Document
TC74VHC574F/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC574F, TC74VHC574FK
Octal D-Type Flip Flop with 3-State Output
The TC74VHC574 is advanced high speed CMOS OCTAL FLIP-FLOP with 3-STATE OUTPUT fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.
This 8-bit D-type flip-flop is controlled by a clock input (CK) and an output enable input ( OE ).
When the OE input is high, the eight outputs are in a high impedance state.
An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.
Features
High speed: fmax = 180 MHz (typ.) at VCC = 5 V Low power dissipation: ICC = 4 A (max) at Ta = 25°C High noise immunity: VNIH = VNIL = 28% VCC (min) Power down protection is provided on all inputs. Balanced propagation delays: tpLH tpHL Wide operating voltage range: VCC (opr) = 2 to 5.5 V Low noise: VOLP = 1.0 V (max) Pin and function compatible with 74ALS574
TC74VHC574F
TC74VHC574FK
Weight SOP20-P-300-1.27A VSSOP20-P-0030-0.50
: 0.22 g (typ.) : 0.03 g (typ.)
© 2019
1
Toshiba Electronic Devices & Storage Corporation
Start of commercial production
1991-11
2019-01-31
Pin Assignment
IEC Logic Symbol
TC74VHC574F/FK
1 D0 2 D1 3 D2 4 D3 5 D4 6 D5 7 D6 8 D7 9 GND 10
(top view)
20 VCC 19 Q0 18 Q1 17 Q2 16 Q3 15 Q4 14 Q5 13 Q6 12 Q7 11 CK
(1) CK (11)
EN C1
D0 (2) 1D D1 (3) D2 (4) D3 (5) D4 (6) D5 (7) D6 (8) D7 (9)
(19) Q0 (18) Q1 (17) Q2 (16) Q3 (15) Q4 (14) Q5 (13) Q6 (12) Q7
Truth Table
Inputs
OE CK D
H
X
X
L
X
L
L
L
H
X: Don’t care Z: High impedance Qn: No change
Output
Z Qn L H
System Diagram
D0 2
D
D1 3
D
D2 4
D
D3 5
D
D4 6
D
D5 7
D
D6 8
D
D7 9
D
11 CK
CK
CK
CK
CK
CK
CK
CK
CK
1
19
18
17
16
15
14
13
12
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
© 2019
2
Toshiba Electronic Devices & Storage Corporation
2019-01-31
Absolute Maximum Ratings (Note)
TC74VHC574F/FK
Characteristics
Symbol
Rating
Unit
Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature
VCC VIN VOUT IIK IOK IOUT ICC PD Tstg
−0.5 to 7.0
V
−0.5 to 7.0
V
−0.5 to VCC + 0.5
V
−20
mA
±20
mA
±25
mA
±75
mA
180
mW
−65 to 150
°C
Note:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. opera.