Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT16841T
CY74FCT162841T
SCCS067 - July 1994 - Revised March 2000
20-Bit Latches
Features
Functional Description
• FCT-C speed at 5.5 ns (FCT16841T Com’l)
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for significantly improved
noise characteristics
• Typical output skew < 250 ps
• ESD > 2000V
The CY74FCT16841T and CY74FCT162841T are 20-bit
D-type latches designed for use in bus applications requiring
high speed and low power. These devices can be used as two
independent 10-bit latches, or as a single 10-bit latch, or as a
single 20-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 a power-off disable feature to allow live
insertion of boards.
• TSSOP (19.6-mil pitch) and SSOP (25-mil pitch)
packages
• Industrial temperature range of −40˚C to +85˚C
• VCC = 5V ± 10%
The CY74FCT16841T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
The CY74FCT162841T 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
CY74FCT162841T is ideal for driving transmission lines.
CY74FCT16841T Features:
• 64 mA sink current, 32 mA source current
• Typical VOLP (ground bounce) <1.0V at VCC = 5V,
TA = 25˚C
CY74FCT162841T Features:
• Balanced 24 mA output drivers
• Reduced system switching noise
• Typical VOLP (ground bounce) <0.6V at VCC = 5V,
TA= 25˚C
Pin Configuration
Logic Block Diagrams
SSOP/TSSOP
Top View
OE
1
OE
Q
LE
1
1
1
2
56
55
D
1
1
1
2
1
1
LE
1
Q
D
2
1
3
4
54
53
GND
GND
D
D
1
1
1
1
3
4
5
6
7
8
9
52
51
50
49
48
1
3
Q
Q
D
C
D
1
4
Q
1
1
V
CC
V
CC
Q
D
D
D
1
5
6
1
1
1
5
6
7
Q
1
Q
7
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
GND
Q
GND
D
TO 9 OTHER CHANNELS
1
1
8
9
FCT16841-1
1
1
1
8
Q
D
D
9
OE
2
Q
10
1
10
Q
1
D
D
D
2
2
2
2
1
2
3
LE
2
Q
2
2
3
Q
2
D
1
2
GND
D
GND
D
C
2
2
4
5
Q
4
Q
5
2
2
Q
1
2
D
D
Q
6
2
6
2
V
CC
V
CC
Q
D
7
2
7
8
2
2
D
8
Q
2
TO 9 OTHER CHANNELS
GND
GND
FCT16841-2
Q
9
D
D
2
2
2
2
9
Q
10
2
10
OE
LE
2
FCT16841-3
Copyright © 2000, Texas Instruments Incorporated