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NE521N Datasheet High-speed Dual-differential Comparator/sense Amp

Manufacturer: Philips Semiconductors (now NXP Semiconductors)

Overview: INTEGRATED CIRCUITS NE521 High-speed dual-differential parator/sense amp Product data Supersedes data of 1994 Aug 31 File under Integrated Circuits, IC11 Handbook 2001 Aug 03 Philips Semiconductors Philips.

General Description

14-Pin Plastic Dual In-Line Package (DIP) 14-Pin SO Package TEMPERATURE RANGE 0 °C to +70 °C 0 °C to +70 °C ORDER CODE NE521N NE521D DWG # SOT27-1 SOT108-1 EQUIVALENT SCHEMATIC V+ 14 R2 R1 R17 R20 R21 R25 Q4 – Q2 + Q10 Q1 Q3 R16 D7 D6 Q6 Q5 Q7 5 Q25 Q26 Q30 Q29 R24 6 Q28 4 2 1 Q9 Q8 Q13 Q11 R14 D2 R22 R23 Q27 7 R4 13 V– R8 Q16 12 11 + – Q18 R10 R5 R3 R15 R6 R7 Q19 R9 D3 Q36 R28 R29 Q35 Q17 Q15 Q14 D4 D5 Q22 Q23 Q24 8 R30 Q32 Q31 Q32 Q34 9 Q20 R18 Q21 R12 V+ R11 R19 R26 R27 R34 SL00243 Figure 2.

Equivalent Schematic 2001 Aug 03 2 853-0900 26834 Philips Semiconductors Product data High-speed dual-differential parator/sense amp NE521 BLOCK DIAGRAM (1) INPUT 1A (2) INPUT 1B (12) INPUT 2A (11) INPUT 2B LOGIC FUNCTIONS VID A +, B – VID ≤ –VOS –VOS < VID < VOS VID ≥ VOS X (9) OUTPUT 3Y (8) STROBE 2G STROBE S H H H L X STROBE G H H H X L OUTPUT (Y) L Undefined H H H OUTPUT 1Y STROBE 1G (4) (5) (6) STROBE S X SL00244 Figure 3.

Block Diagram ABSOLUTE MAXIMUM RATINGS SYMBOL V+ V– VIDR VIN Supply voltage Positive Negative Differential input voltage Input voltage mon mode Strobe/gate Maximu

Key Features

  • 12 ns maximum guaranteed propagation delay.
  • 20 µA maximum input bias current.
  • TTL compatible strobes and outputs.
  • Large common-mode input voltage range.
  • Operates from standard supply voltages.

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