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SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCLS131D - DECEMBER 1982 - REVISED AUGUST 2003
D D D
Wide Operating Voltage Range of 2 V to 6 V High-Current 3-State Outputs Drive Bus Lines Directly or Up To 15 LSTTL Loads Low Power Consumption, 80-A Max ICC
SN54HC245 . . . J OR W PACKAGE SN74HC245 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW)
D D D
Typical tpd = 12 ns 6-mA Output Drive at 5 V Low Input Current of 1 A Max
SN54HC245 . . . FK PACKAGE (TOP VIEW)
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC OE B1 B2 B3 B4 B5 B6 B7 B8
A2 A1 DIR VCC OE A3 A4 A5 A6 A7
4 5 6 7 8 3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
B1 B2 B3 B4 B5
description/ordering information
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated. ORDERING INFORMATION
TA PDIP - N SOIC - DW -40C 85C -40 C to 85 C SOP - NS SSOP - DB TSSOP - PW CDIP - J -55C 125C -55 C to 125 C CFP - W LCCC - FK PACKAGE Tube of 20 Tube of 25 Reel of 2000 Reel of 2000 Reel of 2000 Tube of 70 Reel of 2000 Reel of 250 Tube of 20 Tube of 85 Tube of 55 ORDERABLE PART NUMBER SN74HC245N SN74HC245DW SN74HC245DWR SN74HC245NSR SN74HC245DBR SN74HC245PW SN74HC245PWR SN74HC245PWT SNJ54HC245J SNJ54HC245W SNJ54HC245FK SNJ54HC245J SNJ54HC245W HC245 TOP-SIDE MARKING SN74HC245N HC245 HC245 HC245
SNJ54HC245FK 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 2003, Texas Instruments Incorporated
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.
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.
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A8 GND B8 B7 B6
1
SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCLS131D - DECEMBER 1982 - REVISED AUGUST 2003
FUNCTION TABLE INPUTS OE L L H DIR L H X OPERATION B data to A bus A data to B bus Isolation
logic diagram (positive logic)
DIR 1 19
OE
A1
2
18
B1
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 mA Package thermal impedance, JA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C
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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7.
2
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SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCLS131D - DECEMBER 1982 - REVISED AUGUST 2003
recommended operating conditions (see Note 3)
SN54HC245 MIN VCC VIH Supply voltage High-level input voltage VCC = 2 V VCC = 4.5 V VCC = 6 V VCC = 2 V VIL VI VO t/v t/ v Low-level input voltage Input voltage Output voltage Input transition rise/fall time VCC = 2 V VCC = 4.5 V VCC = 4.5 V VCC = 6 V 0 0 2 1.5 3.15 4.2 0.5 1.35 1.8 VCC VCC 1000 500 0 0 NOM 5 MAX 6 SN74HC245 MIN 2 1.5 3.15 4.2 0.5 1.35 1.8 VCC VCC 1000 500 ns V V V V NOM 5 MAX 6 UNIT V
VCC = 6 V 400 400 TA Operating free-air temperature -55 125 -40 85 C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC 2V IOH = -20 A A VOH VI = VIH or VIL IOH = -6 mA IOH = -7.8 mA IOL = 20 A A VOL VI = VIH or VIL IOL = 6 mA IOL = 7.8 mA II IOZ ICC Ci DIR or OE A or B DIR or OE VI = VCC or 0 VO = VCC or 0 VI = VCC or 0, IO = 0 4.5 V 6V 4.5 V 6V 2V 4.5 V 6V 4.5 V 6V 6V 6V 6V 2 V to 6 V 3 MIN 1.9 4.4 5.9 3.98 5.48 TA = 25C TYP MAX 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 0.1 0.01 0.1 0.1 0.1 0.26 0.26 100 0.5 8 10 SN54HC245 MIN 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.4 0.4 1000 10 160 10 MAX SN74HC245 MIN 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33 1000 5 80 10 nA A A pF V V MAX UNIT
