74HCT7403D,518 NXP Semiconductors, 74HCT7403D,518 Datasheet - Page 13

• Manufacturer Part Number: 74HCT7403D,518
• Description: IC FIFO REGISTER 64X4 3ST 16SOIC
• Manufacturer: NXP Semiconductors
• Series: 74HCTr

Specifications of 74HCT7403D,518

• Function: Asynchronous, Synchronous
• Memory Size: 256 (64 x 4)
• Data Rate: 15MHz
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Access Time: -
• Other names: 74HCT7403D-T; 74HCT7403D-T; 933999390518

Philips Semiconductors
With FIFO full; SI held HIGH in anticipation of empty location
Notes to Fig.7
1. FIFO is initially full, shift-in is held HIGH
2. SO pulse; data in the output stage is unloaded, “bubble-up” process of empty location begins
3. DIR HIGH; when empty location reaches input stage, flag indicates FIFO is prepared for data input
4. DIR returns to LOW; data shift-in to empty location is complete, FIFO is full again
5. SI set LOW; necessary to complete shift-in process, DIR remains LOW, because FIFO is full.
September 1993
handbook, full pagewidth
4-Bit x 64-word FIFO register; 3-state
(1) HC : V
HCT: V
Fig.7 Waveforms showing bubble-up delay, SO input to DIR output and DIR output pulse width.
M
M
= 50%; V
= 1.3 V; V
I
= GND to V
I
SO INPUT
SI INPUT
DIR OUTPUT
= GND to 3 V.
CC
.
1
V M
(1)
2
V M
(1)
13
bubble - up
delay
t PLH
3
V M
(1)
t W
MGA660
4
5
74HC/HCT7403
Product specification