TI TIL308

TIL308, TIL309
NUMERIC DISPLAYS WITH LOGIC
SLBS002–D1096, MARCH 1972–REVISED SEPTEMBER 1992
SOLID-STATE DISPLAYS WITH INTEGRAL TTL MSI CIRCUIT CHIP FOR USE
IN ALL SYSTEMS REQUIRING A DISPLAY OF BCD DATA
•
•
•
•
•
•
6,9-mm (0.270-Inch) Character Height
TIL308 Has Left Decimal
TIL309 Has Right Decimal
Easy System Interface
Wide Viewing Angle
Internal TTL MSI Chip With Latch, Decoder,
and Driver
Constant-Current Drive for Light-Emitting
Diodes
•
mechanical data
These assemblies consist of display chips and a TTL MSI chip mounted on a header with a red molded plastic
body. Multiple displays may be mounted on 11,43-mm (0.450-inch) centers.
PIN ASSIGNMENTS
Pin 1
Pn 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
QB
QC
QD
QA
LS
C
D
GND
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
NC
B
BI
DP
LT
QDP
A
VCC
3,56 (0.140)
2,79 (0.110)
Seating Plane
(see Note A)
4,32 (0.170) MIN
CL of Pin 1
4,42 (0.174)
3,81 (0.150)
0,56 (0.022)
0,46 (0.018)
DIA All Pins
7,87 (0.310)
7,62 (0.300)
1,52 (0.060)
1,02 (0.040)
Decimal Point
TIL309
CL of Pin 1
1
2,54 (0.100)
4,45 (0.175)
3,94 (0.155)
4 Places
6,45 (0.254)
10°
0,66 (0.026)
0,66 (0.026)
3,81 (0.150)
3,80 (0.150)
26,67 (1.050)
25,65 (1.010)
2,54 (0.100) T.P.
14 Places
(see Note C)
Logic Chip
Decimal Point
TIL308
TIL308
TIL309
A
F
G
E
TOP VIEW
D.P.
A
B
C
D
F
G
E
B
10,67 (0.420)
9,65 (0.380)
C
D
D.P.
ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
NOTES: A. Lead dimensions are not controlled above the seating plane.
B. Centerlines of character segments and decimal points are shown as dashed lines. Associated dimensions are nominal.
C. The true-position pin spacing is 2,54 mm (0.100 inch) between centerlines. Each centerline is located with 0,26 mm (0.010 inch) of
its true longitudinal position relative to pins 1 and 16.
Copyright  1992, Texas Instruments Incorporated
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
QDP QD QC QB QA
VCC
BI
LS
To Logic Chip
A
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
B
a
Latch
Data
Inputs
C
f
b
g
e
c
d
D
dp
DP
TL308 has left decimal.
TL309 has right decimal.
LT
TIL308, TIL309
NUMERIC DISPLAYS WITH LOGIC
Latch Outputs
SLBS002–D1096, MARCH 1972–REVISED SEPTEMBER 1992
2
logic diagram
TIL308, TIL309
NUMERIC DISPLAYS WITH LOGIC
SLBS002–D1096, MARCH 1972–REVISED SEPTEMBER 1992
description
These internally-driven seven-segment light-emitting-diode (LED) displays contain a five-bit latch and a
decoder/LED driver in a single 16-pin package. A description of the functions of the inputs and outputs of these
devices are in the terminal function table.
The TTL MSI circuits contain the equivalent of 78 gates on a single chip. Logic inputs and outputs are completely
TTL/DTL compatible. The buffered inputs are implemented with relatively large resistors in series with the bases
of the input transistors to lower drive-current requirements to one-half of that required for a standard Series
54/74 TTL input.
Some of the additional features of these displays are as follows:
•
•
•
•
•
•
•
•
•
Latched BCD and decimal point logic outputs provided to drive logic processors simultaneously with the
displayed data
Minimum number of inputs required . . . 4-line BCD plus decimal point
Overriding blanking for suppressing entire display or pulse-modulation of LED brightness
LED test input to simultaneously turn on all display segments and decimal point
Can be operated in a real-time mode or latched-update-only mode by use of the latch strobe input
Displays numbers 0 through 9 as well as A, C, E, F, or minus sign
Can be blanked by entry of BCD 13 or by use of the blanking input
Decimal point controlled independently with decimal-point latch
Constant-current-source TTL-LED interface for optimum performance.
