HD74HC74 HITACHI, HD74HC74 Datasheet

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HD74HC74

Manufacturer Part Number
HD74HC74
Description
Dual D-type Flip-Flops with Preset and Clear
Manufacturer
HITACHI
Datasheet

Specifications of HD74HC74

Dc
N/A

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Description
The flip-flop has independent data, preset, clear, and clock inputs and Q and Q outputs. The logic level
present at thte data input is transferred to the output during the positive going transition to the clock pulse.
Preset and clear are independent of the clock and accomplished by a low level at the appropriate input.
Features
Function Table
Inputs
Preset
L
H
L
H
H
H
H
H
Note:
High Speed Operation: t
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
Low Input Current: 1 µA max
Low Quiescent Supply Current: I
1. Q and Q will remain HIGH as long as Preset and Clear are Low, but Q and Q are unpredictable,
if Preset and Clear go HIGH simultaneously.
Dual D-type Flip-Flops (with Preset and Clear)
Clear
H
L
L
H
H
H
H
H
pd
(Clock to Q or Q) = 14 ns typ (C
CC
= 2 to 6 V
Clock
X
X
X
L
H
CC
HD74HC74
(static) = 2 µA max (Ta = 25°C)
Data
X
X
X
H
L
X
X
X
L
= 50 pF)
Outputs
Q
H
L
H*
H
L
no change
no change
no change
1
Q
L
H
H*
L
H
no change
no change
no change
1

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HD74HC74 Summary of contents

Page 1

... and Q will remain HIGH as long as Preset and Clear are Low, but Q and Q are unpredictable, Note: if Preset and Clear go HIGH simultaneously. HD74HC74 = (static µA max (Ta = 25°C) CC Clock Data ...

Page 2

... HD74HC74 Pin Arrangement 1CLR 1D 1CK 1PR 1Q 1Q GND Logic Diagram (1/2) PR CLR CLR CLR (Top view 2CLR 2D 2CK 2PR ...

Page 3

... HD74HC74 Unit Test Conditions Vin = Vin = 1.0 A Vin = V or GND ...

Page 4

... HD74HC74 AC Characteristics ( pF, Input t L Item Symbol V Maximum clock f 2.0 max frequency 4.5 6.0 Propagation delay t 2.0 PLH time t 4.5 PHL 6.0 2.0 4.5 6.0 Setup time t 2.0 su 4.5 6.0 Hold time t 2.0 h 4.5 6.0 Removal time t 2.0 rem 4.5 6.0 Pulse width t 2.0 w 4.5 6.0 Output rise/fall t 2.0 TLH time t 4.5 THL 6.0 Input Capacitance Cin — ns –40 to ...

Page 5

... Max 14 1 1.30 2.39 Max 2.54 0.25 0.48 0. 0.25 0 – 15 Hitachi Code JEDEC EIAJ Weight (reference value) Unit: mm 7.62 + 0.10 – 0.05 DP-14 Conforms Conforms 0.97 g ...

Page 6

... Max 14 1 1.42 Max 1.27 *0.42 0.08 0.40 0.06 *Dimension including the plating thickness Base material dimension 8 7 7.80 0.70 0.15 0.12 M Hitachi Code JEDEC EIAJ Weight (reference value) + 0.20 – 0.30 1.15 0 – 8 0.20 FP-14DA — Conforms 0.23 g Unit: mm ...

Page 7

... Max 8 7 0.635 Max 0.06 0.15 0. 0.10 6.10 – 0.30 1.08 0 – 0.67 0.60 – 0.20 Hitachi Code FP-14DN JEDEC Conforms EIAJ Conforms Weight (reference value) 0.13 g Unit: mm ...

Page 8

... Max 14 1 +0.08 *0.22 –0.07 0.20 0.06 0.83 Max *Dimension including the plating thickness Base material dimension 8 7 0.65 0.13 M 6.40 0.20 0.10 1.0 0 – 8 0.50 0.10 Hitachi Code TTP-14D JEDEC — EIAJ — Weight (reference value) 0.05 g Unit: mm ...

Page 9

... Cautions 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document ...

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