HD74LVC374A Datasheet, PDF (1/8 Pages) Hitachi Semiconductor – Octal D-type Flip Flops with 3-state Outputs

HD74LVC374A
Octal D-type Flip Flops with 3-state Outputs
REJ03D0355–0400Z
(Previous ADE-205-113B (Z))
Rev.4.00
Jul. 27, 2004
Description
The HD74 LVC374A has eight edge trigger D type flip flops with three state outputs in a 20 pin package. Data at the
D inputs meeting set up requirements are transferred to the Q outputs on positive going transitions of the clock input.
When the clock input goes low, data at the D inputs will be retained at the outputs until clock input returns high again.
When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of
what signals are present at the other inputs and the state of the storage elements. Low voltage and high-speed operation
is suitable at the battery drive product (note type personal computer) and low power consumption extends the life of a
battery for long time operation.
Features
• V_CC = 2.0 V to 5.5 V
• All inputs V_IH (Max.) = 5.5 V (@V_CC = 0 V to 5.5 V)
• All outputs V_OUT (Max.) = 5.5 V (@V_CC = 0 V or output off state)
• Typical V_OL ground bounce < 0.8 V (@V_CC = 3.3 V, Ta = 25 °C)
• Typical V_OH undershoot > 2.0 V (@V_CC = 3.3 V, Ta = 25°C)
• High output current ±24 mA (@V_CC = 3.0 V to 5.5 V)
• Ordering Information
Part Name
Package Type
Package Code
HD74LVC374AFPEL
SOP–20 pin (JEITA) FP–20DAV
HD74LVC374ATELL
TSSOP–20 pin
TTP–20DAV
Note: Please consult the sales office for the above package availability.
Package
Abbreviation
FP
T
Taping Abbreviation
(Quantity)
EL (2,000 pcs/reel)
ELL (2,000 pcs/reel)
Function Table
Inputs
G
CK
D
H
X
X
L
↑
L
L
↑
H
L
L
X
H: High level
L: Low level
X: Immaterial
Z: High impedance
↑ : Low to high transition
Q₀: Level of Q before the indicated steady input conditions were established.
Output Q
Z
L
H
Q₀
Rev.4.00 Jul. 27, 2004 page 1 of 7