CD74HC374 Datasheet, PDF (1/9 Pages) Texas Instruments – High Speed CMOS Logic Octal D-Type Flip-Flop, Three-State Positive-Edge Triggered

Data sheet acquired from Harris Semiconductor
SCHS183
February 1998
CD74HC374, CD74HCT374,
CD74HC574, CD74HCT574
High Speed CMOS Logic Octal D-Type Flip-Flop,
Three-State Positive-Edge Triggered
[ /Title
(CD74
HC374
,
CD74
HCT37
4,
CD74
HC574
,
CD74
HCT57
Features
Description
• Buffered Inputs
• 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^oC
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55^oC to 125^oC
• 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
The Harris CD74HC374, CD74HCT374, CD74HC574 and
CD74HCT574 are Octal D-Type Flip-Flops with Three-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 three-state outputs and is independent of
the register operation. When Output Enable (OE) is HIGH the
outputs will be in the high impedance state. The 374 and 574
are identical in function and differ only in their pinout
arrangements.
Ordering Information
PART NUMBER TEMP. RANGE (^oC) PACKAGE
PKG.
NO.
CD74HC374E
-55 to 125
20 Ld PDIP E20.3
CD74HCT374E
-55 to 125
20 Ld PDIP E20.3
CD74HCT574E
-55 to 125
20 Ld PDIP E20.3
CD74HC574E
-55 to 125
20 Ld PDIP E20.3
CD74HC574M
-55 to 125
20 Ld SOIC M20.3
CD74HC374M
-55 to 125
20 Ld SOIC M20.3
CD74HCT374M
-55 to 125
20 Ld SOIC M20.3
CD74HCT574M
-55 to 125
20 Ld SOIC M20.3
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local sales office or
Harris customer service for ordering information.
Pinouts
CD74HC374, CD74HCT374
(PDIP, SOIC)
TOP VIEW
CD74HCT574
(PDIP, SOIC)
TOP VIEW
OE 1
Q0 2
D0 3
D1 4
Q1 5
Q2 6
D2 7
D3 8
Q3 9
GND 10
20 V_CC
19 Q7
18 D7
17 D6
16 Q6
15 Q5
14 D5
13 D4
12 Q4
11 CP
OE 1
D0 2
D1 3
D2 4
D3 5
D4 6
D5 7
D6 8
D7 9
GND 10
20 V_CC
19 Q0
18 Q1
17 Q2
16 Q3
15 Q4
14 Q5
13 Q6
12 Q7
11 CP
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1998
1
File Number 1663.1