1CY74FCT2827T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT2827T
10-Bit Buffer
SCCS045 - May 1994 - Revised March 2000
Features
Functional Description
• Function and pinout compatible with FCT, F, and
AM29827 logic
• FCT-C speed at 5.0 ns max. (Com’l),
FCT-A speed at 8.0 ns max. (Com’l)
• 25Ω output series resistors to reduce transmission line
reflection noise
• Reduced VOH (typically = 3.3V) versions of equivalent
FCT functions
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-off disable feature
• ESD > 2000V
The FCT2827T 10-bit bus driver provides high-performance
bus interface buffering for wide data/address paths or buses
carrying parity. This 10-bit buffer has NAND-ed output enables for
maximum control flexibility. The FCT2827T is designed for
high-capacitance load drive capability, while providing low-capaci-
tance bus loading at both inputs and outputs. All inputs have clamp
diodesand all outputsare designedfor low-capacitancebus loading
in the high impedance state. On-chip termination resistors have
been added to the outputs to reduce system noise caused by re-
flections. The FCT2827T can be used to replace the FCT827T to
reduce noise in an existing design.
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
• Matched rise and fall times
• Fully compatible with TTL input and output logic levels
• Extended commercial temp. range of –40˚C to +85˚C
• Sink current
Source current
12 mA
15 mA
Pin Configurations
Logic Block Diagram
SOIC/QSOP
Top View
OE
V
CC
1
24
23
22
21
20
19
18
17
16
15
14
13
1
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
9
0
1
2
3
4
5
6
7
8
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
Y
0
2
Y
1
3
Y
2
4
Y
3
5
Y
4
6
Y
5
7
Y
6
8
Y
7
9
Y
8
10
11
12
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
OE OE
1
2
Y
9
FCT2827T–3
GND
OE
2
FCT2827T–2
Function Table[1]
Inputs
Outputs
Y
OE1
OE2
D
Function
L
L
L
L
L
H
L
H
Transparent
H
X
X
H
X
X
Z
Z
Three-State
Note:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care.
Copyright © 2000, Texas Instruments Incorporated