The latch outputs except QDP are active pullup, and each one, except QDP, is capable of driving three standard
Series 54/74 loads. The LED driver outputs are designed specifically to maintain a relatively constant on-level
current of approximately 7 mA through each LED segment and decimal point. All inputs are diode-clamped to
minimize transmission-line effects, thereby simplifying system design. Power dissipation is typically 575 mW
with all segments on.
Terminal Functions
PIN
NAME
BLANKING Input (BI)
DESCRIPTION
NO.
11
When low, will blank (turn off) the entire display. Mus be high for normal operation of the display.
Latch Data Inputs
A, B, C, D, DP
15, 10, 6,
7, 12
Data on these inputs are entered into the latches under the control of the latch strobe input. The binary
weights of the inputs are: A = 1, B = 2, C = 4, D = 8. DP is decimal point latch data input.
Latch Outputs
QA, QB, QC, QD,
QDP
LATCH STROBE
Input (LS)
4, 1, 2, 3,
14
The BCD data that drives the decoder is stored in the five latches and is available at these outputs. The
binary weights of the outputs are: QA = 1, QB = 2, QC = 4, QD = 8. QDP is decimal point latch output.
LED TEST Input (LT)
5
When low, the data in latches follow the data on the latch inputs. When high, the data in the latches are held
constant and are unaffected by new data on the latch inputs.
13
When low, will turn on the entire display, overriding the data in the latches and the blanking input. Must be
high for normal operation of the display.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
TIL308, TIL309
NUMERIC DISPLAYS WITH LOGIC
SLBS002–D1096, MARCH 1972–REVISED SEPTEMBER 1992
FUNCTION TABLE
FUNCTION
LATCH INPUTS
B
A
LATCH OUTPUTS
DISPLAY
STROBE
BLANKING
INPUT
LED
TEST
QD
QC
QB
L
L
H
H
L
L
L
L
L
H
L
H
H
L
L
L
H
H
L
H
H
L
L
H
L
L
L
H
H
L
L
H
H
H
L
H
H
L
H
L
L
L
L
H
H
L
H
L
H
H
L
L
H
H
L
H
H
L
L
H
L
H
H
L
H
H
H
H
L
L
H
H
H
L
L
L
L
H
L
H
H
H
L
L
H
H
L
H
H
H
L
H
L
L
L
H
H
H
L
H
H
H
L
H
H
H
H
L
L
L
L
H
H
H
H
L
H
H
L
H
H
H
H
H
L
L
H
H
H
H
H
H
H
X
L
H
X
X
X
X
X
X
X
L
X
X
X
X
X
D
C
DP
0
L
L
L
L
1
L
L
L
H
2
L
L
H
L
L
3
L
L
H
H
H
4
L
H
L
L
L
5
L
H
L
H
H
6
L
H
H
L
7
L
H
H
H
8
H
L
L
L
9
H
L
L
H
A
H
L
H
L
L
Minus Sign
H
L
H
H
H
C
H
H
L
L
L
Blank
H
H
L
H
H
E
H
H
H
L
L
F
H
H
H
H
H
L
Blank
X
X
X
X
X
LED TEST (LT)
X
X
X
X
X
QA
QDP
TIL308
TIL309
H = high level, L = low level, X = irrelevant.
DP input has arbitrarily been shown activated (high) on every other line of the table.
absolute maximum ratings over operating case temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1): Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Nonrepetitive peak, tw ≤ 100 ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating case temperature range, TC (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 25°C to 85°C
NOTES: 1. Voltage values are with respect to network ground terminal.
