CD54/74HC540, CD74HCT540,
CD54/74HC541, CD54/74HCT541
Data sheet acquired from Harris Semiconductor
SCHS189C
High-Speed CMOS Logic
Octal Buffer and Line Drivers, Three-State
January 1998 - Revised July 2004
Features
Description
• ’HC540, CD74HCT540 . . . . . . . . . . . . . . . . . . . Inverting 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 Non-
• ’HC541, ’HCT541 . . . . . . . . . . . . . . . . . . . . . . Non-Inverting
[ /Title
(CD74
HC540
,
CD74
HCT54
0,
CD74
HC541
,
CD74
HCT54
Inverting Octal Buffers and Line Drivers with Three-State Out-
puts 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 imped-
ance state. For data output OE1 and OE2 both must be LOW.
• Buffered Inputs
• Three-State Outputs
• Bus Line Driving Capability
• Typical Propagation Delay = 9ns at V
o
= 5V,
CC
Ordering Information
C = 15pF, T = 25 C
L
A
TEMP. RANGE
o
• Fanout (Over Temperature Range)
PART NUMBER
CD54HC540F3A
CD54HC541F3A
CD54HCT541F3A
CD74HC540E
( C)
PACKAGE
20 Ld CERDIP
20 Ld CERDIP
20 Ld CERDIP
20 Ld PDIP
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
o
o
• Wide Operating Temperature Range . . . -55 C to 125 C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
CD74HC540M
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
CD74HC540M96
CD74HC541E
• HC Types
- 2V to 6V Operation
CD74HC541M
20 Ld SOIC
20 Ld SOIC
20 Ld TSSOP
20 Ld TSSOP
20 Ld PDIP
- High Noise Immunity: N = 30%, N = 30% of V
IL IH CC
CD74HC541M96
CD74HC541PW
CD74HC541PWR
CD74HCT540E
CD74HCT540M
CD74HCT540M96
CD74HCT541E
CD74HCT541M
CD74HCT541M96
at V
= 5V
CC
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
V = 0.8V (Max), V = 2V (Min)
IL IH
- CMOS Input Compatibility, I ≤ 1µA at V , V
OL OH
l
20 Ld SOIC
20 Ld SOIC
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © 2004, Texas Instruments Incorporated
1