
N8T14, SN55122, SN75122
TRIPLE LINE RECEIVERS
SLLS075B – D1334, SEPTEMBER 1973 – REVISED FEBRUARY 1993
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
2–4
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC
High-level input voltage, VIH
Low-level input voltage, VIL
High-level output current, IOH
Low-level output current, IOL
4.75
5
5.25
V
A, B, R, or S
2
V
A, B, R, or S
0.8
V
μ
A
mA
–500
16
Operating free air temperature TA
Operating free-air temperature, TA
SN55122
SN75122
–55
125
70
°
C
0
electrical characteristics over recommended operating free-air temperature, V
CC
= 4.75 V to
5.25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C,
II = –12 mA
II = 10 mA
VIL = 0.8 V,
VI(B) = 0,
MIN
TYP
MAX
UNIT
Vhys
VIK
VI(BR)
Hysteresis (VT+ – VT–)
Input clamp voltage
R
VCC = 5 V,
VCC = 5 V,
VCC = 5 V,
VIH = 2 V,
VI(A) = 0,
VI(R) = 1.45 V, IOH = –500
μ
A, See Note 3
VIH = 2 V,
VIL = 0.8 V,
VI(A) = 0,
VI(B) = 0,
VI(R) = 1.45 V, IOL = 16 mA,
VI = 4.5 V
VI = 3.8 V
VI = 0.4 V,
VIR = 0.8 V
VCC = 5 V,
TA = 25
°
C
VCC = MAX,
All inputs at 0.8 V,
VCC = MAX,
All inputs at 2 V,
See Figures 2 and 4
0.3
0.6
V
A, B, or S
–1.5
V
Input breakdown voltage
A, B, or S
5.5
V
IOH = –500
μ
A
VI(S) = 2 V,
2.6
VOH
High-level output voltage
2.6
V
IOL = 16 mA
VI(S) = 2 V,
See Note 4
0.4
VOL
Low-level output voltage
0.4
V
IIH
High level input current
High-level input current
A, B, or S
40
μ
A
R
170
IIL
IOS
ICCH
ICCL
All typical values are at VCC = 5 V and TA = 25
°
C.
Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
NOTES: 3. The receiver input is high immediately before being reduced to 1.45 V.
4. The receiver input is low immediately before being increased to 1.45 V.
Low-level input current
A, B, or S
–0.1
–1.6
mA
Short-circuit output current
–50
–100
mA
High-level supply current
Outputs open
72
mA
Low-level supply current
Outputs open
100
mA
switching characteristics, V
CC
= 5 V, T
A
= 25
°
C
PARAMETER
TEST CONDITIONS
MIN
TYP
20
20
MAX
UNIT
tPLH
tPHL
Propagation delay time, low-to-high-level output from R input
Propagation delay time, high-to-low-level output from R input
See Figure 1
30
30
ns