1CY74FCT162240T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT16240T
CY74FCT162240T
SCCS027B - August 1994 - Revised September 2001
16-Bit Buffers/Line Drivers
Features
Functional Description
• Ioff supports partial-power-down mode operation
• 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
These 16-bit buffer/line drivers are used in memory driver,
clock driver, or other bus interface applications, where high
speed and low power are required. With flow-through pinout
and small shrink packaging, board layout is simplified. The
three-state controls are designed to allow 4-, 8-, or 16-bit
operation.
This device is fully specified for partial-power-down
applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device
when it is powered down.
• Industrial temperature range of –40˚C to +85˚C
• VCC = 5V ± 10%
CY74FCT16240T Features:
The CY74FCT16240T is ideally suited for driving
high-capacitance loads and low-impedance backplanes.
• 64 mA sink current, 32 mA source current
• Typical VOLP (ground bounce)
<1.0V at VCC = 5V, TA = 25˚C
The CY74FCT162240T has 24-mA balanced output drivers
with current limiting resistors in the outputs. This reduces the
need for external terminating resistors and provides for mini-
mal undershoot and reduced ground bounce. The
CY74FCT162240T is ideal for driving transmission lines.
CY74FCT162240T Features:
• Balanced output drivers: 24 mA
• Reduced system switching noise
• Typical VOLP (ground bounce)
<0.6V at VCC = 5V, TA= 25˚C
Logic Block Diagrams
Pin Configuration
SSOP/TSSOP
Top View
OE
A
OE
3
1
OE
Y
1
2
3
4
48
47
46
OE
1
2
1
A
1
1
1
A
1
3
1
1
Y
1
Y
3
1
1
1
1
Y
2
A
2
1
1
GND
Y
GND
A
45
44
43
A
A
3
3
2
1
1
2
Y
2
Y
2
3
3
1
3
5
6
1
3
Y
4
A
4
1
1
V
CC
V
CC
A
3
A
3
42
41
7
Y
3
Y
3
Y
A
1
2
2
1
2
2
8
Y
2
A
2
9
40
39
38
A
4
A
4
3
1
Y
4
Y
4
3
1
GND
GND
10
11
Y
A
3
2
2
3
2
2
FCT16240–3
FCT16240–1
Y
4
A
4
12
13
37
36
35
34
Y
A
1
3
3
1
3
3
OE
A
14
15
16
17
18
OE
A
Y
2
A
2
4
2
GND
Y
GND
A
33
32
31
30
29
28
27
26
25
3
3
3
3
3
3
4
4
4
1
2
1
Y
1
Y
4
2
1
Y
4
A
4
V
CC
V
CC
A
2
A
2
2
2
Y
2
Y
4
4
2
2
2
Y
1
A
1
19
20
21
22
23
24
4
4
4
Y
2
A
2
4
A
3
A
GND
Y
GND
A
3
Y
3
Y
3
4
4
3
4
4
3
Y
4
A
4
A
4
A
4
2
4
Y
4
Y
4
2
4
OE
OE
3
4
FCT16240–2
FCT16240–4
FCT16240–5
Copyright © 2001, Texas Instruments Incorporated