181 4-Bit Arithmetic Logic Unit to provide high-speed lockahead over World lengths of more than four bits. The device accepts up to four pairs of active-low Carry Propagate (P0, P1, P2, P3) and Carry Generate (G0, G1, G2, G3) signals and an active-high carries (Cn+x, Cn+y, Cn+z) across four groups of binary adders. The HD74HC18.

  HD74HC180   HD74HC180







Part Number HD74HC182
Manufacturers Hitachi Semiconductor
Logo Hitachi Semiconductor
Description Look-Ahead Carry Generator
Datasheet HD74HC180 DatasheetHD74HC182 Datasheet (PDF)

HD74HC182 Look-Ahead Carry Generator Description The HD74HC182 is a high-speed Carry Lockahead Generator. It is used with the HD74HC181 4-Bit Arithmetic Logic Unit to provide high-speed lockahead over World lengths of more than four bits. The device accepts up to four pairs of active-low Carry Propagate (P 0, P1, P 2, P 3) and Carry Generate (G0, G1, G 2, G3) signals and an active-high carries (C n+x, Cn+y, Cn+z) across four groups of binary adders. The HD74HC182 also has active-low Carry Propa.

  HD74HC180   HD74HC180







Part Number HD74HC181
Manufacturers Hitachi
Logo Hitachi
Description Arithmetic Logic Unit
Datasheet HD74HC180 DatasheetHD74HC181 Datasheet (PDF)

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  HD74HC180   HD74HC180







8-bit Odd/Even Parity Generator/Checker

HD74HC180 8-bit Odd/Even Parity Generator/Checker Description This universal, monolithic, 9-bit (8 data bits plus 1 parity bit) parity generator/checker features odd/even outputs and control inputs to facilitate operation in either odd or even parity applications. Depending on whether even or odd parity is being generated or checked, the even or odd inputs can be utilized as the parity of 9th-bit input. The wordlength capability is easily expanded by cascading. Features • • • • • High Speed Operation: 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 Inputs ∑ of H’s at A Thru H Even Odd Even Odd X X Even H H L L H L Odd L L H H H L Outputs ∑ Even H L L H L H ∑ Odd L H H L L H HD74HC180 Pin Arrangement G Inputs H Even Inputs Odd Σ Even Σ Odd GND 1 G 2 3 4 5 6 7 (Top view) H Even Odd Σ Even Σ Odd A F E D C B 14 VCC 13 F 12 E 11 D 10 C 9 8 B A Inputs Outputs Logic Diagram Even Odd A B C Σ Even D E F Σ Odd G H 2 HD74HC180 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.5 1.35 1.8 — — — — — 0.1 0.1 0.1 0.33 0.33 ±1.0 40 µA µA I OL = 4 mA I OL = 5.2 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –4 mA I OH = –5.2 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 1.5 — 3.15 — 4.2 — — — — — — — — — — .


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