SN74AHC8541 8-BIT INVERTING/NONINVERTING SCHMITT-TRIGGER BUFFERS W/3-STATE OUT datasheet (Texas Instruments) - 3

SN74AHC8541 www.ti.com
... SCLS716 – APRIL 2009
RECOMMENDED OPERATING CONDITIONS(1)
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VCC Supply voltage 2 5.5 V VCC = 2 V 1.5 VIH High-level input voltage VCC = 3.3 V ±0.3 V VCC × 0.7 V VCC = 5 V ±0.5 V VCC × 0.7 VCC = 2 V 0.5 VIL Low-level input voltage VCC = 3.3 V ±0.3 V VCC × 0.3 V VCC = 5 V ±0.5 V VCC × 0.3 VI Input voltage 0 5.5 V High or low state 0 VCC VO Output voltage V 3-state 0 5.5 VCC = 2 V –50 µA IOH High-level output current VCC = 3.3 V ±0.3 V –6 mA VCC = 5 V ±0.5 V –12 VCC = 2 V 50 µA IOL Low-level output current VCC = 3.3 V ±0.3 V 6 mA VCC = 5 V ±0.5 V 12 VCC = 3.3 V ±0.3 V 0 100 T/C, OE ns/V VCC = 5 V ±0.5 V 0 20 Input transition rise or Δt/ΔV fall rate VCC = 3.3 V ±0.3 V 0 3 D ms/V VCC = 5 V ±0.5 V 0 2 VCC = 3.3 V ±0.3 V 100 tpa Pulse reception time(2) ns VCC = 5 V ±0.5 V 60 TA Operating free-air temperature –40 85 °C (1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. (2) Buffer inputs D1 to D8 might accept no pulse after tpa period after receiving the first pulse edge. If the input state changes from H to L or L to H in this period, the corresponding output changes from L to H or H to L respectively, in tpa + tpd as delay time in worst-case scenario. Maximum input frequency, fmax, is calculated by the following formula: fmax = input pulse duty cycle/(tpa(min) + tpd(max)) when input pulse duty cycle <50% fmax = (1 – input pulse duty cycle)/(tpa(min) + tpd(max)) when input pulse duty cycle >50% Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): SN74AHC8541 Document Outline FEATURES DESCRIPTION ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS ELECTRICAL CHARACTERISTICS SWITCHING CHARACTERISTICS SWITCHING CHARACTERISTICS NOISE CHARACTERISTICS PARAMETER MEASUREMENT INFORMATION