CY74FCT2827T Datasheet, PDF (1/6 Pages) Texas Instruments – 10-Bit Buffer

1CY74FCT2827T
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
CY74FCT2827T
SCCS045 - May 1994 - Revised March 2000
10-Bit Buffer
Features
• 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 V_OH (typically = 3.3V) versions of equivalent
FCT functions
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-off disable feature
• ESD > 2000V
• 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
Functional Description
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
diodes and all outputs are designed for low-capacitance bus 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.
Logic Block Diagram
Y₀
Y₁
Y₂
Y₃
Y₄
Y₅
Y₆
Y₇
Y₈
Y₉
D₀
D₁
D₂
D₃
D₄
D₅
D₆
D₇ D₈
D₉ OE₁ OE₂
FCT2827T–3
Pin Configurations
SOIC/QSOP
Top View
OE₁ 1
D₀ 2
D₁ 3
D₂ 4
D₃ 5
D₄ 6
D₅ 7
D₆ 8
D₇ 9
D₈ 10
D₉ 11
GND 12
24 VCC
23 Y0
22 Y1
21 Y2
20 Y3
19 Y4
18 Y5
17 Y6
16 Y7
15 Y8
14 Y9
13 OE2
FCT2827T–2
Function Table^[1]
Inputs
Outputs
OE₁
OE₂
D
L
L
L
L
L
H
Y
Function
L
Transparent
H
H
X
X
Z
Three-State
X
H
X
Z
Note:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care.
Copyright © 2000, Texas Instruments Incorporated