2. Case temperature is the surface temperature of the plastic measured directly over the integrated circuit. Forced-air cooling may be
required to maintain this temperature.
recommended operating conditions
Supply voltage, VCC
Low logic level
Normalilzed fanout from each output,, N
(to Series 54/74 integrated circuits)
High logic level
NOM
MAX
UNIT
5
5.25
V
QDP
1
QA, QB, QC, QD
3
QDP
3
QA, QB, QC, QD
6
Latch strobe pulse duration, tw
Setup time, tsu
Latch data input (DP) before latch strobe (LS)↑
Hold time, th
Latch data input (DP) after latch strobe (LS)↑
Operating case temperature, TC
4
MIN
4.75
45
ns
60
ns
0
0
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
ns
70
°C
TIL308, TIL309
NUMERIC DISPLAYS WITH LOGIC
SLBS002–D1096, MARCH 1972–REVISED SEPTEMBER 1992
electrical characteristics at 25°C case temperature
PARAMETER
VIH
VIL
High-level input voltage
VIK
Input clamp voltage
VOH
High level output voltage
High-level
VOL
Low-level output voltage
g
(see Note 3)
TEST CONDITIONS
MIN
TYP†
QDP
QA, QB, QC, QD
QDP
QA, QB, QC, QD
II
IIH
Input current at maximum input voltage
IIL
Low-level input current
High-level input current
Short circuit output current
Short-circuit
ICC
Supply current
QA, QB, QC, QD
VCC = 4.75 V,
VCC = 4.75 V,
II = – 12 mA
IOH = – 120 µA
VCC = 4.75 V,
VCC = 4.75 V,
IOH = – 240 µA
IOL = 1.6 mA
VCC = 4.75 V,
VCC = 5.25 V,
IOL = 4.8 mA
VI = 5.5 V
VCC = 5.25 V,
VCC = 5.25 V,
VI = 2.4 V
VI = 0.4 V
VCC = 5
5.25
25 V
QDP
VCC = 5.25 V,
Iv
Luminous intensity (see Note 4)
λp
Wavelength at peak emission
Figure
VCC = 5 V
DP Input
VCC = 5 V,
0.8
V
– 1.5
V
24
2.4
V
04
0.4
1
mA
µA
– 0.8
mA
– 27.5
–1
– 3.2
115
700
1200
40
70
See Note 5
V
20
–9
All inputs at 0 V
UNIT
V
Low-level input voltage
IOS
MAX
2
180
mA
mA
µcd
660
nm
∆λ
Spectral bandwidth
VCC = 5 V,
See Note 5
20
nm
† All typical values are at VCC = 5 V.
NOTES: 3. This parameter is measured with the display blanked.
4. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (International Commission on
Illumination) eye-response curve.
5. These parameters are measured with all LED segments and the decimal point on.
switching characteristics, VCC = 5 V, TC = 25°C
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A B,
A,
B C,
C D,
D DP
QA, QB, QC, QD, QDP
TEST CONDITIONS
CL = 15 pF,,
See Figure 1
RL = 1.2 kΩ,,
MIN
TYP
35
40
MAX
UNIT
ns
PARAMETER MEASUREMENT INFORMATION
Output
VCC
RL
From Output
Under Test
CL = 15 pF
NOTES: A. CL includes probe and jig capacitance.
B. All diodes are 1N3064.
C. Measurements mode with LS input grounded.
Figure 1. Load Circuit
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
TIL308, TIL309
NUMERIC DISPLAYS WITH LOGIC
SLBS002–D1096, MARCH 1972–REVISED SEPTEMBER 1992
TYPICAL CHARACTERISTICS
RELATIVE LUMINOUS INTENSITY
vs
CASE TEMPERATURE
RELATIVE SPECTRAL CHARACTERISTICS
0.9
Luminous Intensity Relative to Value at TC = 25 °C
1
VCC = 5 V
TC = 25°C
Relative Luminous Intensity
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
600
620
640
660
680
700
4
VCC = 5 V
2
1
0.7
0.4
0.2
0.1
0
Figure 2
6
10
20
30
40
50
TC – Case Temperature – °C
λ – Wavelength – nm
Figure 3
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
60
70
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Copyright  1996, Texas Instruments Incorporated