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INTEGRATED CIRCUITS
74F2240 Octal inverter buffer with 30 equivalent output termination (3-State) 74F2241 Octal buffer with 30 equivalent output termination (3-State)
Product specification IC15 Data Handbook 1990 Dec 13
Philips Semiconductors
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
FEATURES
* Octal bus interface * 30 output termination ideal for driving DRAM * 15mA source current
DESCRIPTION
The 74F2240 and 74F2241 are octal buffers that are ideal for driving dynamic DRAM with impedance matching. The outputs are all capable of sinking 5mA and sourcing up to 15mA. The device features two output enables, each controlling four of the 3-state outputs. TYPICAL PROPAGATION DELAY 4.3ns 4.5ns TYPICAL SUPPLY CURRENT (TOTAL) 37mA 30mA
PIN CONFIGURATION
74F2240 OEa 1 Ia0 2 Yb0 3 Ia1 4 Yb1 5 Ia2 6 Yb2 7 Ia3 8 Yb3 9 GND 10 20 VCC 19 OEb 18 Ya0 17 Ib0 16 Ya1 15 Ib1 14 Ya2 13 Ib2 12 Ya3 11 Ib3
SF00561
TYPE 74F2240 74F2241
LOGIC SYMBOL
74F2240 2 4 6 8 17 15 13 11
ORDERING INFORMATION
ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F2240N, N74F2241N N74F2240D, N74F2241D PKG DWG #
1 19
Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 OEa OEb Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3
20-pin plastic DIP 20-pin plastic SOL
SOT146-1 SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS Ian, Ibn OEa, OEb OEb Yan, Ybn DESCRIPTION Data inputs Output enable inputs (active Low) Output enable input (74F2241) Data outputs (74F2241) 74F (U.L.) HIGH/LOW 1.0/0.33 1.0/0.33 1.0/0.33 750/8.33 LOAD VALUE HIGH/LOW 20A/0.2mA 20A/0.2mA 20A/0.2mA 15mA/5mA
18 16 14 12 VCC = Pin 20 GND = Pin 10
3
5
7
9
SF00562
IEC/IEEE SYMBOL
74F2240 1 19 EN1 EN2 2 4 6 8 17 15 13 11 2 18 16 14 12 3 5 7 9
2D
1
Yan, Ybn Data outputs (74F2240) 750/8.33 15mA/5mA NOTE: One (1.0) FAST unit load is defined as: 20A in the High state and 0.6mA in the Low state.
SF00563
December 13, 1990
2
853-1524 01255
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
PIN CONFIGURATION
74F2241 OEa 1 Ia0 2 Yb0 3 Ia1 4 Yb1 5 Ia2 6 Yb2 7 Ia3 8 Yb3 9 GND 10 20 VCC 19 OEb
LOGIC DIAGRAM FOR 74F2240
Ia0 2 18 Ya0 Ib0 17 2 Yb0
Ia1 18 Ya0 17 Ib0 16 Ya1 15 Ib1 14 Ya2 13 Ib2 12 Ya3 11 Ib3 OEa Ia3 Ia2
4
15
Ya1
Ib1
15
5
Yb1
6
14 Ya2 12 Ya3
Ib2
13
7 Yb2 9 Yb3
8
Ib3
11
1
OEb
10
VCC = Pin 20 GND = Pin 10
SF00567
SF00564
LOGIC DIAGRAM FOR 74F2241 LOGIC SYMBOL
74F2241 2 4 6 8 17 15 13 11 Ia1 Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 1 19 OEa OEb Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 OEa Ia0 2 18 Ya0 Ib0 17 2 Yb0
4
15
Ya1
Ib1
15
5
Yb1
Ia2
6
14 Ya2 12 Ya3
Ib2
13
7 Yb2 9 Yb3
Ia3
8
Ib
11
1
OEb
10
18 16 14 12 VCC = Pin 20 GND = Pin 10
3
5
7
9
VCC = Pin 20 GND = Pin 10
SF00568
SF00565
FUNCTION TABLE FOR 74F2240 IEC/IEEE SYMBOL
74F2241 1 19 EN1 EN2
INPUTS OEa L L H
18 16 14 12 2 3 5 7 9
OUTPUTS Ib L H X Ya H L Z Yb H L Z
Ia L H X
OEb L L H
2 4 6 8 17 15 13 11
2D
1
Notes to function table for 74F2240 H = High voltage level L = Low voltage level X = Don't care Z = High impedance "off" state
FUNCTION TABLE FOR 74F2241
INPUTS
SF00566
OUTPUTS Ib L H X Ya L H Z Yb L H Z
OEa L L H
Ia L H X
OEb H H L
Notes to function table for 74F2241 H = High voltage level L = Low voltage level X = Don't care Z = High impedance "off" state December 13, 1990 3
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) SYMBOL VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in high output state Current applied to output in low output state Operating free air temperature range Storage temperature range PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to VCC 10 0 to +70 -65 to +150 UNIT V V mA V mA
C C
RECOMMENDED OPERATING CONDITIONS
SYMBOL PARAMETER MIN VCC VIH VIL IIk IOH IOL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free air temperature range 0 4.5 2.0 0.8 -18 -15 5 +70 LIMITS NOM 5.0 MAX 5.5 V V V mA mA mA UNIT
C
December 13, 1990
4
