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DP7304BJ-DP8304BJ-DP8304BN
8 BIT TRI-STATE BIDIRECTIONAL TRANSCEIVER
DP7304B/DP8304B
NNational Semiconductor
DP7304B/DP8304B 8-Bit TRI-STATE®
Bidirectional Transceiver (Non-lnverting)
General Description
The DP7304BB/DP8304B are high speed Schottky e-bit
TRI-STATE bidirectional transceivers designed to provide
bidirectional drive for bus oriented microprocessor and digi-
tal communications systems. They are all capable of sinking
16 mA on the A ports and 48 mA on the B ports (bus ports).
PNP inputs for low input current and an increased output
high (VOH) level allow compatibility with MOS, CMOS, and
other technologies that have a higher threshold and less
drive capabilities. In addition, they all feature glitch-free
power up/down on the B port preventing erroneous glitches
on the system bus in power up or down.
DPL304B/DP8304B are featured with Transmit/Receive
(T / R) and Chip Disable (CD) inputs to simplify control logic.
Features
a 8-bit bidirectional data flow reduces system package
I: Bidirectional TRI-STATE inputs/outputs interface with
bus oriented systems
I: PNP inputs reduce input loading
" Output high voltage interfaces with TTL, MOS, and
u 48 mA/300 pF bus drive capability
I: Pinouts simplify system interconnections
u Transmit/Receive and chip disable simplify control logic
a Compact 20-pin dual-in-line package
a Bus port glitch free power up/down
Logic and Connection Diagrams
Dual-in-Line Package
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TL/F/8793-1 Top View
Order Number DP7304BJ, DP8304BJ,
DP8304BN or DP8304BWM
See NS Package Number J20A, N20A or M203
Logic Table
Inputs Resulting Conditions
Chip Disable TransmIt/Recelve A Port B Port
0 0 OUT IN
0 IN OUT
1 X TRI-STATE TRI-STATE
X = Don't Care
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Absolute Maximum Ratings (Note1) Recommended Operating
If MIIItary/Aerospace specified devices are required, Conditions
please contact the National Semiconductor Sales Mln Max Units
OfflcelDlstrlbutors for availability and specifications. Supply Voltage (Vcc)
Supply Voltage 7V DP7304B 4.5 5.5 v
Input Voltage 5.5V DP8304B 4.75 5.25 v
Output Voltage 5.5V Temperature (T A)
Storage Temperature -65''G to + 15ty'C DP7304B -55 125 'C
Maximum Power Dissipation' at 25''C DP8304B 0 70 "C
Cavity Package 1667 mW
Molded Package 1832 mW
Lead Temperature (soldering, 4 sec.) 260°C
‘Derate cavity package 11.1 mWPC above 25'0; deraie molded package
14.7 mWPC above 25°C.
DC Electrical Characteristics (Notes 2 and 3)
Symbol Parameter Conditions Mln Typ Max Units
A PORT (A0-A7)
VIH Logical "1" InputVoltage CD = VIL, T/A' = 2.0V 2.0 V
W. Logical "o" InputVoltage CD = vcr/A" = 2.0V DP8304B 0.8 V
DP7304B 0.7 V
VOH Logical "1"OutputVoltage CD = VIL. T/A = VIL IOH = -0.4 mA VCC-1.15 Vcc-O.? V
IOH = -3 mA 2.7 3.95 V
VOL Logical“0"Ou1putVoltage CD = T/A" = VI. kn. = 16 mA (8304B) 0.35 0.5 V
IOL = 8 mA (both) 0.3 0.4 V
los Output Short Circuit CD -- vo T/A = VIL. V0 = 0V, _ - -
Current VCC = Max (Note 4) 10 M 75 mA
IIH Logical "1" InputCurrent CD = VIL. T/A = 2.0V,V1H = 2.7V 0.1 80 pA
h Input Current at Maximum CD = 2.0V, VCC = Max, " = 5.25V
Input Voltage
lit. Logical "o" InputCurrent CD = 1hL,T/A = 2.0V, VIN = 0.4V -70 -200 “A
VCLAMP Input Clamp Voltage CD = 2.0V, IN = -12 mA -0.7 -1.5 V
Kao Output/lnput CD = 2.0V " = 0.4V -200 pt/k
