3H374
fax id: 7051
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
16-Bit Registers
CY74FCT163LD2374
Features
• Lite Drive™ option for low noise applications
• 6 mA balanced drive outputs
• FCT-A speed at 6.5 ns
• Low power, pin-compatible replacement for LCX, LPT,
LVC, LVCH & LVT families
• 5V tolerant inputs and outputs*
• 6 mA & 24 mA balanced drive outputs
• Power-off disable outputs permits live insertion
• Edge-rate control circuitry for reduced noise
• FCT-C speed at 5.2 ns
• V = 3.0V to 3.6V
CC
• ESD (HBM) > 1100V
Functional Description
These devices are 16-bit D-type registers designed for use as
buffered registers in high-speed, low power bus applications.
These devices can be used as two independent 8-bit registers
or as a single 16-bit register by connecting the output Enable
(OE) and Clock (CLK) inputs. The outputs are 24-mA balanced
output drivers with current limiting resistors to reduce the need
for external terminating resistors, and provide for minimal un-
dershoot and reduced ground bounce. Flow-through pinout
and small shrink packaging aid in simplifying board layout.
• Latch-up performance exceeds JEDEC standard no. 17
• Typical output skew < 250 ps
• Industrial temperature range of –40°C to +85°C
• TSSOP (19.6-mil pitch) or SSOP (25-mil pitch)
• Typical
(ground bounce) performance exceeds Mil
V
olp
Std 883D
• V = 2.7V to 3.6V
CC
• ESD (HBM) > 2000V
CY74FCT163H374
The CY74FCT163H374 and CY74FCT163LDH374 have “bus
hold” on the data inputs, which retain the input’s last state
whenever the source driving the input goes to high impedance.
This eliminates the need for pull-up/down resistors and pre-
vents floating inputs.
• Bus hold on data inputs
• Eliminates the need for external pull-up or pull-down
resistors
• *Devices with bus hold are not recommended for trans-
lating rail-to-rail CMOS signals to 3.3V logic levels
The CY74FCT163374 and the CY74FCT16LD374 are
designed with inputs and outputs capable of being driven by
5.0V buses, allowing them to be used in mixed voltage
systems as translators. The outputs are also designed with a
power off disable feature enabling them to be used in
applications requiring live insertion.
Logic Block Diagrams CY74FCT163374, CY74FCT163H374,
CY74FCT163LD374, CY74FCT163LDH374
Pin Configuration
SSOP/TSSOP
Top View
1
2
3
4
48
47
46
OE
O
CLK
1
1
1
D
1
1
1
2
O
D
2
1
1
GND
O
GND
D
45
44
43
42
41
OE
OE
2
1
5
1
1
3
4
1
1
3
4
O
D
6
CLK
CLK
2
1
V
CC
V
CC
7
O
D
1
1
5
6
1
1
5
6
8
D
C
D
C
D
1
D
1
1
2
O
D
9
40
39
38
37
36
35
34
33
32
31
O
1
O
1
1
2
GND
GND
10
11
O
D
1
1
7
8
1
1
7
8
O
D
12
13
O
O
D
D
2
2
1
2
2
1
14
15
16
17
18
2
2
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
GND
GND
O
D
D
2
3
4
2
3
O
2
2
4
V
CC
V
CC
O
5
D
5
19
20
21
22
23
24
30
29
28
27
26
25
2
2
2
2
O
6
D
6
GND
O
GND
D
2
2
7
8
2
7
8
O
D
2
2
OE
CLK
2
Lite Drive is a trademark of Cypress Semiconductor Corporation.
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
•
CA 95134
•
408-943-2600
March 19, 1997 – Revised April 20, 1998