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74HCT7404 Scheda tecnica(PDF) 2 Page - NXP Semiconductors

Il numero della parte 74HCT7404
Spiegazioni elettronici  5-Bit x 64-word FIFO register; 3-state
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT7404 Scheda tecnica(HTML) 2 Page - NXP Semiconductors

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September 1993
2
Philips Semiconductors
Product specification
5-Bit x 64-word FIFO register; 3-state
74HC/HCT7404
FEATURES
• Synchronous or asynchronous operation
• 3-state outputs
• 30 MHz (typical) shift-in and shift-out rates
• Readily expandable in word and bit dimensions
• Pinning arranged for easy board layout: input pins
directly opposite output pins
• Output capability: driver (8 mA)
• ICC category: LSI.
APPLICATIONS
• High-speed disc or tape controller
• Communications buffer.
GENERAL DESCRIPTION
The 74HC/HCT7404 are high-speed Si-gate CMOS
devices specified in compliance with JEDEC standard
no.7A.
The “7404” is an expandable, First-In First-Out (FIFO)
memory organized as 64 words by 5 bits. A guaranteed
15 MHz data-rate makes it ideal for high-speed
applications. A higher data-rate can be obtained in
applications where the status flags are not used
(burst-mode).
With separate controls for shift-in (SI) and shift-out (SO),
reading and writing operations are completely
independent, allowing synchronous and asynchronous
data transfers. Additional controls include a master-reset
input (MR), an output enable input (OE) and flags. The
data-in-ready (DIR) and data-out-ready (DOR) flags
indicate the status of the device.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.
Note
1. For HC the condition is VI = GND to VCC.
For HCT the condition is VI = GND to VCC −1.5 V.
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
TYP.
UNIT
HC
HCT
tPHL/tPLH
propagation delay SO, SI to DIR and DOR
CL = 15 pF; VCC = 5 V
15
17
ns
fmax
maximum clock frequency
30
30
MHz
CI
input capacitance
3.5
3.5
pF
CPD
power dissipation capacitance per package
note 1
475
490
pF
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
74HC/HCT7404N
18
DIL
plastic
SOT102
74HC/HCT7404D
20
SO20
plastic
SOT163A


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