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SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCLS131D - DECEMBER 1982 - REVISED AUGUST 2003
switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER FROM (INPUT) TO (OUTPUT) VCC 2V tpd A or B B or A 4.5 V 6V 2V ten OE A or B 4.5 V 6V 2V tdis OE A or B 4.5 V 6V 2V tt A or B 4.5 V 6V MIN TA = 25C TYP MAX 40 15 12 125 23 20 74 25 21 20 8 6 105 21 18 230 46 39 200 40 34 60 12 10 SN54HC245 MIN MAX 160 32 27 340 68 58 300 60 51 90 18 15 SN74HC245 MIN MAX 130 26 22 290 58 49 250 50 43 75 15 13 ns ns ns ns UNIT
switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1)
PARAMETER FROM (INPUT) TO (OUTPUT) VCC 2V tpd A or B B or A 4.5 V 6V 2V ten OE A or B 4.5 V 6V 2V tt A or B 4.5 V 6V TA = 25C MIN TYP MAX 54 18 15 150 31 25 45 17 13 135 27 23 270 54 46 210 42 36 SN54HC245 MIN MAX 200 40 34 405 81 69 315 63 53 SN74HC245 MIN MAX 170 34 29 335 67 56 265 53 45 ns ns ns UNIT
operating characteristics, TA = 25C
PARAMETER Cpd Power dissipation capacitance per transceiver TEST CONDITIONS No load TYP 40 UNIT pF
4
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SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCLS131D - DECEMBER 1982 - REVISED AUGUST 2003
PARAMETER MEASUREMENT INFORMATION
VCC PARAMETER Test Point S1 RL ten tPZH tPZL tPHZ tPLZ 1 k RL 1 k CL 50 pF or 150 pF 50 pF 50 pF or 150 pF S1 Open Closed Open Closed -- Open S2 Closed Open Closed Open Open
From Output Under Test CL (see Note A)
S2
tdis
tpd or tt LOAD CIRCUIT VCC Input 50% tPLH In-Phase Output 50% 10% tPHL Out-of-Phase Output 90% 50% 10% tf 90% tr tPLH 50% 10% 90% tr VOH VOL 50% 0V tPHL 90% VOH 50% 10% V OL tf
Output Control (Low-Level Enabling) tPZL Output Waveform 1 (See Note B) tPZH
VCC 50% 50% 0V tPLZ VCC 50% 10% tPHZ 50% 90% VOH 0 V VCC VOL
VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES VCC 50% 10% 0 V tf
Input
50% 10%
90%
90%
Output Waveform 2 (See Note B)
tr VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS
NOTES: A. CL includes probe and test-fixture 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. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO = 50 , tr = 6 ns, tf = 6 ns. D. The outputs are measured one at a time with one input transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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5
MECHANICAL DATA
MCFP006B - JANUARY 1995 - REVISED JULY 2003
W (R-GDFP-F20)
0.300 (7,62) 0.245 (6,22)
CERAMIC DUAL FLATPACK
Base and Seating Plane
0.045 (1,14) 0.026 (0,66)
0.100 (2,54) 0.045 (1,14) 0.320 (8,13) MAX 1 20
0.009 (0,23) 0.004 (0,10)
0.022 (0,56) 0.015 (0,38)
0.050 (1,27) 0.540 (13,72) MAX
0.005 (0,13) MIN 4 Places
10 0.370 (9,40) 0.250 (6,35)
11 0.370 (9,40) 0.250 (6,35) 4040180-4 /D 07/03
NOTES: A. B. C. D. E.
