74HC534 Datasheet, PDF (2/13 Pages) NXP Semiconductors – Octal D-type flip-flop; positive edge-trigger; 3-state; inverting

Philips Semiconductors
Octal D-type flip-flop; positive edge-trigger;
3-state; inverting
Product specification
74HC/HCT534
FEATURES
• 3-state inverting outputs for bus oriented applications
• 8-bit positive, edge-triggered register
• Common 3-state output enable input
• Output capability: bus driver
• I_CC category: MSI.
GENERAL DESCRIPTION
The 74HC/HCT534 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.
The 74HC/HCT534 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 (OE) input are common to all
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 “534” is functionally identical to the “374”, but has
inverted outputs.
QUICK REFERENCE DATA
GND = 0 V; T_amb = 25 °C; t_r = t_f = 6 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
HC
HCT
t_PHL/ t_PLH
propagation delay CP to Q_n
C_L = 15 pF; V_CC = 5 V 12
13
f_max
maximum clock frequency
61
40
C_I
input capacitance
3.5
3.5
C_PD
power dissipation capacitance per flip-flop notes 1 and 2
19
19
Notes
1. C_PD is used to determine the dynamic power dissipation (P_D in µW):
P_D = C_PD × V_CC2 × f_i + ∑ (C_L × V_CC2 × f_o) where:
f_i = input frequency in MHz.
f_o = output frequency in MHz.
∑ (C_L × V_CC2 × f_o) = sum of outputs.
C_L = output load capacitance in pF.
V_CC = supply voltage in V.
2. For HC the condition is V_I = GND to V_CC; for HCT the condition is V_I = GND to V_CC − 1.5 V.
UNIT
ns
MHz
pF
pF
ORDERING INFORMATION
TYPE
NUMBER
74HC534
74HC534
74HCT534
74HCT534
NAME
SO20
DIP20
SO20
DIP20
PACKAGE
DESCRIPTION
plastic small outline package; 20 leads; body width 7.5 mm
plastic dual in-line package; 20 leads (300 mil)
plastic small outline package; 20 leads; body width 7.5 mm
plastic dual in-line package; 20 leads (300 mil)
VERSION
SOT163-1
SOT146-1
SOT163-1
SOT146-1
1998 Apr 10
2