16-Bit Latches
CY74FCT16373T
CY74FCT162373T
SCCS054 - August 1994 - Revised March 2000
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
Copyright © 2000, Texas Instruments Incorporated
Features
• FCT-E speed at 3.4 ns
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for significantly improved
noise characteristics
• Typical output skew < 250 ps
• ESD > 2000V
• TSSOP (19.6-mil pitch) and SSOP (25-mil pitch)
packages
• Industrial temperature range of - 40˚C to +85˚C
•V
CC
= 5V – 10%
CY74FCT16373T Features:
• 64 mA sink current, 32 mA source current
• Typical V
OLP
(ground bounce) <1.0V at V
CC
= 5V,
T
A
= 25˚C
CY74FCT162373T Features:
• Balanced 24 mA output drivers
• Reduced system switching noise
• Typical V
OLP
(ground bounce) <0.6V at V
CC
= 5V,
T
A
= 25˚C
Functional Description
CY74FCT16373T and CY74FCT162373T are 16-bit D-type
latches designed for use in bus applications requiring high
speed and low power. These devices can be used as two
independent 8-bit latches or as a single 16-bit latch by
connecting the Output Enable (OE) and Latch (LE) inputs.
Flow-through pinout and small shrink packaging aid in
simplifying board layout. The output buffers are designed with
power-off disable feature that allows live insertion of boards.
The CY74FCT16373T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
The CY74FCT162373T has 24-mA balanced output drivers
with current limiting resistors in the outputs. This reduces the
need for external terminating resistors and provides for
minimal undershoot and reduced ground bounce. The
CY74FCT162373T is ideal for driving transmission lines.
Logic Block Diagrams
Pin Configuration
D
C
1
OE
FCT162373-1
1
LE
1
D
1
1
O
1
TO 7 OTHERCHANNELS
D
C
2
OE
FCT162373-2
2
LE
2
D
1
2
O
1
GND
1
2
3
4
5
6
7
8
9
10
11
12
33
32
31
30
29
25
26
27
28
36
35
1
OE
34
SSOP/TSSOP
Top View
13
14
15
16
17
18
19
20
21
22
23
24
45
44
43
42
41
37
38
39
40
48
47
46
1
O
1
1
O
2
1
O
3
1
O
4
1
D
1
1
D
2
1
D
3
1
D
4
1
LE
GND
GND
V
CC
1
O
7
1
O
8
1
O
5
1
O
6
1
D
5
1
D
6
1
D
7
1
D
8
V
CC
GND
GND
2
O
3
2
O
4
2
O
1
2
O
2
2
D
1
2
D
2
2
D
3
2
D
4
GND
GND
V
CC
2
O
7
2
O
8
2
O
5
2
O
6
2
D
5
2
D
6
2
D
7
2
D
8
V
CC
GND
2
OE
2
LE
FCT162373-3
TO 7 OTHERCHANNELS