Document
® Integrated Device Technology, Inc.
FAST CMOS OCTAL TRANSPARENT LATCHES
IDT54/74FCT373/A/C IDT54/74FCT533/A/C IDT54/74FCT573/A/C
FEATURES
• IDT54/74FCT373/533/573 equivalent to FAST™ speed and drive
• IDT54/74FCT373A/533A/573A up to 30% faster than FAST
• Equivalent to FAST output drive over full temperature and voltage supply extremes
• IOL = 48mA (commercial) and 32mA (military) • CMOS power levels (1mW typ. static) • Octal transparent latch with 3-state output control • JEDEC standard pinout for DIP and LCC • Product available in Radiation Tolerant and Radiation
Enhanced versions • Military product compliant to MIL-STD-883, Class B
FUNCTIONAL BLOCK DIAGRAMS
IDT54/74FCT373 AND IDT54/74FCT573 D0 D1 D2
D3
DESCRIPTION
The IDT54/74FCT373/A/C, IDT54/74FCT533/A/C and IDT54/74FCT573/A/C are octal transparent latches built using an advanced dual metal CMOS technology. These octal latches have 3-state outputs and are intended for bus oriented applications. The flip-flops appear transparent to the data when Latch Enable (LE) is HIGH. When LE is LOW, the data that meets the set-up time is latched. Data appears on the bus
when the Output Enable (OE) is LOW. When OE is HIGH, the
bus output is in the high-impedance state.
D4 D5 D6 D7
D O
G
D O
G
D O
G
D O
G
D O
G
D O
G
D O
G
D O
G
LE
OE
IDT54/74FCT533 D0
O0 D1
O1 D2
O2 D3
O3 D4
O4 D5
O5 D6
O6 O7
2602 cnv* 01
D7
D O
G
D O
G
D O
G
D O
G
D O
G
D O
G
D O
G
D O
G
LE
OE
O0 O1 O2 O3 O4 O5 O6 O7
The IDT logo is a registered trademark of Integrated Device Technology, Inc. FAST is a trademark of National Semiconductor Co.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1992 Integrated Device Technology, Inc.
7.12
2602 cnv* 02
MAY 1992
DSC-4624/2
1
IDT54/74FCT373/533/573/A/C FAST CMOS OCTAL TRANSPARENT LATCHES
PIN CONFIGURATIONS
IDT54/74FCT373
OE O0 D0 D1
O1 O2 D2 D3
O3 GND
1 20
2 19 3 18
4 P20-1 17 5 D20-1 16 6 SO20-2 15
& 7 E20-1 14 8 13
9 12
10 11
VCC O7 D7 D6 O6 O5 D5 D4 O4 LE
DIP/SOIC/CERPACK TOP VIEW
IDT54/74FCT573
OE D0 D1 D2 D3 D4 D5 D6 D7 GND
1 20
2 19
3 18
4 P20-1 17
5 D20-1 16
6 SO20-2 15
7
& E20-1
14
8 13
9 12
10 11
VCC
O0 O1 O2 O3 O4 O5 O6 O7 LE
DIP/SOIC/CERPACK TOP VIEW
IDT54/74FCT533
OE O0 D0 D1 O1 O2 D2 D3 O3 GND
1 20
2 19
3 18
4 P20-1 17
5 D20-1 16
6 SO20-2 15
7
& E20-1
14
8 13
9 12
10 11
VCC O7 D7 D6 O6 O5 D5 D4 O4 LE
DIP/SOIC/CERPACK TOP VIEW
MILITARY AND COMMERCIAL TEMPERATURE RANGES
D0 O0 OE VCC O7
INDEX
3 2 20 19
D1 4
1 18 D7
O1 5
17 D6
O2
6
L20-2
16 O6
D2 7
15 O5
D3 8
14 D5
9 10 11 12 13
O3 GND
LE O4 D4
LCC TOP VIEW
D1 D0 OE VCC O0
INDEX
3 2 20 19
D2 4
1 18 O1
D3 5
17 O2
D4 6
L20-2
16 O3
D5 7
15 O4
D6 8
14 O5
9 10 11 12 13
D7 GND
LE O7 O6
LCC TOP VIEW
D0 O0 OE VCC O7
INDEX
3 2 20 19
D1 4
1 18 D7
O1 5
17 D6
O2 6
L20-2
16 O6
D2 7
15 O5
D3 8
14 D5
9 10 11 12 13
O3 GND
LE O4 D4
7.12
LCC TOP VIEW
2602 cnv* 03–08
2
IDT54/74FCT373/533/573/A/C FAST CMOS OCTAL TRANSPARENT LATCHE.