CY74FCT2240T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS036A – SEPTEMBER 1994 – REVISED OCTOBER 2001
D
D
D
D
D
D
D
D
D
Q OR SO PACKAGE
(TOP VIEW)
Function and Pinout Compatible With FCT
and F Logic
25-Ω Output Series Resistors Reduce
Transmission-Line Reflection Noise
TTL-Output-Level Version of Equivalent
FCT Functions
Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
Ioff 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)
Fully Compatible With TTL Input and
Output Logic Levels
12-mA Output Sink Current
15-mA Output Source Current
3-State Outputs
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
OEB
OA0
DB0
OA1
DB1
OA2
DB2
OA3
DB3
description
The CY74FCT2240T is an octal buffer and line driver that includes on-chip 25-Ω terminating resistors at each
of the outputs to minimize noise resulting from reflections or standing waves in high-performance applications.
The on-chip resistors reduce overall board space and component count. Designed to be employed as a memory
address driver, clock driver, and bus-oriented transmitter/receiver, this device provides speed and drive
capabilities commensurate with its fastest bipolar logic counterparts, while reducing power dissipation. The
input and output voltage levels allow direct interface with TTL, NMOS, and CMOS devices, without the need
for external components.
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.
ORDERING INFORMATION
TA
PACKAGE†
QSOP – Q
SOIC – SO
–40°C
40°C to 85°C
QSOP – Q
SOIC – SO
SPEED
(ns)
ORDERABLE
PART NUMBER
Tape and reel
4.1
CY74FCT2240CTQCT
Tube
4.1
CY74FCT2240CTSOC
Tape and reel
4.1
CY74FCT2240CTSOCT
Tape and reel
4.8
CY74FCT2240ATQCT
Tube
8
CY74FCT2240TSOC
Tape and reel
8
CY74FCT2240TSOCT
TOP-SIDE
MARKING
FCT2240C
FCT2240C
FCT2240A
FCT2240
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
CY74FCT2240T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS036A – SEPTEMBER 1994 – REVISED OCTOBER 2001
FUNCTION TABLE
INPUTS
D
OUTPUT
O
L
L
H
L
H
L
H
X
Z
OEA
OEB
L
L
H
H = High logic level, L = Low logic level,
X = Don’t care, Z = High-impedance (off)
state
logic diagram
OEA
1
19
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
2
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
11
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
OEB
OA0
DB0
OA1
DB1
OA2
DB2
OA3
DB3
CY74FCT2240T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS036A – SEPTEMBER 1994 – REVISED OCTOBER 2001
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range to ground potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
DC input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
DC output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
DC output current (maximum sink current/pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 mA
Package thermal impedance, θJA (see Note 1): Q package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68°C/W
SO package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
Ambient temperature range with power applied, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +135°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 2)
MIN
NOM
MAX
UNIT
4.75
5
5.25
V
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
0.8
V
High-level output current
–15
mA
IOL
TA
Low-level output current
12
mA
85
°C
High-level input voltage
2
Operating free-air temperature
–40
V
NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
CY74FCT2240T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS036A – SEPTEMBER 1994 – REVISED OCTOBER 2001
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VIK
VOH
VCC = 4.75 V,
VCC = 4.75 V,
IIN = –18 mA
IOH = –15 mA
VOL
ROUT
VCC = 4.75 V,
VCC = 4.75 V,
IOL = 12 mA
IOL = 12 mA
Vhys
II
All inputs
IIH
IIL
IOZH
IOZL
IOS‡
Ioff
ICC
∆ICC
ICCD¶
IC#
MIN
2.4
20
TYP†
MAX
UNIT
–0.7
–1.2
V
3.3
V
0.3
0.55
V
25
40
Ω
5
µA
±1
µA
±1
µA
10
µA
0.2
VCC = 5.25 V,
VCC = 5.25 V,
VIN = VCC
VIN = 2.7 V
VCC = 5.25 V,
VCC = 5.25 V,
VIN = 0.5 V
VOUT = 2.7 V
VCC = 5.25 V,
VCC = 5.25 V,
VOUT = 0.5 V
VOUT = 0 V
–60
VCC = 0 V,
VCC = 5.25 V,
–120
V
–10
µA
–225
mA
±1
µA
VOUT = 4.5 V
VIN ≤ 0.2 V,
VIN ≥ VCC – 0.2 V
VCC = 5.25 V, VIN = 3.4 V§, f1 = 0, Outputs open
0.1
0.2
mA
0.5
2
mA
VCC = 5.25 V, One input switching at 50% duty cycle, Outputs open,
OEA = OEB = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V
0.06
0.12
mA/
MHz
0.7
1.4
1
2.4
1.3
2.6||
3.3
10.6||
5
10
VCC = 5.25 V,
Outputs open,
open
OEA = OEB = GND
One bit switching
at f1 = 10 MHz
at 50% duty cycle
Eight bits switching
at f1 = 2.5 MHz
at 50% duty cycle
VIN ≤ 0.2 V or
VIN ≥ VCC – 0.2 V
VIN = 3.4 V or GND
VIN ≤ 0.2 V or
VIN ≥ VCC – 0.2 V
VIN = 3.4 V or GND
Ci
mA
pF
Co
9
12
pF
† Typical values are at VCC = 5 V, TA = 25°C.