All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a ceramic lid using glass frit. Index point is provided on cap for terminal identification only. Falls within Mil-Std 1835 GDFP2-F20
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1
MECHANICAL DATA
MLCC006B - OCTOBER 1996
FK (S-CQCC-N**)
28 TERMINAL SHOWN
LEADLESS CERAMIC CHIP CARRIER
18
17
16
15
14
13
12
NO. OF TERMINALS ** 11 10 28 9 8 7 6 68 5 84 44 52 20
A MIN 0.342 (8,69) 0.442 (11,23) 0.640 (16,26) 0.739 (18,78) 0.938 (23,83) 1.141 (28,99) MAX 0.358 (9,09) 0.458 (11,63) 0.660 (16,76) 0.761 (19,32) 0.962 (24,43) 1.165 (29,59) MIN 0.307 (7,80) 0.406 (10,31) 0.495 (12,58) 0.495 (12,58) 0.850 (21,6) 1.047 (26,6)
B MAX 0.358 (9,09) 0.458 (11,63) 0.560 (14,22) 0.560 (14,22) 0.858 (21,8) 1.063 (27,0)
19 20 21 B SQ 22 A SQ 23 24 25
26
27
28
1
2
3
4 0.080 (2,03) 0.064 (1,63) 0.020 (0,51) 0.010 (0,25)
0.020 (0,51) 0.010 (0,25)
0.055 (1,40) 0.045 (1,14)
0.045 (1,14) 0.035 (0,89)
0.028 (0,71) 0.022 (0,54) 0.050 (1,27)
0.045 (1,14) 0.035 (0,89)
4040140 / D 10/96 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a metal lid. The terminals are gold plated. Falls within JEDEC MS-004
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1
MECHANICAL
MPDI002C - JANUARY 1995 - REVISED DECEMBER 20002
N (R-PDIP-T**)
16 PINS SHOWN
PLASTIC DUAL-IN-LINE PACKAGE
PINS ** DIM A 16 9 A MAX
14 0.775 (19,69) 0.745 (18,92)
16 0.775 (19,69) 0.745 (18,92)
18 0.920 (23,37) 0.850 (21,59)
20 1.060 (26,92) 0.940 (23,88)
A MIN
0.260 (6,60) 0.240 (6,10)
C
MS-100 VARIATION
AA
BB
AC
AD
1 0.070 (1,78) 0.045 (1,14) D
8
0.045 (1,14) 0.030 (0,76) D
0.020 (0,51) MIN
0.325 (8,26) 0.300 (7,62) 0.015 (0,38) 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.010 (0,25) NOM Gauge Plane
0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.010 (0,25) M
0.430 (10,92) MAX
14/18 PIN ONLY 20 pin vendor option
D 4040049/E 12/2002
NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001, except 18 and 20 pin minimum body lrngth (Dim A). D. The 20 pin end lead shoulder width is a vendor option, either half or full width.
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1
MECHANICAL DATA
MSOI003E - JANUARY 1995 - REVISED SEPTEMBER 2001
DW (R-PDSO-G**)
16 PINS SHOWN 0.020 (0,51) 0.014 (0,35) 9
PLASTIC SMALL-OUTLINE PACKAGE
0.050 (1,27) 16
0.010 (0,25)
0.419 (10,65) 0.400 (10,15) 0.299 (7,59) 0.291 (7,39) 0.010 (0,25) NOM
Gage Plane 0.010 (0,25) 1 A 8 0- 8 0.050 (1,27) 0.016 (0,40)
Seating Plane 0.104 (2,65) MAX 0.012 (0,30) 0.004 (0,10) PINS ** DIM A MAX 0.004 (0,10)
16 0.410 (10,41) 0.400 (10,16)
18 0.462 (11,73) 0.453 (11,51)
20 0.510 (12,95) 0.500 (12,70)
24 0.610 (15,49) 0.600 (15,24)
28 0.710 (18,03) 0.700 (17,78) 4040000/E 08/01
A MIN
NOTES: A. B. C. D.
All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15). Falls within JEDEC MS-013
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1
MECHANICAL DATA
MSSO002E - JANUARY 1995 - REVISED DECEMBER 2001
DB (R-PDSO-G**)
28 PINS SHOWN 0,65 28 0,38 0,22 15 0,15 M
PLASTIC SMALL-OUTLINE
0,25 0,09 5,60 5,00 8,20 7,40
Gage Plane 1 A 14 0- 8 0,25 0,95 0,55
Seating Plane 2,00 MAX 0,05 MIN 0,10
PINS ** DIM A MAX
14
16
20
24
28
30
38
6,50
6,50
7,50
8,50
10,50
10,50
12,90
A MIN
5,90
5,90
6,90
7,90
9,90
9,90
12,30 4040065 /E 12/01
NOTES: A. B. C. D.
All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150
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1
MECHANICAL DATA
MTSS001C - JANUARY 1995 - REVISED FEBRUARY 1999
PW (R-PDSO-G**)
14 PINS SHOWN
PLASTIC SMALL-OUTLINE PACKAGE
0,65 14 8
0,30 0,19
0,10 M
0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 A 7 0- 8 0,75 0,50
Seating Plane 1,20 MAX 0,15 0,05 0,10
PINS ** DIM A MAX
8
14
16
20
24
28
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153
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1
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