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER VCC = MIN, VOH High-level output voltage VIL = MAX, VIH = MIN IOH = -15mA IOL = MAX TEST CONDITIONS1 IOH = -3mA 10%VC 5%VCC 10%VC 5%VCC 10%VC
C C C
LIMITS MIN 2.4 2.7 2.0 2.0 0.50 0.42 -0.73 0.50 -1.2 100 20 -0.2 50 -50 -60 25 53 35 19 -150 35 75 45 30 65 40 3.4 TYP2 MAX
UNIT V V V V V V V A A mA A A mA mA mA mA mA mA
VOL
Low-level output voltage
VCC = MIN, VIL = MAX, VIH = MIN, VCC = MIN, II = IIK
5%VCC
VIK II IIH IIL IOZH IOZL IOS
Input clamp voltage Input current at maximum input voltage High-level input current Low-level input current Off-state output current, high-level voltage applied Off-state output current, low-level voltage applied Short-circuit output current3 ICCH 74F2240 ICCL ICCZ ICCH 74F2241 ICCL ICCZ
VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX, VO = 2.7V VCC = MAX, VO = 0.5V VCC = MAX VCC = MAX
ICC
Supply current (total)
VCC = MAX
45 27
mA NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25C. 3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, IOS tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
LIMITS Tamb = +25C SYMBOL PARAMETER TEST CONDITION tPLH tPHL tPZH tPZL tPHZ tPLZ tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay Ian, Ibn to Yn Output enable time to high or low level Output disable time from high or low level Propagation delay Ian, Ibn to Yn Output enable time to high or low level Output disable time from high or low level 74F2241 74F2240 MIN Waveform 1 Waveform 3 Waveform 4 Waveform 3 Waveform 4 Waveform 2 Waveform 3 Waveform 4 Waveform 3 Waveform 4 3.0 2.0 3.0 3.5 2.0 1.0 3.0 2.5 3.0 3.5 2.0 1.5 VCC = +5.0V CL = 50pF, RL = 500 TYP 5.0 3.5 4.5 5.0 3.5 2.5 4.5 4.5 5.0 5.5 4.0 3.5 MAX 7.0 5.5 7.0 8.0 6.5 5.5 7.0 6.5 7.0 7.5 6.0 6.0 Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN MAX 2.5 2.0 2.5 3.0 1.5 1.0 2.5 2.5 2.0 3.0 1.5 1.0 8.0 6.0 8.0 9.0 7.0 5.5 8.0 7.5 8.0 8.5 7.0 6.5 ns ns ns ns ns ns UNIT
December 13, 1990
5
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
AC WAVEFORMS
Ian, Ibn VM tPHL VM tPLH Yn Ian, Ibn VM tPLH VM tPHL
Yn
VM
VM
VM
VM
SF00328
SF00329
Waveform 1. Propagation delay for inverting outputs
OEn VM OEb tPZH Yn, Yn VM 0V tPHZ VOH -0.3V VM
Waveform 2. Propagation delay for non-inverting outputs
OEn VM OEb tPZL Yn, Yn VM VOL +0.3V tPLZ 3.5V VM
SF00330
SF00331
Waveform 3. 3-state output enable time to high level and output disable time from high level
Waveform 4. 3-state output enable time to low level and output disable time from low level
NOTES: For all waveforms, VM = 1.5V. The shaded areas indicate when the input is permitted to change for predictable output performance.
TEST CIRCUIT AND WAVEFORMS
VCC 7.0V VIN PULSE GENERATOR RT D.U.T. VOUT RL NEGATIVE PULSE 90% VM 10% tTHL (tf ) CL RL tTLH (tr ) 90% POSITIVE PULSE 10% tTHL (tf ) AMP (V) 90% VM tw 10% 0V tw VM 10% tTLH (tr ) 0V AMP (V)
90%
Test Circuit for Open Collector Outputs SWITCH POSITION TEST tPLZ tPZL All other SWITCH closed closed open
VM
Input Pulse Definition
DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
INPUT PULSE REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate 1MHz tw 500ns tTLH 2.5ns tTHL 2.5ns
SF00128
December 13, 1990
6
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
1990 Dec 13
7
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1990 Dec 13
8
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
NOTES
1990 Dec 13
9
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
Data sheet status
Data sheet status Objective specification Preliminary specification Product specification Product status Development Qualification Definition [1] This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
Production
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. print code Document order number: Date of release: 10-98 9397-750-05197
Philips Semiconductors
yyyy mmm dd 10

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