Philips 74hc hct564 DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
For a complete data sheet, please also download:
•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT564
Octal D-type flip-flop; positive-edge
trigger; 3-state; inverting
Product specification
File under Integrated Circuits, IC06
December 1990
Philips Semiconductors Product specification
Octal D-type flip-flop; positive-edge
trigger; 3-state; inverting
FEATURES
• 3-state inverting outputs for bus oriented applications
• 8-bit positive-edge triggered register
• Common 3-state output enable input
• Independent register and 3-state buffer operation
• Output capability: bus driver
• ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT564 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
QUICK REFERENCE DATA
GND = 0 V; T
=25°C; tr=tf= 6 ns
amb
74HC/HCT564
The 74HC/HCT564 are octal D-type flip-flops featuring
separate D-type inputs for each flip-flop and inverting
3-state outputs for bus oriented applications. A clock (CP)
and an output enable
flip-flops.
The 8 flip-flops will store the state of their individual
D-inputs that meet the set-up and hold times requirements
on the LOW-to-HIGH CP transition.
When OE is LOW, the contents of the 8 flip-flops are
available at the outputs.
When OE is HIGH, the outputs go to the high impedance
OFF-state. Operation of the OE input does not affect the
state of the flip-flops.
The “564” is functionally identical to the “574” but has
inverting outputs. The “564” is functionally identical to the
“534”, but has a different pinning.
(OE) input are common to all
SYMBOL PARAMETER CONDITIONS
t
PHL/ tPLH
f
max
C
I
C
PD
propagation delay CP to Q
n
CL= 15 pF; VCC=5 V 15 16 ns
maximum clock frequency 127 62 MHz
input capacitance 3.5 3.5 pF
power dissipation capacitance per flip-flop notes 1 and 2 27 27 pF
Notes
1. C
is used to determine the dynamic power dissipation (PD in µW):
PD
PD=CPD× V
2
× fi+∑ (CL× V
CC
2
× fo) where:
CC
fi= input frequency in MHz
fo= output frequency in MHz
∑ (CL× V
2
× fo) = sum of outputs
CC
CL= output load capacitance in pF
VCC= supply voltage in V
2. For HC the condition is VI= GND to VCC; for HCT the condition is VI= GND to VCC− 1.5 V
ORDERING INFORMATION
“74HC/HCT/HCU/HCMOS Logic Package Information”
See
.
TYPICAL
UNIT
HC HCT
December 1990 2
Philips Semiconductors Product specification
Octal D-type flip-flop; positive-edge trigger;
74HC/HCT564
3-state; inverting
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1
2, 3, 4, 5, 6, 7, 8, 9 D
10 GND ground (0 V)
11 CP clock input (LOW-to-HIGH, edge-triggered)
19, 18, 17, 16, 15, 14, 13, 12
20 V
OE 3-state output enable input (active LOW)
to D
0
Q0 to Q
CC
7
7
data inputs
3-state flip-flop outputs
positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.
December 1990 3
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