SCBS415 − APRIL 1987 − REVISED NOVEMBER 1993
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DW OR NT PACKAGE
(TOP VIEW)
State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015; Exceeds
200 V Using Machine Model (C = 200 pF,
R = 0)
Output Ports Have Equivalent 33-Ω Series
Resistors, So No External Resistors Are
Required
High-Impedance State During Power Up
and Power Down
3-State Outputs Drive Bus Lines or
Buffer-Memory Address Registers
Flow-Through Architecture Optimizes PCB
Layout
Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (NT)
OE1
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
VCC
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
OE2
description
This 10-bit buffer and bus/MOS driver provides a high-performance bus interface for wide data paths or buses
carrying parity.
The 3-state control gate is a 2-input AND gate with active-low inputs so that if either output-enable (OE1 or OE2)
input is high, all ten outputs are in the high-impedance state. The outputs are also in the high-impedance state
during power-up and power-down conditions. The outputs remain in the high-impedance state while the device
is powered down.
The outputs, which are designed to source or sink up to 12 mA, include 33-Ω series resistors to reduce overshoot
and undershoot.
The SN64BCT2827C is characterized for operation from − 40°C to 85°C and 0°C to 70°C.
FUNCTION TABLE
INPUTS
OE1
OE2
A
OUTPUT
Y
L
L
L
L
L
L
H
H
H
X
X
Z
X
H
X
Z
Copyright 1993, Texas Instruments Incorporated
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#".)(&' ("!"#$ &" '+*(!(%&"' +*# &0* &*#$' "! *1%' '&#)$*&'
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• DALLAS, TEXAS 75265
• HOUSTON, TEXAS 77251−1443
POST OFFICE BOX 655303
POST OFFICE BOX 1443
1
SCBS415 − APRIL 1987 − REVISED NOVEMBER 1993
logic symbol†
1
OE1
OE2
13
logic diagram (positive logic)
OE1
&
OE2
EN
1
13
2
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
2
3
23
1
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
23
A1
Y1
Y1
Y2
Y3
Y4
To Nine Other Channels
Y5
Y6
Y7
Y8
Y9
Y10
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
schematic of each output
VCC
Output
GND
2
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
SCBS415 − APRIL 1987 − REVISED NOVEMBER 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . −0.5 V to 5.5 V
Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA
Current into any output in the low state, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 mA
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† 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.
NOTE 1: The input negative-voltage rating may be exceeded if the input clamp-current rating is observed.
recommended operating conditions (see Note 2)
MIN
NOM
MAX
4.5
5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
IIK
Low-level input voltage
0.8
V
Input clamp current
−18
mA
IOH
IOL
High-level output current
−1
mA
Low-level output current
12
mA
∆t /∆VCC
Power-up ramp rate
High-level input voltage
2
V
µs / V
2
TA
Operating free-air temperature
NOTE 2: Unused or floating inputs must be held high or low.
V
−40
85
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
TEST CONDITIONS
MIN
TYP‡
MAX
UNIT
−1.2
V
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = −18 mA
IOH = − 1 mA
VOL
VCC = 4.5 V
IOL = 1 mA
IOL = 12 mA
II
IIH
VCC = 5.5 V,
VCC = 5.5 V,
VI = 7 V
VI = 2.7 V
0.1
20
µA
IIL
VCC = 5.5 V,
VCC = 0 to 2.3 V (power up)
VI = 0.5 V
−0.2
mA
IOZ
IOZH
IOZL
IOL(sink)
IO§
ICCL
ICCZ
Ci
VCC = 1.8 to 0 (power down)
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5 V,
VO = 2.7 or 0.5 V,
VCC −2
V
0.15
0.5
0.35
0.8
± 20
OE = 0.8 V
± 20
VO = 2.7 V
VO = 0.5 V
VO = 2 V
VO = 2.25 V
V
mA
µA
A
20
µA
−20
µA
50
mA
−30
−112
mA
Outputs open
28
40
mA
Outputs open
3.8
6
mA
VI = VCC or GND
VO = VCC or GND
5
pF
Co
VCC = 5 V,
8
pF
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ The output conditions have been chosen to produce a current that closely approximates one half ot the true short-circuit output current, IOS.
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POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
3
SCBS415 − APRIL 1987 − REVISED NOVEMBER 1993
switching characteristics over recommended range of supply voltage, CL = 50 pF (unless
otherwise noted) (see Note 3)
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A
Y
tPZH
tPZL
OE
Y
tPHZ
tPLZ
OE
Y
PARAMETER
TA = − 40°C
to 85°C
VCC = 5 V,
TA = 25°C
TYP
MAX
MIN
MAX
MIN
MAX
0.9
3.6
5.2
0.9
6.6
0.9
6
2
5.1
7.2
2
8.2
2
7.8
2.8
5.6
8
2.8
11.5
2.8
10.7
5
8.9
11
5
13.7
5
12.9
3.2
6.7
10.5
3.2
14
3.2
13
2.7
5.3
8.5
2.7
11
2.7
10
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POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
UNIT
MIN
NOTE 3: Load circuits and voltage waveforms are shown in Section 1.
4
TA = 0°C
to 70°C
ns
ns
ns
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