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10-BIT BUFFERS/LINE DRIVERS (WITH 3-STATE OUTPUTS)
The MC54/74F827 and MC54/74F828 10-bit bus buffers provide high performance bus interface buffering for wide data/address paths or buses carrying parity. The 10-bit buffers have NOR output enables for maximum control flexibility. The F827 and F828 are functionally and pin compatible to AMD's 29827 and 29828. The F828 is an inverting version of the F827. * 3-State Outputs Drive Memory Address, Bus and Clock Lines * Outputs Sink 64 mA * 15 mA Source Current * Flow Through Pinout Architecture for Microprocessor Oriented Applications CONNECTION DIAGRAMS (TOP VIEW)
VCC O0 24 23 O1 22 O2 21 O3 20 O4 19 O5 18 O6 17 O7 16 O8 15 O9 OE2 14 13
24
MC54/74F827 MC54/74F828
10-BIT BUFFERS/LINE DRIVERS (WITH 3-STATE OUTPUTS)
FASTTM SCHOTTKY TTL
24 1
J SUFFIX CERAMIC CASE 758-01
1
N SUFFIX PLASTIC CASE 724-03
F827
1 OE1
2 D0
3 D1 O1 22
4 D2 O2 21
5 D3 O3 20
6 D4 O4 19
7 D5 O5 18
8 D6 O6 17
9 D7 O7 16
10 D8 O8 15
11 12 D9 GND O9 OE2 14 13
24 1
DW SUFFIX SOIC CASE 751E-03
VCC O0 24 23
ORDERING INFORMATION
MC54FXXXJ Ceramic MC74FXXXN Plastic MC74FXXXDW SOIC
F828
LOGIC SYMBOL
1 OE1 2 D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 D8 11 12 D9 GND 1 13
F827
234 56 7 8 9 10 11
LOGIC DIAGRAM
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 OE1 OE2 O0 O1 O2 O3 O4 O5 O6 O7 O8 O9 23 22 21 20 19 18 17 16 15 14
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
F828
234 56 OE1 OE2 O9 O8 O7 O6 O5 O4 O3 O2 O1 O0 1 13 7 8 9 10 11
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 OE1 OE2 O0 O1 O2 O3 O4 O5 O6 O7 O8 O9 23 22 21 20 19 18 17 16 15 14
FAST AND LS TTL DATA 4-261
MC54/74F827 * MC54/74F828
GUARANTEED OPERATING RANGES
Symbol VCC TA Supply Voltage* Operating Ambient Temperature Range Output Current -- High 74 54 IOL Output Current -- Low 74 -- -- -- -- -- -- -15 48 64 mA Parameter 54, 74 54 74 54 IOH Min 4.5 -55 0 -- Typ 5.0 25 25 -- Max 5.5 125 70 -12 mA Unit V C
FUNCTION TABLE
Inputs Outputs On OE L L H Dn H L X F827 H L Z F828 L H Z Function Transparent Transparent High Z
H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance
FAST AND LS TTL DATA 4-262
MC54/74F827 * MC54/74F828
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage 54 74 VOH Output HIGH Voltage 54, 74 74 54 VOL IOZH IOZL IIH IIL IOS ICCH Output LOW Voltage 74 Output Off Current HIGH Output Off Current LOW Input HIGH Current -- Input LOW Current Output Short Circuit Current (Note 2) Power Supply Current HIGH Power Supply Current LOW Power Supply Current OFF F828 -- -- 70 mA F827 F828 F827 F828 F827 ICCZ -- -100 -- -- -- -- -- -- -- -- -- -- -- -- -- 100 -20 -225 70 45 100 85 90 -- -- -- -- -- -- -- -- 0.55 50 -50 20 V A A A A A mA mA Outputs HIGH mA mA Outputs LOW mA mA Outputs OFF VCC = MAX VCC = MAX VCC = MAX 2.4 2.7 -- -- -- -- -- -- 0.55 V V V Min 2.0 -- -- 2.0 2.0 Typ -- -- -- -- -- Max -- 0.8 -1.2 -- -- Unit V V V V V Test Conditions Guaranteed Input HIGH Voltage Guaranteed Input LOW Voltage IIN = -18 mA IOH = -12 mA IOH = -15 mA IOH = -3.0 mA IOH = -3.0 mA IOL = 48 mA IOL = 64 mA VOUT = 2.7 V VOUT = 0.5 V VIN = 2.7 V VIN = 7.0 V VIN = 0.5 V VOUT = 0 V VCC = 4.75 V VCC = MIN VCC = MAX VCC = MAX VCC = 0 V VCC = MAX VCC = MAX VCC = MIN VCC = MIN
ICCL
NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type. 2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
54/74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tPLH tPHL tPZH tPZL tPHZ tPLZ Parameter Propagation Delay, Data to Output Output Enable Time F827 Min 2.0 2.0 3.5 4.0 2.0 Output Disable Time Propagation Delay, Data to Output Output Enable Time F828 1.5 2.0 1.0 3.5 4.0 2.0 Output Disable Time 1.5 Max 8.5 8.5 9.5 9.0 8.0 8.0 9.0 8.0 9.5 9.0 8.5 7.0 54F TA = - 55C to +125C VCC = 5.0 V 10% CL = 50 pF Min 2.0 2.0 3.5 4.0 2.0 1.5 2.0 1.0 3.5 4.0 2.0 1.5 Max 10 10 11 10.5 9.5 9.5 11 10 11 10.5 10 9.0 74F TA = 0C to 70C VCC = 5.0 V 10% CL = 50 pF Min 2.0 2.0 3.5 4.0 2.0 1.5 2.0 1.0 3.5 4.0 2.0 1.5 Max 9.0 9.0 10 9.5 8.5 8.5 10 9.0 10 9.5 9.0 8.0 ns ns ns ns ns ns Unit
FAST AND LS TTL DATA 4-263

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