Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT16823T
CY74FCT162823T
SCCS062 - August 1994 - Revised March 2000
18-Bit Registers
CY74FCT162823T Features:
Features
• Balanced 24 mA output drivers
• Reduced system switching noise
• Typical VOLP (ground bounce) <0.6V at VCC = 5V,
TA= 25˚C
• FCT-E speed at 4.4 ns
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for significantly improved
noise characteristics
Functional Description
• Typical output skew < 250 ps
• ESD > 2000V
The CY74FCT16823T and the CY74FCT162823T 18-bit bus
interface registers are designed for use in high-speed,
low-power systems needing wide registers and parity. 18-bit
operation is achieved by connecting the control lines of the two
9-bit registers. Flow-through pinout and small shrink
packaging aids in simplifying board layout. The outputs 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%
CY74FCT16823T Features:
• 64 mA sink current, 32 mA source current
• Typical VOLP (ground bounce) <1.0V at VCC = 5V,
TA = 25˚C
The CY74FCT16823T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
The CY74FCT162823T 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
CY74FCT162823T is ideal for driving transmission lines.
Logic Block Diagrams
Pin Configuration
SSOP/TSSOP
OE
1
Top View
CLR
1
CLK
56
55
54
53
52
51
50
1
1
CLR
1
2
3
4
5
6
1
CLKEN
D
OE
1
CLK
1
Q
1
1
1
1
GND
Q
GND
D
CLKEN
1
1
1
2
3
1
1
2
3
Q
D
V
CC
V
CC
7
R
C
D
Q
D
1
1
1
4
5
1
1
4
49
48
47
46
8
Q
1
1
D
5
Q
9
D
Q
1
6
6
D
10
11
12
1
1
GND
GND
Q
D
D
1
7
1
1
1
7
8
45
44
43
42
41
Q
Q
1
1
8
9
13
14
FCT16823-1
D
9
TO 8 OTHER CHANNELS
D
D
Q
Q
Q
2
2
1
2
2
2
1
15
16
17
OE
2
2
2
3
D
2
3
40
39
38
CLR
2
GND
Q
GND
D
18
19
20
21
22
23
2
2
2
4
5
6
2
2
4
5
6
CLK
2
D
D
Q
Q
37
36
35
34
2
CLKEN
2
V
CC
V
CC
7
Q
Q
D
2
2
7
2
2
33
32
31
30
29
D
8
8
24
25
R
C
D
GND
Q
GND
D
Q
1
2
9
26
27
28
2
2
9
OE
CLKEN
CLK
2
2
2
D
2
2
CLR
2
FCT16823-3
FCT16823-2
TO 8 OTHER CHANNELS
Copyright © 2000, Texas Instruments Incorporated