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Details, datasheet, quote on part number:74F2241
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Datasheet text preview:
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 = 0°C to +70°C 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 20µA/0.2mA 20µA/0.2mA 20µA/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: 20µA 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 Highlevel input voltage Lowlevel input voltage Input clamp current Highlevel output current Lowlevel 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 µA µA mA µA µA 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 Highlevel input current Lowlevel input current Offstate output current, highlevel voltage applied Offstate output current, lowlevel voltage applied Shortcircuit 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 = 25°C. 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 = +25°C 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 = 0°C to +70°C 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
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