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CD74HC540E
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CDx4HC(T)541 High-Speed CMOS Logic Octal Buffer and Line Drivers, Three-State
1 Features
• ’HC540, CD74HCT540: inverting
• ’HC541, ’HCT541: non-inverting
• Buffered inputs
• Three-state outputs
• Bus line driving capability
• Typical propagation delay = 9 ns at VCC = 5 V,
CL = 15 pF, TA = 25℃
• Fanout (over temperature range)
– Standard outputs: 10 LSTTL loads
– Bus driver outputs: 15 LSTTL loads
• Wide operating temperature range: –55 to 125℃ ℃
• Balanced propagation delay and transition times
• Significant power reduction compared to LSTTL
Logic ICs
• HC types
– 2 V to 6 V operation
– High noise immunity: NIL = 30%, NIH = 30% of
VCC at VCC = 5 V
• HCT types
– 4.5 V to 5.5 V operation
– Direct LSTTL input logic compatibility,
VIL = 0.8 V (max), VIH = 2 V (min)
– CMOS input compatibility, II ≤ 1 μA at VOL, VOH
2 Description
The ’HC540 and CD74HCT540 are Inverting Octal
Buffers and Line Drivers with Three-State Outputs
and the capability to drive 15 LSTTL loads.
The ’HC541 and ’HCT541 are Noninverting Octal
Buffers and Line Drivers with Three-State Outputs
that can drive 15 LSTTL loads. The Output Enables
(OE1) and (OE2) control the Three-State Outputs. If
either OE1 or OE2 is HIGH the outputs will be in the
high impedance state. For data output OE1 and OE2
both must be LOW.
Device Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
CD74HC540M SOIC (20) 12.80 mm × 7.50 mm
CD74HC540E PDIP (20) 25.40 mm × 6.35 mm
CD54HC540F3A CDIP (20) 26.92 mm × 6.92 mm
CD74HC541M SOIC (20) 12.80 mm × 7.50 mm
CD74HC541E PDIP (20) 25.40 mm × 6.35 mm
CD54HC541F CDIP (20) 26.92 mm × 6.92 mm
CD74HCT540M SOIC (20) 12.80 mm × 7.50 mm
CD74HCT540E PDIP (20) 25.40 mm × 6.35 mm
CD74HCT541M SOIC (20) 12.80 mm × 7.50 mm
CD74HCT541E PDIP (20) 25.40 mm × 6.35 mm
CD54HCT541F CDIP (20) 26.92 mm × 6.92 mm
CD74HCT541PW TSSOP (20) 6.50 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Functional Diagram
CD54HC540, CD74HC540, CD54HC541, CD74HC541
CD74HCT540, CD54HCT541, CD74HCT541
SCHS189D – JANUARY 1998 – REVISED JANUARY 2022
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | Inte kategoriserad |
| Modell: | CD74HC540E |
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