CD54/74HC374, CD54/74HCT374,
CD54/74HC574, CD54/74HCT574
Data sheet acquired from Harris Semiconductor
SCHS183C
February 1998 - Revised May 2004
High-Speed CMOS Logic Octal D-Type Flip-Flop,
3-State Positive-Edge Triggered
Description
The ’HC374, ’HCT374, ’HC574, and ’HCT574 are octal D-type
flip-flops with 3-state outputs and the capability to drive 15
LSTTL loads. The eight edge-triggered flip-flops enter data into
their registers on the LOW to HIGH transition of clock (CP). The
output enable (OE) controls the 3-state outputs and is
independent of the register operation. When OE is HIGH, the
outputs are in the high-impedance state. The 374 and 574 are
identical in function and differ only in their pinout arrangements.
Features
• Buffered Inputs
[ /Title
(CD74
HC374
,
CD74
HCT37
4,
CD74
HC574
,
CD74
HCT57
• Common Three-State Output Enable Control
• Three-State Outputs
• Bus Line Driving Capability
• Typical Propagation Delay (Clock to Q) = 15ns 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
- 2-V to 6-V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30% of V
CC
at V
CC
= 5V
• HCT Types
- 4.5-V to 5.5-V 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
CD54HC374F3A
CD54HC574F3A
CD54HCT374F3A
CD54HCT574F3A
CD74HC374E
CD74HC374M
CD74HC374M96
CD74HC574E
CD74HC574M
CD74HC574M96
CD74HCT374E
CD74HCT374M
CD74HCT374M96
CD74HCT574E
CD74HCT574M
CD74HCT574M96
CD74HCT574PWR
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 CERDIP
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
20 Ld TSSOP
NOTE: When ordering, use the entire part number. The suffixes
96 and R denote 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 ]