‡ Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus
and/or sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise,
prolonged shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In
any sequence of parameter tests, IOS tests should be performed last.
§ Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND
¶ This parameter is derived for use in total power-supply calculations.
# IC
= ICC + ∆ICC × DH × NT + ICCD (f0/2 + f1 × N1)
Where:
IC
= Total supply current
ICC = Power-supply current with CMOS input levels
∆ICC = Power-supply current for a TTL high input (VIN = 3.4 V)
DH
= Duty cycle for TTL inputs high
NT
= Number of TTL inputs at DH
ICCD = Dynamic current caused by an input transition pair (HLH or LHL)
f0
= Clock frequency for registered devices, otherwise zero
f1
= Input signal frequency
N1
= Number of inputs changing at f1
All currents are in milliamperes and all frequencies are in megahertz.
|| Values for these conditions are examples of the ICC formula.
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
CY74FCT2240T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS036A – SEPTEMBER 1994 – REVISED OCTOBER 2001
switching characteristics over operating free-air temperature range (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
D
O
tPZH
tPZL
OE
O
tPHZ
tPLZ
OE
O
POST OFFICE BOX 655303
CY74FCT2240T
CY74FCT2240AT
CY74FCT2240CT
MIN
MAX
MIN
MAX
MIN
MAX
1.5
8
1.5
4.8
1.5
4.1
1.5
8
1.5
4.8
1.5
4.1
1.5
10
1.5
6.5
1.5
5.8
1.5
10
1.5
6.5
1.5
5.8
1.5
9.5
1.5
5.9
1.5
5.2
1.5
9.5
1.5
5.9
1.5
5.2
• DALLAS, TEXAS 75265
UNIT
ns
ns
ns
5
CY74FCT2240T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS036A – SEPTEMBER 1994 – REVISED OCTOBER 2001
PARAMETER MEASUREMENT INFORMATION
7V
From Output
Under Test
From Output
Under Test
Test
Point
CL = 50 pF
(see Note A)
Open
TEST
GND
CL = 50 pF
(see Note A)
500 Ω
S1
500 Ω
S1
Open
7V
Open
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
500 Ω
LOAD CIRCUIT FOR
3-STATE OUTPUTS
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
3V
1.5 V
Timing Input
0V
tw
tsu
3V
1.5 V
Input
1.5 V
th
3V
1.5 V
Data Input
1.5 V
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
1.5 V
Input
1.5 V
0V
tPLH
tPHL
1.5 V
1.5 V
VOL
tPHL
Out-of-Phase
Output
tPLZ
≈3.5 V
1.5 V
tPZH
VOH
1.5 V
VOL
1.5 V
0V
Output
Waveform 1
(see Note B)
tPLH
1.5 V
1.5 V
tPZL
VOH
In-Phase
Output
3V
Output
Control
Output
Waveform 2
(see Note B)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOL + 0.3 V
VOL
tPHZ
1.5 V
VOH – 0.3 V
VOH
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
CY74FCT2240CTQCT
ACTIVE
SSOP
DBQ
20
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
FCT2240C
CY74FCT2240CTQCTE4
ACTIVE
SSOP
DBQ
20
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
FCT2240C
CY74FCT2244ATQCT
ACTIVE
SSOP
DBQ
20
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
FCT2244A
CY74FCT2244ATSOC
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
FCT2244A
CY74FCT2244CTQCT
ACTIVE
SSOP
DBQ
20
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
FCT2244C
CY74FCT2244CTSOC
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
FCT2244C
CY74FCT2244TQCT
ACTIVE
SSOP
DBQ
20
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
FCT2244
CY74FCT2244TSOC
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
FCT2244
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of