Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modi铿乪d to remove devices not offered.
CY74FCT16841T
CY74FCT162841T
SCCS067 - July 1994 - Revised March 2000
20-Bit Latches
Functional Description
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.
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.
Features
鈥?FCT-C speed at 5.5 ns (FCT16841T Com鈥檒)
鈥?Power-off disable outputs permits live insertion
鈥?Edge-rate control circuitry for signi铿乧antly improved
noise characteristics
鈥?Typical output skew < 250 ps
鈥?ESD > 2000V
鈥?TSSOP (19.6-mil pitch) and SSOP (25-mil pitch)
packages
鈥?Industrial temperature range of
鈭?0藲C
to +85藲C
鈥?V
CC
= 5V
卤
10%
CY74FCT16841T Features:
鈥?64 mA sink current, 32 mA source current
鈥?Typical V
OLP
(ground bounce) <1.0V at V
CC
= 5V,
T
A
= 25藲C
CY74FCT162841T Features:
鈥?Balanced 24 mA output drivers
鈥?Reduced system switching noise
鈥?Typical V
OLP
(ground bounce) <0.6V at V
CC
= 5V,
T
A
= 25藲C
Pin Configuration
Logic Block Diagrams
1
OE
1
OE
1
Q
1
1
LE
1
D
1
1
Q
2
SSOP/TSSOP
Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1
LE
1
D
1
1
D
2
GND
D
1
Q
1
1
Q
3
1
Q
4
GND
1
D
3
1
D
4
V
CC
1
Q
5
1
Q
6
1
Q
7
V
CC
1
D
5
1
D
6
1
D
7
C
GND
TO 9 OTHER CHANNELS
2
OE
GND
1
D
8
1
D
9
1
D
10
2
D
1
2
D
2
2
D
3
FCT16841-1
1
Q
8
1
Q
9
1
Q
10
2
Q
1
2
LE
2
D
1
2
Q
2
2
Q
3
D
2
Q
1
GND
2
Q
4
2
Q
5
2
Q
6
GND
2
D
4
2
D
5
2
D
6
C
V
CC
2
Q
7
2
Q
8
V
CC
2
D
7
2
D
8
TO 9 OTHER CHANNELS
FCT16841-2
GND
2
Q
9
2
Q
10
2
OE
GND
2
D
9
2
D
10
2
LE
FCT16841-3
Copyright
漏
2000, Texas Instruments Incorporated
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3
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