Datasheet

CY54FCT827T, CY74FCT827T
10-BIT BUFFERS
WITH 3-STATE OUTPUTS
SCCS034A – SEPTEMBER 1994 – REVISED OCTOBER 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Function, Pinout, and Drive Compatible
With FCT, F, and AM29827 Logic
Reduced V
OH
(Typically = 3.3 V) Versions
of Equivalent FCT Functions
Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
I
off
Supports Partial-Power-Down Mode
Operation
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
3-State Outputs
Matched Rise and Fall Times
Fully Compatible With TTL Input and
Output Logic Levels
CY54FCT827T
– 32-mA Output Sink Current
– 12-mA Output Source Current
CY74FCT827T
– 64-mA Output Sink Current
– 32-mA Output Source Current
description
The ’FCT827T devices are 10-bit bus drivers that
provide high-performance bus-interface buffering
for wide data/address paths or buses carrying
parity. The 10-bit buffers have NANDed output
enables for maximum control flexibility. The
’FCT827T devices are designed for
high-capacitance-load drive capability, while
providing low-capacitance bus loading at both
inputs and outputs. All outputs are designed for
low-capacitance bus loading in the
high-impedance state.
This device is fully specified for partial-power-down applications using I
off
. The I
off
circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
Copyright  2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OE
1
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
GND
V
CC
Y
0
Y
1
Y
2
Y
3
Y
4
Y
5
Y
6
Y
7
Y
8
Y
9
OE
2
CY74FCT827T ...L PACKAGE
(TOP VIEW)
3212827
12 13
5
6
7
8
9
10
11
25
24
23
22
21
20
19
Y
2
Y
3
Y
4
NC
Y
5
Y
6
Y
7
D
2
D
3
D
4
NC
D
5
D
6
D
7
426
14 15 16 17 18
GND
NC
Y
D D OE NC
V
CC
NC – No internal connection
8
Y
9
OE
2
D
9
D
8
CY74FCT827T ...Q OR SO PACKAGE
(TOP VIEW)
Y
0
Y
1
0 1
1
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.