CD54/74HC540, CD74HCT540,
CD54/74HC541, CD54/74HCT541
Data sheet acquired from Harris Semiconductor
SCHS189C
January 1998 - Revised July 2004
High-Speed CMOS Logic
Octal Buffer and Line Drivers, Three-State
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 Non-
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.
Features
• ’HC540, CD74HCT540 . . . . . . . . . . . . . . . . . . . Inverting
[ /Title
(CD74
HC540
,
CD74
HCT54
0,
CD74
HC541
,
CD74
HCT54
• ’HC541, ’HCT541 . . . . . . . . . . . . . . . . . . . . . . Non-Inverting
• Buffered Inputs
• Three-State Outputs
• Bus Line Driving Capability
• Typical Propagation Delay = 9ns at V
CC
= 5V,
C
L
= 15pF, T
A
= 25
o
C
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55
o
C to 125
o
C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30% of V
CC
at V
CC
= 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
≤
1µA at V
OL
, V
OH
Ordering Information
PART NUMBER
CD54HC540F3A
CD54HC541F3A
CD54HCT541F3A
CD74HC540E
CD74HC540M
CD74HC540M96
CD74HC541E
CD74HC541M
CD74HC541M96
CD74HC541PW
CD74HC541PWR
CD74HCT540E
CD74HCT540M
CD74HCT540M96
CD74HCT541E
CD74HCT541M
CD74HCT541M96
TEMP. RANGE
(
o
C)
-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
PACKAGE
20 Ld CERDIP
20 Ld CERDIP
20 Ld CERDIP
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld TSSOP
20 Ld TSSOP
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
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
TI [ TEXAS INSTRUMENTS ]