TRI-STATE Current VIN = 4.0V 80 H A
B PORT (30-37)
" Logitoal"1"lnputVoltage CD = V.._, T/rt" = VIL 2.0 V
" Logical "0" Input Voltage CD = Vit., T/IT = VI. DP8304B 0.8 v
DP7304B 0.7 V
VOH Logical "1" Output Voltage GD = vo T/A = 2.0V IOH = -0.4 mA Vcc-1.15 Vcc-0.8 V
'OH = -5 mA 2.7 3.9 V
[OH = -10 mA 2.4 3.6 V
VOL Logical "0" OutputVoltage CD = Ito T/A = 2.0V IOL = 20 mA 0.3 0.4 V
10L = 48 mA 0.4 0.5 V
los Output Short Circuit CD = VIL- T/A = 2.OV, Vo = 0V, - - -
Current Vcc = Max (Note 4) 25 50 150 mA
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DC Electrical Characteristics (Notes 2 and 3) (Continued)
Symbol Parameter Conditions Min Typ Max Units
B PORT (80-87) (Continued)
IIH Logical "1" Input Current CD = W., T/R = VIL- VIH = 2.7V 0.1 80 pA
I, Input Current at Maximum CD = 2.0V, Vcc = Max, Vm = 5.25V 1 m A
Input Voltage
“L Logical "0" Input Current CD -- Ihu, T/A = Ihu, l/m = 0.4V -70 -20tj “A
VCLAMp Input Clamp Voltage CD = 2.0V, Im = -12 mA -0.7 -1.5 V
IOD Output/Input CD = 2.0V VIN == 0.4V -200 p.A
CONTROL INPUTS CD, T/rt'
VIH Logical "1 " Input Voltage 2.0 V
VIL Logical "o" Input Voltage DP8304B 0.8 V 8
DP7304B 0.7 V
IIH Logical"1"lnputCurmnt VIH .--. 2.7V 0.5 20 ptA
I. Maximum Input Current Vcc = Max, VIH = 5.25V 1.0 mA
lIL Logical "O'' InputCurrent " = 0.4V T/A -0.1 ' -0.25 mA
GD -0.25 -0.5 mA
VCLAMP Input Clamp Voltage “N = - 12 mA -0.8 - 1.5 V
POWER SUPPLY CURRENT
lcc PowerSupply Current CD == 2.0V. VIN = 0.4V. Vcc --- Max 70 100 mA
CD = V.NA = 0.4V, T/A = 2V, VCC = Max 90 140 mA
AC Electrical Characteristics Vcc = 5V,TA = 25''C
Symbol Parameter Condltlons Mln Typ Max Unlts
A PORT DATA/MODE SPECIFICATIONS
tpDHLA Propagation Delay to a Logical "O" from CD = 0.4V, T/pl = 0.4V (FigureA) 14 18 ns
BPorttoAPort H1=1k.R2= 5k.C1=30pF
tpDLHA Propagation Delay to a Logical "1" from CD = 0.4V, T/A" = 0.4V (FigureA) 13 18 ns
BPorttoAPort R1---tk,R2--5k,tM=30pF
tpLZA Propagation Deiay from a Logical "0" to BO to B7 = 0.4V, T/A = 0.4V (Figure C) 1 1 15 ns
TRI-STATE from CDtoA Port S3 = 1, R5 = 1k, C4 = 15 pF
tpHZA Propagation Delay from a Logical "I " to BO to B7 = 2.4V, T/tA = 0.4V (Figure C) 8 15 ns
TFII-STATE from CD10 A Port S3 = 0, R5 = 1k, CR = 15 pF
tPZLA Propagation Delay from TRI-STATE to BO to B7 = 0.4V, T/A" = 0.4V (Figure C) ar' 35 ns
a Logical "0" from CD to A Port S3 = 1, R5 = 1k, C4 = 30 pF
thHA Propagation Delay from TRl-STATE to BO to B? ' 2.4V, T/A = 0.4V (Figure q 19 25 ns
a Logical "I" from CD to A Port M = 0, R5 = 5k, C4 = 30 pF
B PORT DATA/MODE SPECIFICATIONS
tpDHLa Propagation Delay to a Logical "0" from CD = 0.4V, T/A = 2.4V (Figure A)
A Porno B Port R1 = 1000, R2 = lk, C1 = 300 pF 18 23 ns
_ RI = 667tt, R2 = 5k, C1 == 45 pF 11 18 ns
tpDLHB Propagation Delay to a Logieal"1"from CD = 0.4V, T/A = 2.4V (FigureA)
A Portto B Port R1 = 1000, R2 = lk, C1 = 300 pF 16 23 ns
RI = 667n, R2 = 5k, C1 = 45 pF 11 18 ns
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AC Electrical Characteristics vcc = 5V,TA = 25°C (Continued)
Symbol Parameter Condltlons Mln Typ Max Units
B PORT DATA/MODE SPECIFICATIONS (Continued)
1;:ng Propagation DeIay from a Logical "0" to A0 to A7 = 0.4V, T/A = 2.4V (Figure q 13 18 n
TRI-STATE from CD to B Port S3 = 1, RS = lk, C4 = 15 pF S
tsza Propagation Delay from a Logical "I" to A0 to A7 = 2.4V, T/A- = 2.4V (Figure q a 1 5 ns
TRI-STATE from CDto B Port S3 = 0, R5 = 1k, C4 == 15 pF
