HD74HC77 Datasheet, PDF (1/7 Pages) Hitachi Semiconductor – 4-bit Bistable Latch

HD74HC77
4-bit Bistable Latch
REJ03D0552-0200
(Previous ADE-205-424)
Rev.2.00
Oct 06, 2005
Description
The HD74HC77 is ideally suited for use as temporary storage for binary information between processing units and
input/output or indicator units. Information present at a data (D) input is transferred to the Q output when the enable
(G) is high and the Q output will follow the data input as long as the enable remains high. When the enable goes low
the information (that was present at the data input at the time the transition occurred) is retained at the Q output until the
enable is permitted to go high.
Features
• High Speed Operation: t_pd (D to Q) = 12 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 2 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC77P
DILP-14 pin
PRDP0014AB-B
(DP-14AV)
P
HD74HC77FPEL SOP-14 pin (JEITA)
PRSP0014DF-B
(FP-14DAV)
FP
HD74HC77RPEL SOP-14 pin (JEDEC) ^PRSP0014DE-A RP
(FP-14DNV)
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
Function Table
Data
L
H
X
H : High level
L : Low level
X : Irrelevant
Inputs
Enable G
H
H
L
Output
Q
L
H
No change
Rev.2.00, Oct 06, 2005 page 1 of 6