
20-Bit Buffers/Line Drivers
CY74FCT16827T
CY74FCT162827T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
SCCS064 - August 1994 - Revised March 2000
Copyright
2000, Texas Instruments Incorporated
1CY74FCT162827T
Features
FCT-E speed at 3.2 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
40C to +85C
V
CC
= 5V
±
10%
CY74FCT16827T Features:
64 mA sink current, 32 mA source current
Typical V
OLP
(ground bounce) <1.0V at V
CC
= 5V,
T
A
= 25C
CY74FCT162827T Features:
Balanced 24 mA output drivers
Reduced system switching noise
Typical V
OLP
(ground bounce) <0.6V at V
CC
= 5V,
T
A
= 25C
Functional Description
The CY74FCT16827T 20-bit buffer/line driver and the
CY74FCT162827T
20-bit
high-performance bus interface buffering for wide data/address
pathsorbusescarryingparity.Thesepartscanbeusedasasingle
20-bit buffer or two 10-bit buffers. Each 10-bit buffer has a pair of
NANDedOEforincreasedflexibility.Theoutputsaredesignedwith
a power-off disable feature to allow for live insertion of boards.
The
CY74FCT16827T
is
high-capacitance loads and low-impedance backplanes.
The CY74FCT162827T 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
CY74FCT162827T is ideal for driving transmission lines.
buffer/line
driver
provide
ideally
suited
for
driving
GND
Logic Block Diagrams
Pin Configuration
1
2
3
4
5
6
7
8
9
10
11
12
13
33
32
31
30
29
36
35
1
OE
1
1
Y
1
1
Y
2
GND
34
SSOP/TSSOP
Top View
1
Y
1
14
15
16
17
18
19
20
21
22
23
24
25
45
44
43
42
41
37
38
39
40
48
47
46
1
A
1
1
OE
1
1
OE
2
1
Y
3
1
Y
4
V
CC
1
Y
5
1
Y
6
1
Y
7
1
A
1
1
A
2
1
A
3
1
A
4
V
CC
1
A
5
1
OE
2
GND
1
A
8
2
Y
3
GND
2
Y
4
2
Y
5
2
Y
6
2
Y
1
2
Y
2
1
A
6
GND
1
Y
8
2
OE
1
FCT16827-1
TO 9 OTHER CHANNELS
2
A
1
2
OE
1
2
OE
2
TO 9 OTHER CHANNELS
2
Y
1
1
Y
9
1
Y
10
2
Y
9
2
Y
10
2
Y
7
2
Y
8
GND
V
CC
26
27
28
55
54
53
52
51
50
49
56
1
A
7
1
A
9
1
A
10
2
A
3
GND
2
A
4
2
A
5
2
A
6
2
A
2
2
A
9
2
A
10
2
OE
2
2
A
7
2
A
8
GND
V
CC
2
A
1
FCT16827-2
FCT16827-3