thLg Propagation Delay from TRI-STATE to A0 to A7 = 0.4V, Tm = 2.4V (Figure q
a Logical "0" from CD to B Port S3 = 1, R5 = 1009, C4 = 300 pF 32 40 ns
S3 = 1, R5 = 6679,01 = 45 pF 16 22 ns
tPZHB Propagation Delay from TRI-STATE to A0 to A7 -- 2.4V, T/A' = 2.4V (Figure C)
a Logical "I" from CD to B Port 83 = 0, R5 = 1k, C4 = 300 pF 26 35 ns
S3 = 0,R5 = 5k, C4 = 45 pF 14 22 ns
TRANSMIT/RE EIVE MODE SPECIFICATIONS
tTRL Propagation Delay from Transmit Mode to CD = 0.4V (Figure B)
Receive a Logical "O'', T/A to A Port S1 = 0, R4 = 1000, C3 = 5 pF 30 40 ns
S2 =1.R3 =1k,C2 = 30pF
tTRH Propagation Delay from Transmit Mode to CD = 0.4V, (Figure 8)
mrcaimaLogieal"1",T/AtoA Port SI = 1, R4 = 1000, C3 = 5 pF 28 40 ns
S2 = 0,R3 = 5k,02 = 30pF
tnTH Propagation Dsslay from Receive Mode to CD = 0.4V (Figure B)
Transmita Logical "1", T/tl" to B Port SI = 0, R4 = 1k, C3 = 300 pF 28 40 ns
S2 =1,ns = 3000,02 --- 5pF
Nola t: “Absolute Maximum Ratings" are those values beyond which the saiety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables at "Electrical Characteristics" provide conditions for actual device operation.
Note 2: Unless otherwise specified, min/max limits apply across the supply and temperature range listed in the table of Recommended Operating Conditions. All
typical values given are for Vcc = 5V and TA = 2513.
Note 3: All currems into device pins are positive; all currents out of device pins are negative. M voltages are referenced to ground unless otherwise specified.
Note 4: Only one output ttt a time should be shorted.
Switching Time Waveforms and AC Test Circuits
INPUT tr tr =11 < Ions n
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anon" t.5tt 1.5V
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VCC Vcc
INPUT ounur
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Note: tM includes tastfixtum capacitance.
FIGURE A. Propagation Delay trom A Port to B Port or from B Port to A Port
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Switching Time Waveforms and AC Test Circuits (Continued)
tr tr = " C 10m _ tf
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1.5 It 1.5 v
Inn. --- rm -
8 PORT mm» A PORT mm
1.5 It 1.5 ll
TLAV8793-5
A PORT 3 PORT
vcc 4-0 'lilly Vcc
SENERATDR
. TLIF/87 -
Note: C2 and C3 include test fixture capacutance. 93 6
FIGURE B. Propagation Delay from rm to A Port or B Port
tr = tt < tilns tf
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0.4V 4 INPUT
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TEST cc
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GENERATOR
C4 Sg /tt,
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Note: G4 includes test fixture capacitance.
Port input is in a fixed logical
condition. See AC table.
FIGURE C. propagation Delay to/from TRl-STATE from CD to A Port or B Port
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This datasheet has been :
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Datasheets for electronic components.
National Semiconductor was acquired by Texas Instruments.
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This file is the datasheet for the following electronic components:
DP7304 - product/dp7304?HQS=T|-nu|I-nulI-dscatalog-df-pf-nuII-wwe
DP7304BJ - product/dp7304bj?HQS=Tl-nulI-nulI-dscatalog-df—pf—nuII-wwe
DP8304BJ - product/dp8304bj?HQS=T|-nulI-nulI—dscatalog-df—pf—nuII-wwe
DP8304BN - product/dp8304bn?HQS=T|-nu|I-nulI-dscatalog-df—pf—nuIl-wwe
